JP2011248005A - Stereoscopic image presentation system, observation equipment, stereoscopic image supply equipment, delay time calculation method, program, and recording media - Google Patents

Abstract

The present invention provides a stereoscopic video presentation system that allows an observer to observe a beautiful stereoscopic video.
A stereoscopic video presentation system 100 includes a stereoscopic video supply device 200 and an observation device 300. In the inspection mode, the observation device 300 switches the shutter that is opened corresponding to the inspection image supplied from the stereoscopic video supply device 200 at an interval shorter than the inspection image supply time. Based on the shutter opening timing when the brightness detected by the control unit 310 and the sensor unit 340 exceeds a predetermined threshold, the shutter after the inspection image is supplied from the stereoscopic video supply device 200 to the display device 500 Is provided with a delay time calculation unit 350 for calculating a delay time until opening the.
[Selection] Figure 1

Description

  The present invention provides a stereoscopic video supply device that alternately supplies a right-eye image and a left-eye image to a display device, and a right-eye shutter and a left-eye shutter that are alternately opened and closed in synchronization with image switching from the stereoscopic video supply device. The present invention relates to a stereoscopic image presentation system including an observation device.

  Until now, in order to enjoy 3D video (3D video) content, it has been necessary to view 3D video content supported by the viewing environment in a limited viewing environment such as a movie theater. In recent years, standardization for 3D video content has been promoted in Blu-ray Disc (BD), and an environment in which a user can view 3D video content relatively easily has been established.

  Stereoscopic vision can be realized by presenting an image having parallax to the left and right eyes of the user. Until now, many methods for presenting an image having parallax to the left and right eyes of the user have been proposed. One of them is a method of showing a 3D image to a user by observing an image displayed by a time division transmission method (frame sequential method) with glasses having a shutter function.

  In a system that employs a frame sequential method, the display device alternately displays a frame image for the left eye, a frame image for the right eye, a frame image for the left eye, a frame image for the right eye, and so on along the time axis. indicate. The observation glasses present separate images to the left and right eyes of the user by opening and closing shutters provided in the two windows of the glasses in synchronization with switching of images displayed on the display device.

  In Patent Document 1, the left image and the right image are alternately displayed, the left shutter is opened while the left image is displayed, and the right image is displayed while the right image is displayed. A stereoscopic display device that presents a stereoscopic video to a viewer by opening the shutter is disclosed.

Japanese Unexamined Patent Publication No. 63-214096 (published September 6, 1988)

  A stereoscopic video supply device that supplies an image for showing a 3D video to a user to a display device is switched between a right eye shutter and a left eye shutter in observation glasses in synchronization with switching of a right eye image and a left eye image to the display device. Need to control.

  However, there is a time lag from when the stereoscopic video supply device supplies the right-eye image or the left-eye image to the display device until the image is clearly displayed on the display device. Similarly, there is a time lag between when the stereoscopic video supply device instructs the observation glasses to switch between the right eye shutter and the left eye shutter and when the shutter is actually opened and closed.

  Therefore, for example, when the stereoscopic video supply device instructs the display device to display the right-eye image, and simultaneously instructs the observation glasses to open the right-eye shutter, the right-eye image is displayed on the display device and the right-eye image is displayed simultaneously. The shutter is not always opened. The same applies to the left-eye image and the left-eye shutter.

  In this way, when the display of the right eye image and the release of the right eye shutter are not synchronized, the left eye image is observed while the user observes the image with the right eye, and thus crosstalk occurs. It will be. When crosstalk occurs, there is a problem that the user cannot observe beautiful stereoscopic images.

  The present invention has been made in view of the above problems, and a main object thereof is to provide a stereoscopic video presentation system that allows an observer to observe a beautiful stereoscopic video.

In the stereoscopic video presentation system according to the present invention, in order to solve the above problems,
A stereoscopic video supply device that alternately supplies a right-eye image to be observed by the observer's right eye and a left-eye image to be observed by the observer's left eye to the display device, and an observation device that observes the display device. A stereoscopic video presentation system comprising: an observation device that alternately opens and closes a right-eye shutter and a left-eye shutter in synchronization with switching of an image supplied from the stereoscopic video supply device;
The stereoscopic video supply device includes image supply means for supplying an inspection image to a display device when the stereoscopic video presentation system is operated as an inspection mode.
When the observation apparatus operates with the operation mode of the stereoscopic image presentation system as an inspection mode, a shutter that is opened corresponding to the inspection image supplied from the image supply unit is opened as one inspection image. Is provided with shutter opening / closing control means for opening and closing at intervals shorter than the time when
Either the stereoscopic image supply device or the observation device inspects the display device from the stereoscopic image supply device based on the brightness of the display device detected at each timing when the shutter is opened in the inspection mode. The apparatus is characterized by comprising delay time calculation means for calculating a delay time from when the working image is supplied to when the shutter is opened.

  The stereoscopic video supply device constituting the stereoscopic video presentation system according to the present invention supplies an inspection image constituting the stereoscopic video content for inspection to the display device when the operation mode is the inspection mode. When the operation mode is the inspection mode, the observation device that configures the stereoscopic video presentation system has a single shutter image that is opened corresponding to the inspection image supplied from the stereoscopic video supply device. Open and close at shorter intervals than the supplied time. In either of the stereoscopic image supply device and the observation device, the inspection image is supplied from the stereoscopic image supply device to the display device based on the brightness of the display device detected at each timing when the shutter is opened in the inspection mode. After that, the delay time from when the shutter is opened is calculated.

  Therefore, in the stereoscopic video presentation system according to the present invention, the stereoscopic vision is provided to the observer by delaying the time from when the image is supplied from the stereoscopic video supply device to the display device until the shutter is opened. It is possible to observe an image in a suitable state. That is, it is possible to accurately synchronize the image with respect to the display device and the opening of the shutter opened corresponding to the image.

  Thus, in the stereoscopic video presentation system according to the present invention, it is possible to prevent a beautiful stereoscopic view from being hindered by the occurrence of crosstalk, so that the observer can observe a beautiful stereoscopic video. .

  In the stereoscopic video presentation system according to the present invention, the stereoscopic video supply device further performs inspection by superimposing a test pattern image on a part of the image when the operation mode of the stereoscopic video presentation system is the inspection mode. It is preferable that the apparatus further includes content creation means for creating a stereoscopic video content, and the light detector detects the brightness of the area where the inspection pattern image is displayed on the display device.

  According to said structure, the area | region which detects a brightness in a photodetector can be made into only the area | region where the test | inspection pattern image is displayed.

  As a result, it is possible to reduce the area in which the brightness is detected in the light detector, so that even if the display device is large, it is less likely to be affected by outside light, and the brightness can be detected accurately. There is an effect that can be done.

  In the three-dimensional image presentation system according to the present invention, the delay time calculation unit further includes a shutter opening time from when the shutter is opened until the shutter is closed based on frequency information when the brightness measured by the sensor falls below a threshold value. Is preferably calculated.

  According to the above configuration, it is possible to prevent an image that is no longer suitable for stereoscopic viewing by an observer from being observed.

  As a result, the user can observe even more beautiful stereoscopic images.

  In the stereoscopic video presentation system according to the present invention, any one of the stereoscopic video supply device and the observation device may perform the above in the appreciation mode based on the delay time calculated by the delay time calculation unit in the inspection mode. You may provide the shutter control means which controls the timing which opens a shutter. Alternatively, the stereoscopic video supply device controls the timing for supplying the right-eye image and the left-eye image to the display device based on the delay time calculated by the delay time calculation means in the inspection mode. It may be.

In order to solve the above problems, an observation apparatus according to the present invention provides
An observation device for observing a display device that alternately displays a right-eye image to be observed by an observer's right eye and a left-eye image to be observed by an observer's left eye, the image being supplied to the display device In the observation device that opens and closes the shutter for the right eye and the shutter for the left eye alternately in synchronization with
When the operation mode of the observation apparatus is the inspection mode, the shutter opened corresponding to the inspection image supplied to the display device is shorter than the time during which one inspection image is supplied. Shutter opening and closing means for opening and closing at intervals;
A delay time calculating means for calculating a delay time from when the inspection image is supplied to the display device until the shutter is opened based on the brightness of the display device detected at each timing of opening the shutter;
It is characterized by having.

  According to said structure, there exists an effect similar to the three-dimensional image presentation system which concerns on this invention.

In order to solve the above problems, a stereoscopic video supply device according to the present invention provides:
A stereoscopic video supply device that alternately supplies a right eye image to be observed by an observer's right eye and a left eye image to be observed by an observer's left eye to a display device,
When the operation mode of the stereoscopic video supply device is an inspection mode, an image supply means for supplying an image for inspection to the display device;
Synchronously with the switching of the image supplied from the stereoscopic video supply device, the observation device of the display device that alternately opens and closes the right-eye shutter and the left-eye shutter, and when the observation device is in the inspection mode, Timing acquisition means for acquiring the timing for opening the shutter from an observation device capable of opening and closing the shutter at intervals shorter than the time during which one inspection image is supplied;
A delay time calculating means for calculating a delay time from when the image for inspection is supplied to the display device until the shutter is opened based on the brightness of the display device detected at each timing acquired by the timing acquisition means; ,
It is characterized by having.

  According to said structure, there exists an effect similar to the three-dimensional image presentation system which concerns on this invention.

In order to solve the above problem, the delay time calculation method according to the present invention provides:
A stereoscopic video supply device that alternately supplies a right-eye image to be observed by the observer's right eye and a left-eye image to be observed by the observer's left eye to the display device, and an observation device that observes the display device. A delay time calculation method in a stereoscopic video presentation system comprising: an observation device that alternately opens and closes a right-eye shutter and a left-eye shutter in synchronization with switching of an image supplied from the stereoscopic video supply device. ,
The stereoscopic video supply device, when the operation mode of the stereoscopic video presentation system is an inspection mode, an image supply step of supplying an image for inspection to a display device;
A shutter opening / closing control step for opening / closing a shutter opened corresponding to the inspection image supplied in the image supply step at an interval shorter than the time during which one inspection image is supplied;
A delay time for calculating a delay time from when the inspection image is supplied from the stereoscopic image supply device to the display device until the shutter is opened based on the brightness of the display device detected at each timing of opening the shutter A calculation step;
It is characterized by including.

  According to said structure, there exists an effect similar to the three-dimensional image presentation system which concerns on this invention.

  Further, a program for operating the observation apparatus or the stereoscopic video supply apparatus according to the present invention, which is a program that causes a computer to function as each of the above-described means, and a computer-readable program that records the program Recording media are also included in the scope of the present invention.

  The stereoscopic video supply device constituting the stereoscopic video presentation system according to the present invention supplies an inspection image constituting the stereoscopic video content for inspection to the display device when the operation mode is the inspection mode. When the operation mode is the inspection mode, the observation device that configures the stereoscopic video presentation system has a single shutter image that is opened corresponding to the inspection image supplied from the stereoscopic video supply device. Open and close at shorter intervals than the supplied time. In either of the stereoscopic image supply device and the observation device, the inspection image is supplied from the stereoscopic image supply device to the display device based on the brightness of the display device detected at each timing when the shutter is opened in the inspection mode. After that, the delay time from when the shutter is opened is calculated.

  As a result, it is possible to accurately synchronize the image with respect to the display device and the opening of the shutter opened corresponding to the image.

  Therefore, in the stereoscopic video presentation system according to the present invention, it is possible to prevent a beautiful stereoscopic view from being hindered due to the occurrence of crosstalk, so that an observer can observe a beautiful stereoscopic video.

It is a block diagram which shows the structure of the stereo image presentation system which concerns on this invention. It is a block diagram which shows the structure of the modification of the three-dimensional video presentation system which concerns on this invention. It is a flowchart which shows the process at the time of the test | inspection mode in the stereoscopic video supply apparatus which comprises the stereoscopic video presentation system which concerns on this invention. It is a flowchart which shows the process at the time of the test | inspection mode in the observation apparatus which comprises the three-dimensional image presentation system which concerns on this invention. It is a figure which shows the calculation method of the delay time in the stereo image presentation system which concerns on this invention.

  An embodiment of a stereoscopic video presentation system according to the present invention will be described below with reference to FIGS. 1 to 4 by taking 3D video content by a frame sequential method as an example.

(Configuration of 3D video presentation system 100)
First, the main configuration of the 3D video presentation system (stereoscopic video presentation system) according to the present invention will be described below with reference to FIG. FIG. 1 is a block diagram illustrating a main configuration of the 3D video presentation system 100.

  As shown in FIG. 1, the 3D video presentation system 100 includes a stereoscopic video supply device 200 and an observation device 300. Here, the display device 500 shown in FIG. 1 is not a member constituting the 3D video presentation system 100, but is shown in FIG. 1 for convenience in order to facilitate understanding of the present invention.

  The 3D video presentation system 100 has at least two modes, that is, a content viewing mode and an inspection mode, as operation modes. The details of each operation mode will be described below, and the description thereof is omitted here. The stereoscopic image supply device 200 and the observation device 300 will be described in detail below.

(Stereoscopic image supply apparatus 200)
The stereoscopic video supply device 200 supplies 3D video content to the display device 500. The stereoscopic video supply device 200 supplies 3D video content to the display device 500 by a frame sequential method. That is, the stereoscopic video supply apparatus 200 includes a frame image that the user should observe with the right eye (a frame image for the right eye) and a frame image that the user should observe with the left eye (the frame image for the left eye) among the frame images constituting the 3D video content. Are alternately supplied to the display device 500.

  The stereoscopic video supply device 200 is connected to the display device 500 via a recording medium (for example, a hard disk or a flash memory), an optical disk (for example, a BD), or a network (for example, the Internet) connected to the own device. Acquire 3D video content to be supplied.

  As shown in FIG. 1, the stereoscopic video supply apparatus 200 includes an inspection content creation unit 210, an image supply unit 220, a shutter switching instruction unit 230, and a storage unit 240. Each of these members will be described below.

(Inspection content creation unit 210)
The inspection content creation unit 210 creates inspection 3D video content when the operation mode of the stereoscopic video supply device 200 is the inspection mode.

  For example, the inspection content creation unit 210 creates the inspection 3D video content by superimposing the inspection pattern image on the prerecorded 3D video content.

(Image supply unit 220)
The image supply unit 220 supplies a frame image to the display device 500.

  For example, when the 3D video presentation system 100 is in the content viewing mode, the right-eye frame image and the left-eye frame image in the acquired 3D video content are supplied to the display device 500 alternately. When the 3D video presentation system 100 is in the examination mode, the examination frame image in the examination 3D video content created by the examination content creation unit 210 is supplied to the display device 500.

(Shutter switching instruction unit 230)
The shutter switching instruction unit 230 instructs opening / closing of the shutter in the observation apparatus 300 in synchronization with the supply of the frame image in the image supply unit 220.

  More specifically, when the image supply unit 220 supplies the right-eye frame image to the display device 500, the shutter switching instruction unit 230 instructs the observation device 300 to open the right-eye shutter and close the left-eye shutter. To do. Conversely, when the image supply unit 220 supplies the left-eye frame image to the display device 500, the shutter switching instruction unit 230 instructs the observation device 300 to open the left-eye shutter and close the right-eye shutter.

(Storage unit 240)
The storage unit 240 stores the shutter opening delay time calculated by the observation apparatus 300.

(Observation device 300)
The observation device 300 is a device for observing the display device 500, and is worn on the head by a user who observes 3D video content.

  The observation device 300 may be 3D glasses, or a head mounted display (HMD) in which the display device 500 is integrated with the observation device 300.

  As shown in FIG. 1, the observation apparatus 300 includes a shutter switching control unit 310, a right eye shutter 320, a left eye shutter 330, a sensor unit 340, and a delay time calculation unit 350. Each of these members will be described below.

(Shutter switching control unit 310)
The shutter switching control unit 310 controls opening and closing of the right eye shutter 320 and the left eye shutter 330 provided in the observation apparatus 300 in accordance with an instruction from the shutter switching instruction unit 230.

  When the 3D video presentation system 100 is in the inspection mode, the shutter switching control unit 310 opens and closes the shutter in the right-eye shutter 320 or the left-eye shutter 330 faster than the source frame rate. That is, when the inspection frame image supplied from the image supply unit 220 is for the right eye, the right eye shutter 320 is switched a plurality of times while supplying one frame of the inspection frame image. The same applies when an inspection frame image for the left eye is supplied.

(Right eye shutter 320, left eye shutter 330)
The right-eye shutter 320 is provided in the right-eye observation unit that covers the right eye of the user wearing the observation device 300. When the right eye shutter 320 is closed, the user cannot observe the image displayed on the display device 500 with the right eye, and when the right eye shutter 320 is opened, the user displays the image displayed on the display device 500 with the right eye. Can be observed.

  Similarly, the left-eye shutter 330 is provided in the left-eye observation unit that covers the left eye of the user wearing the observation device 300. When the left eye shutter 330 is closed, the user cannot observe the image displayed on the display device 500 with the left eye, and when the left eye shutter 330 is opened, the user displays the image displayed on the display device 500 with the left eye. Can be observed.

  Examples of the right eye shutter 320 and the left eye shutter 330 include a liquid crystal shutter. Of course, in addition to the liquid crystal shutter, a mechanical shutter such as a blind may be used.

(Sensor unit 340)
The sensor unit 340 is a sensor that detects the brightness (illuminance) of an image displayed on the display device 500. That is, the sensor unit 340 detects the amount of light emitted from the display panel of the display device 500 when the inspection frame image is displayed.

  In the present embodiment, the case where the sensor unit 340 is provided in the observation apparatus 300 is described as an example, but the present invention is not limited to this. The sensor unit 340 may be a separate device from the observation device 300 or may be provided in the stereoscopic video supply device 200.

  However, information regarding the illuminance detected by the sensor unit 340 is output to the delay time calculation unit 350 regardless of which device the sensor unit 340 is provided with.

(Delay time calculation unit 350)
The delay time calculation unit 350 opens and closes the shutter after the frame image is supplied from the image supply unit 220 based on the opening timing when the shutter switching control unit 310 opens the shutter and the illuminance detected by the sensor unit 340. Calculate the delay time until execution.

  Since the detailed calculation method of the delay time in the delay time calculation unit 350 will be described in detail below, the description thereof is omitted here.

(Display device 500)
The display device 500 is a display device that can display 3D video content. The display device 500 may be a liquid crystal display device or an organic EL display device.

(Operation in Inspection Mode of 3D Video Presentation System 100)
Next, the operation when the operation mode of the 3D video presentation system 100 is the inspection mode will be described below.

  In this specification and the like, the “inspection mode” refers to a point in the 3D video presentation system 100 when the supply of the frame image from the image supply unit 22 to the display device 500 is switched from the right eye to the left eye, or from the left eye to the right eye. To the time (delay time) until the shutter that is opened corresponding to the switched frame image is actually opened.

  The 3D video presentation system 100 can switch between the inspection mode and the content viewing mode using a switch provided in the stereoscopic video supply device 200, for example. At this time, it is only necessary to transmit to the observation device 300 which mode the stereoscopic image supply device 200 operates in.

  When the 3D video presentation system 100 operates in the inspection mode, the inspection content creation unit 210 in the stereoscopic video supply device 200 creates inspection content.

  The image supply unit 220 supplies an inspection frame image that constitutes the inspection content created by the inspection content creation unit 210 to the display device 500.

  At this time, the inspection content may be configured such that the right-eye frame image and the left-eye frame image are alternately supplied in the same manner as the 3D video content, or only one frame image is supplied. It may be configured. When only one frame image is supplied, the black image may be supplied at the timing when the other frame image is supplied.

  When an inspection frame image for the right eye is supplied from the image supply unit 220, the shutter switching control unit 230 instructs the observation apparatus 300 to open the right eye shutter 320.

  The shutter switching control unit 310 in the observation apparatus 300 that has received the instruction opens and closes the shutter that has been instructed to open a plurality of times when the observation apparatus 300 is operating in the inspection mode. For example, when the shutter switching control unit 310 receives an instruction to open the right eye shutter 320, the right eye shutter is moved a plurality of times (preferably 10 to 100 while an inspection frame image for the right eye is supplied from the image supply unit 220. Open and close). That is, the shutter switching control unit 310 opens and closes the shutter at a speed faster than the frame rate of the video content as the source.

  The delay time calculation unit 350 acquires release timing information indicating the number of times the shutter is opened (or closed) in the shutter switching control unit 310. Then, the delay time calculation unit 350 calculates the delay time based on the opening timing information when the illuminance of light emitted from the display device 500 in the sensor unit 340 exceeds a predetermined threshold.

  Here, the case where the illuminance of light emitted from the display device 500 in the sensor unit 340 exceeds a predetermined threshold means that the frame image displayed on the display device 500 (the frame supplied to the display device 500 in the image supply unit 220). Image) is displayed in a state that is easy for the user to observe. That is, the frame image at this time is an image in a state where a stereoscopic view can be clearly obtained during observation.

  The delay time calculation unit 350 records the calculated delay time in the storage unit 240 in the stereoscopic video supply device 200. At this time, the delay time calculation unit 350 may record the calculated delay time in the storage unit 240 in association with identification information that allows the observation apparatus 300 to be distinguished from other observation apparatuses. Thereby, even if the observation device attached to the stereoscopic image supply device 200 is changed, the delay time corresponding to the observation device attached can be used.

(Details of delay time calculation method)
A method for calculating the delay time in the delay time calculation unit 350 will be described with reference to FIG. FIG. 5 shows a delay time when the frame rate of the inspection content is 60 fps (60 frame images are displayed per second) and the shutter is opened 10 times per frame (closed 10 times). It is explanatory drawing which shows the calculation method of.

  As shown in FIG. 5A, when the shutter is opened for the fourth time, the illuminance measured by the sensor unit 340 exceeds a predetermined threshold (the frame image is supplied to the display device 500 from the right eye to the left eye, Alternatively, the shutter release immediately after switching from the left eye to the right eye is counted as the first shutter release). That is, it is assumed that the release timing information is “4”. In this case, the shutter may be set to be released after 3/600 seconds (= 1/200 seconds) from the time when the supply of the frame image to the display device is switched from the right eye to the left eye, or from the left eye to the right eye. It will be. Therefore, in the above example, the delay time calculation unit 350 sets the delay time to 1/200 second.

  In the present embodiment, the time from when the instruction is received from the shutter switching instruction unit 230 until the shutter is actually opened or until it is closed (Δ second in FIG. 5B) is not considered. Of course, this time may be taken into account. In this case, the delay time calculation unit 350 calculates the time until the shutter is actually opened or closed (Δ in FIG. 5B) as the calculated delay time (3/600 + Δ in FIG. 5B). A value subtracted from (second) (3/600 seconds in FIG. 5B) may be calculated as the delay time. However, this correction may be omitted if the delay time is calculated while allowing an error of the shutter opening period (1/600 seconds in the above example) or less.

  In the present embodiment, the case where the delay time is calculated based on the timing when the brightness of the display device 500 exceeds a predetermined threshold has been described as an example, but the present invention is not limited to this. For example, the delay time may be calculated based on the timing when the brightness of the display device 500 becomes maximum.

  In the present embodiment, the case where the delay time is calculated based on the brightness at one place is described as an example, but the present invention is not limited to this. That is, after calculating the delay time based on each of the brightness at a plurality of locations, the average of these may be taken as the delay time. By performing such statistical processing, the influence of optical noise can be reduced. Cases where optical noise is generated include cases where light from outside the display device, such as illumination and external light, is detected, and light from locations other than the location where the inspection pattern is displayed wraps around. The case where it will be detected is mentioned.

  In this embodiment, as described below, a configuration is adopted in which delay compensation is performed by controlling the shutter opening timing in the content viewing mode based on the delay time calculated by the delay time calculation unit 350. However, the present invention is not limited to this. That is, based on the delay time calculated by the delay time calculation unit 350, the image supply unit 220 controls the timing for supplying the right-eye frame image and the left-eye frame image to the display device 500, thereby compensating for delay. You may employ | adopt the structure to do.

(Operation in the content viewing mode of the 3D video presentation system 100)
Next, the operation when the 3D video presentation system 100 is in the content viewing mode will be briefly described below.

  The “content appreciation mode” in this specification and the like is a mode for the user to view 3D video content. The operation mode switching is as described above.

  When the observation device 300 is attached to the stereoscopic video supply device 200, the stereoscopic video supply device 200 determines whether or not the delay time in the attached observation device 300 is recorded in the storage unit 240. When the delay time is recorded, the stereoscopic video supply device 200 outputs a shutter switching instruction in consideration of the recorded delay time. When the delay time is not recorded, the delay time is not considered.

  When the stereoscopic video supply device 200 acquires 3D video content, the image supply unit 220 alternately supplies the right-eye frame image and the left-eye frame image constituting the 3D video content to the display device 500. The 3D video content is created in advance so that the left-eye frame image and the right-eye frame image are alternately supplied along the time axis.

  The image supply unit 220 instructs the shutter switching instruction unit 230 to open and close the shutter simultaneously with the supply of the frame image. For example, when supplying the right-eye frame image, the image supply unit 220 instructs the shutter switching instruction unit 230 to output an instruction to open the right-eye shutter to the observation unit 300.

  Upon receiving the instruction, the shutter switching control unit 230 delays the time from receiving the instruction from the image supply unit 220 to sending the instruction to the observation apparatus 300 by the delay time recorded in the storage unit 240. When the delay time recorded in the storage unit 240 has elapsed, the shutter switching instruction unit 230 outputs a shutter opening / closing instruction to the observation device 300.

  Upon receiving the shutter opening / closing instruction, the shutter switching control unit 310 in the observation apparatus 300 opens / closes the right eye shutter 320 and the left eye shutter 330 based on the received instruction. For example, when an instruction to open the right eye shutter 320 is received, the shutter switching control unit 310 controls the shutter so that the right eye shutter 320 is opened and the left eye shutter 330 is closed. Conversely, when receiving an instruction to open the left eye shutter 330, the shutter switching control unit 310 controls the shutter so that the left eye shutter 330 is opened and the right eye shutter 330 is closed.

  In the above description, the case where an instruction to open the right eye shutter or the left eye shutter is transmitted from the shutter switching instruction unit 230 to the observation apparatus 300 is described as an example. Of course, the instruction to close the right eye shutter or the left eye shutter is used. Even if there is, it is the same.

(Function and effect)
As described above, in the 3D video presentation system 100, the time from when the shutter switching instruction unit 230 receives the shutter switching instruction in the observation apparatus 300 to when the shutter switching instruction is output to the observation apparatus 300 is delayed. Let At this time, the time to be delayed (delay time) is equal to the time until the frame image supplied from the image supply unit 220 is in a suitable state in which stereoscopic display can be obtained in the display device 500.

  Therefore, by delaying the time for outputting the shutter switching instruction, the user can observe the frame image displayed in a suitable state in which stereoscopic viewing can be obtained on the display device 500. That is, the 3D video presentation system 100 synchronizes the display of the frame image and the switching of the shutter with high accuracy.

  As a result, the 3D video presentation system 100 allows the user to observe a beautiful stereoscopic video with little crosstalk.

(Inspection frame image)
The inspection frame image in the present embodiment is not particularly limited as long as the sensor frame 340 can detect the illuminance. The entire image may be an inspection frame image, or an inspection frame image may be formed by superimposing an inspection pattern on a part of a normal frame image.

  By superimposing the inspection pattern on a part of the frame image, the area to be detected by the sensor unit 340 can be reduced. For example, in the large display device 500, it is extremely difficult to accurately detect the entire illuminance due to the influence of external light and the like. Therefore, the detection accuracy of the sensor unit 340 can be improved by detecting the illuminance of the region of the inspection pattern displayed superimposed on a part of the frame image.

  The shape of the inspection pattern may be a rectangle, a circle, or another polygon. The pattern of the test pattern may be striped (vertical striped, horizontal striped, diagonal striped), latticed, or plain.

(Shutter opening time setting)
The delay time calculation unit 350 is further supplied with the frame image from the image supply unit 220 based on the opening timing information that the shutter is opened from the shutter switching control unit 310 and the illuminance detected by the sensor unit 340. Alternatively, the delay time from when the shutter is released to when the shutter is released may be calculated.

  More specifically, the delay time calculation unit 350 ends the execution of opening the shutter based on the release timing information when the illuminance of light emitted from the display device 500 in the sensor unit 340 falls below a predetermined threshold. Calculate the time until.

  For example, similarly to the above, it is assumed that the frame rate of the inspection content is 60 fps (60 frame images are displayed per second), and the shutter is opened 10 times per frame (closed 10 times). . At this time, when the release timing information when the threshold value is below the threshold value is “8”, the user preferably uses 8/600 seconds (= 1/75 seconds) after the inspection frame image is displayed on the display device 500. This means that it is no longer a stereoscopic video.

  Therefore, the delay time calculation unit 350 sets the time during which the shutter is opened until 1/75 seconds after the frame image starts to be supplied. As a result, the user can observe even more beautiful stereoscopic vision.

  In other words, this can also be said that the shutter closing time is advanced by 2/600 seconds (= 1/300 seconds).

  In the 3D video presentation system described above, a case where 3D video content by a frame sequential method is targeted is described as an example, but the present invention is not limited to this.

  For example, when the 3D video content is a line-by-line method in which the image for the right eye and the left eye is switched for each line, the stereoscopic video presentation system according to the present invention can replace the above-described frame location with a line. It can be implemented.

(Modification 1)
In the present embodiment, the case where the delay time calculated by the delay time calculation unit 350 is recorded in the storage unit 240 of the stereoscopic video supply device 200 is described as an example, but the present invention is not limited to this.

  The delay time calculated by the delay time calculation unit 350 may be recorded in a storage unit (not shown) provided in the observation apparatus 300.

  In this case, the shutter switching instruction unit 230 in the stereoscopic video supply device 200 observes the shutter switching instruction at the same time when the frame image supplied from the image supply unit 220 is switched from the right eye to the left eye, or from the left eye to the right eye. Output to the device 300.

  The shutter switching unit 310 in the observation apparatus 300 opens and closes the right eye shutter 320 and the left eye shutter 330 with a delay by the time calculated by the delay time calculation unit 350.

(Modification 2)
In the above-described 3D video presentation system 100, the case where the observation apparatus 300 calculates the delay time has been described as an example, but the present invention is not limited to this. For example, as shown in FIG. 2, the stereoscopic video supply device 200b may be provided. FIG. 2 is a block diagram showing a main configuration of the 3D video presentation system 100b according to the present embodiment.

  As illustrated in FIG. 2, the stereoscopic video supply device 200 b includes a delay time calculation unit 250, unlike the stereoscopic video supply device 200. Since the delay time calculation unit 250 is the same as the delay time calculation unit 350 shown in FIG. 1, detailed description thereof is omitted.

  The delay time calculation unit 250 acquires opening timing information from the shutter switching control unit 310 and acquires illuminance information from the sensor unit 340. Then, the delay time is calculated based on the opening / closing frequency information at the time when the illuminance exceeds a predetermined threshold.

(Processing in the 3D video system 100)
Finally, an example of processing in the inspection mode in the stereoscopic video supply device 200 and the observation device 300 constituting the 3D video system 100 will be described below with reference to FIGS. 3 (a) and 3 (b) and FIG. FIGS. 3A and 3B are flowcharts showing processing in the inspection mode in the stereoscopic video supply device 200. FIG. FIG. 4 is a flowchart showing processing in the inspection mode in the observation apparatus 300.

  As shown in FIG. 3A, when the stereoscopic video supply device 200 is in the inspection mode (Yes in step S10), the stereoscopic video supply device 200 uses the user marker set by the user as the inspection pattern. Is determined (step S11).

  When using a user marker (Yes in step S11), the examination content creation unit 210 reads a user marker set by the user from the memory (step S12). On the other hand, when a user marker is used (No in step S11), the examination content creation unit 210 reads a default marker recorded in advance from the memory (step S13).

  The inspection content creation unit 210 generates inspection content by superimposing the read user marker or default marker on the frame image (step S14). The image supply unit 220 supplies the created inspection content to the display device 500 (step S15). At the same time, the shutter switching control unit 230 controls the opening and closing of the shutter in the observation apparatus 300 (step S16).

  If the stereoscopic video supply device 200 is in the content viewing mode (No in step S10), these processes are terminated without being executed.

  Next, as shown in FIG. 4, when the observation apparatus 300 is in the inspection mode (Yes in step S20), the observation apparatus 300 determines whether it is in the manual control mode (step S21). Here, the manual control mode is a mode in which the opening / closing timing speed of the shutter and the opening / closing angle of the shutter can be set by a user operation. In addition, it is a mode in which opening timing information can be set by a user operation.

  When the observation device 300 is in the manual control mode (Yes in Step S21), the shutter switching control unit 310 sets the opening timing information based on the user operation (Step S22). For example, the number of opening / closing of the shutter when the user presses a predetermined button is set as the opening timing information. In addition, it is preferable that the user presses the button when the displayed marker is in the most beautiful state.

  On the other hand, when the observation apparatus 300 is not in the manual control mode (No in step S21), the shutter switching control unit 310 acquires the opening timing information at the time when the illuminance of the marker exceeds a predetermined threshold in the sensor unit 340 (step S21). S23).

  The delay time calculation unit 350 calculates a delay time based on the release timing information (step S24). Then, the delay time calculation unit 350 transmits the calculated delay time to the stereoscopic video supply device 200 (step S25).

  As illustrated in FIG. 3B, when the stereoscopic video supply device 200 acquires the delay time from the observation device 300, the stereoscopic video supply device 200 records the delay time in the storage unit 240 (step S30).

  Subsequently, when the operation mode is switched from the inspection mode to the content viewing mode by a user operation (step S31), the shutter switching instruction unit 230 refers to the delay time recorded in the recording unit 240, and The shutter switching instruction is delayed (step S32). As a result, the user wearing the observation device 300 can view a beautiful stereoscopic image.

  In the above-described processing, the case where the observation apparatus 300 calculates the delay time has been described as an example. However, the stereoscopic video supply apparatus 200 may of course calculate the delay time.

(Program and recording medium)
The delay time calculation unit 350 (delay time calculation unit 250) included in the 3D video presentation system 100 may be configured by hardware logic. Alternatively, it may be realized by software using a CPU (Central Processing Unit) as follows.

  That is, the delay time calculation unit 350 (delay time calculation unit 250) can execute a CPU such as an MPU that executes instructions of a program that realizes each function, a ROM (Read Only Memory) that stores the program, and the program. A RAM (Random Access Memory) that expands into a format, and a storage device (recording medium) such as a memory that stores the program and various data are provided.

  The object of the present invention is not limited to the case where the program is stored in the program memory of the delay time calculation unit 350 (delay time calculation unit 250), but the program code (execution format program, intermediate code program, Alternatively, the recording medium on which the source program is recorded is supplied to the observation apparatus 300 (stereoscopic image supply apparatus 200b), and the observation apparatus 300 (stereoscopic image supply apparatus 200b) reads the program code recorded on the recording medium. It can also be achieved by executing.

  The recording medium is not limited to a specific structure or type. That is, the recording medium includes, for example, a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and an optical disk such as a CD-ROM / MO / MD / DVD / CD-R. System, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM / flash ROM.

  Further, the object of the present invention can be achieved even if the delay time calculation unit 350 (delay time calculation unit 250) is configured to be connectable to a communication network. In this case, the program code is supplied to the delay time calculation unit 350 (delay time calculation unit 250) via the communication network. This communication network is not limited to a specific type or form as long as it can supply a program code to the delay time calculation unit 350 (delay time calculation unit 250). For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication network, or a protocol originally created by a technician Any simple communication system or the like to be supported may be used.

  The transmission medium constituting the communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, even with wired lines such as IEEE1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared rays such as IrDA and remote control, Bluetooth (registered trademark), 802.11 wireless, HDR, mobile phone It can also be used by radio such as a telephone network, a satellite line, and a terrestrial digital network. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

  The three-dimensional video presentation system according to the present invention can be suitably used in a television receiver that enables an observer to obtain a stereoscopic view, a so-called 3D television.

100 3D video presentation system (stereoscopic video presentation system)
100b 3D video presentation system (stereoscopic video presentation system)
200 stereoscopic video supply device 200b stereoscopic video supply device 210 inspection content creation unit (content creation means)
220 Image supply unit 230 Shutter switching instruction unit 240 Storage unit 250 Delay time calculation unit (timing acquisition unit, delay time calculation unit)
300 Observation Device 300b Observation Device 310 Shutter switching control unit (shutter opening / closing control means)
320 Right-eye shutter 330 Left-eye shutter 340 Sensor unit 350 Delay time calculation unit 500 Display device

Claims (10)

A stereoscopic video supply device that alternately supplies a right-eye image to be observed by the observer's right eye and a left-eye image to be observed by the observer's left eye to the display device, and an observation device that observes the display device. A stereoscopic video presentation system comprising: an observation device that alternately opens and closes a right-eye shutter and a left-eye shutter in synchronization with switching of an image supplied from the stereoscopic video supply device;
The stereoscopic video supply device includes image supply means for supplying an inspection image to a display device when the stereoscopic video presentation system is operated as an inspection mode.
When the observation apparatus operates with the operation mode of the stereoscopic image presentation system as an inspection mode, a shutter that is opened corresponding to the inspection image supplied from the image supply unit is opened as one inspection image. Is provided with shutter opening / closing control means for opening and closing at intervals shorter than the time when
Either the stereoscopic image supply device or the observation device inspects the display device from the stereoscopic image supply device based on the brightness of the display device detected at each timing when the shutter is opened in the inspection mode. A stereoscopic video presentation system comprising delay time calculation means for calculating a delay time from when a working image is supplied to when the shutter is opened. The stereoscopic video supply device further includes content creation means for creating a stereoscopic video content for inspection by superimposing a pattern image for inspection on a part of the image when the operation mode of the stereoscopic video presentation system is the inspection mode. With
The stereoscopic image presenting system according to claim 1, wherein the light detector detects brightness of a region where the inspection pattern image is displayed on the display device.   The delay time calculating means calculates the shutter opening time from when the shutter is opened to when the shutter is closed based on frequency information when the brightness measured by the sensor falls below a threshold value. 3. The stereoscopic image presentation system according to 2. Either of the stereoscopic video supply device and the observation device includes shutter control means for controlling the timing of opening the shutter in the viewing mode based on the delay time calculated by the delay time calculation means in the inspection mode. Or
Alternatively, the stereoscopic video supply device controls the timing of supplying the right-eye image and the left-eye image to the display device based on the delay time calculated by the delay time calculation means in the inspection mode. The three-dimensional video presentation system according to any one of claims 1 to 3, wherein An observation device for observing a display device that alternately displays a right-eye image to be observed by an observer's right eye and a left-eye image to be observed by an observer's left eye, the image being supplied to the display device In the observation device that opens and closes the shutter for the right eye and the shutter for the left eye alternately in synchronization with
When the operation mode of the observation apparatus is the inspection mode, the shutter opened corresponding to the inspection image supplied to the display device is shorter than the time during which one inspection image is supplied. Shutter opening and closing means for opening and closing at intervals;
A delay time calculating means for calculating a delay time from when the inspection image is supplied to the display device until the shutter is opened based on the brightness of the display device detected at each timing of opening the shutter;
An observation apparatus comprising: A stereoscopic video supply device that alternately supplies a right eye image to be observed by an observer's right eye and a left eye image to be observed by an observer's left eye to a display device,
When the operation mode of the stereoscopic video supply device is an inspection mode, an image supply means for supplying an image for inspection to the display device;
Synchronously with the switching of the image supplied from the stereoscopic video supply device, the observation device of the display device that alternately opens and closes the right-eye shutter and the left-eye shutter, and when the observation device is in the inspection mode, Timing acquisition means for acquiring the timing for opening the shutter from an observation device capable of opening and closing the shutter at intervals shorter than the time during which one inspection image is supplied;
A delay time calculating means for calculating a delay time from when the image for inspection is supplied to the display device until the shutter is opened based on the brightness of the display device detected at each timing acquired by the timing acquisition means; ,
A stereoscopic video supply device comprising: A stereoscopic video supply device that alternately supplies a right-eye image to be observed by the observer's right eye and a left-eye image to be observed by the observer's left eye to the display device, and an observation device that observes the display device. A delay time calculation method in a stereoscopic video presentation system comprising: an observation device that alternately opens and closes a right-eye shutter and a left-eye shutter in synchronization with switching of an image supplied from the stereoscopic video supply device. ,
The stereoscopic video supply device, when the operation mode of the stereoscopic video presentation system is an inspection mode, an image supply step of supplying an image for inspection to a display device;
A shutter opening / closing control step for opening / closing a shutter opened corresponding to the inspection image supplied in the image supply step at an interval shorter than the time during which one inspection image is supplied;
A delay time for calculating a delay time from when the inspection image is supplied from the stereoscopic image supply device to the display device until the shutter is opened based on the brightness of the display device detected at each timing of opening the shutter A calculation step;
A delay time calculation method comprising:   A program for causing a computer to operate as the observation apparatus according to claim 5, wherein the computer is caused to function as each of the means included in the observation apparatus.   A program for causing a computer to operate as the stereoscopic video supply device according to claim 6, wherein the computer is caused to function as each unit included in the stereoscopic video supply device.   A computer-readable recording medium in which the program according to claim 8 or 9 is recorded.

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