JP2015060162A - Projection apparatus, projection method, and projection processing program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projection device capable of easily performing video projection on a modified screen such as a human type screen.SOLUTION: A projection device that projects video by using a display element includes: projection means that includes a projection lens; optical zoom means that changes and adjusts zoom magnification of the projection lens; digital zoom means that electronically scales up or down an image by image data; effective image acquisition means that extracts data of an effective image to be displayed in an original image by the image data as projection image data; zoom determination means that determines zoom settings of the optical zoom means and the digital zoom means according to the extracted data of the effective image; and projection control means that causes video of the data of the effective image to be projected coincident with a screen 100 in accordance with the zoom settings of the optical zoom means and the digital zoom means.

Description

  The present invention relates to a projection apparatus, a projection method, and a projection processing program used for digital signage and the like.

  2. Description of the Related Art Conventionally, a projection device called a projector is used for presentations such as exhibitions, academic conferences, and conferences, or for home theaters. In recent years, the use of projection devices such as projectors has also expanded in store advertisements.

  And in image projection called digital signage used for store advertising, guidance, reception etc. using a projection device such as a small projector, in addition to conventional horizontal rectangular screens, there are various types such as humanoid shape and vertically long screen Projection using a screen of the shape is also performed.

  Projection onto a deformed screen different from the conventional horizontally long rectangle is often performed by setting the projection device and the screen as a set, and the projection device and the screen being set at a predetermined distance, and the projection magnification is set constant. In addition, when a person is projected on a vertically long screen or a humanoid screen, image data in which the background other than the person is black is created as a projected image, and a predetermined image is projected on the predetermined screen, and the outside of the screen To avoid projecting unnecessary light.

  The projection device detects the distance to the projection target surface such as a screen, the size of the projection target surface, and the inclination of the projection target surface, and automatically performs zoom adjustment and trapezoidal distortion correction. A technique for facilitating preparation has been proposed (for example, Patent Document 1), and various techniques for automatic adjustment for aligning a projection image with a general rectangular screen have been put into practical use.

JP 2006-121240 A

  In a projection device that uses a screen and a projection device as a set for signage, a screen formed in a contour shape such as a character imitating a person or an animal or a robot is used in addition to a vertically long screen as a deformation screen. Yes, because the image data of the projected image is created and projected according to the screen shape and the aspect ratio of the portrait screen, it takes time to create the image data and it is difficult to perform the projection with change was there.

  In some cases, the image data is created in a standard size that is close to the screen shape and aspect ratio, reducing the amount of data creation. In this case, the projection margin is set at the periphery of the screen or the like at the time of projection. In some cases, the brightness of the image is not sufficiently extracted in terms of pixel utilization efficiency.

  Therefore, the present invention has been made in view of the above-described problems of the prior art, and a projection apparatus, a projection method, and a projection process capable of projecting a bright image on a deformed screen such as a humanoid screen. A program is provided.

  A projection apparatus according to the present invention is a projection apparatus that projects an image using a display element, and includes a projection unit that includes a projection lens, an optical zoom unit that changes and adjusts a zoom magnification of the projection lens, and an image based on image data. Digital zoom means for electronically scaling up and down, effective image acquisition means for extracting effective image data to be displayed in the original image based on the image data as projection image data, and depending on the extracted effective image data Zoom determining means for determining zoom settings of the optical zoom means and the digital zoom means, and a projection control means for projecting the image of the data of the effective image on the screen according to the zoom settings of the optical zoom means and the digital zoom means. And.

  According to the projection method of the projection device of the present invention, when projecting an image by the projection device using a display element, the projection unit includes a projection lens, and the zoom magnification of the projection lens is changed and adjusted by the optical zoom unit. Then, the image based on the image data is electronically enlarged / reduced by the digital zoom means, the effective image data to be displayed in the original image based on the image data is extracted as the projection image data by the effective image acquisition means, and extracted by the zoom determination means. The zoom setting of the optical zoom unit and the digital zoom unit is determined according to the data of the effective image, and the image of the data of the effective image is screened by the projection control unit according to the zoom setting of the optical zoom unit and the digital zoom unit. It is projected to make it correspond to.

  The projection processing program according to the present invention causes a projection control unit to control a projection unit including a projection lens when projecting an image by a projection device using a display element, and the projection control unit uses the optical zoom unit to perform the projection. The zoom magnification of the lens is changed and adjusted, the image based on the image data is electronically enlarged / reduced by the projection control means using the digital zoom means, and the effective image data to be displayed in the original image based on the image data by the effective image acquisition means Is extracted as projection image data, zoom settings of the optical zoom unit and the digital zoom unit are determined according to the data of the effective image extracted by the zoom determination unit, and the optical zoom unit and the digital zoom are determined by the projection control unit. The effective image data is projected according to the zoom setting of the means. The is projected to match the screen to execute the processing to a computer, characterized in that.

  According to the present invention, bright projection can be performed in the projection using various image data.

It is the external appearance perspective view which looked at the projector concerning an embodiment of the present invention from the upper part. It is the external appearance perspective view which looked at the projector concerning an embodiment of the present invention from the lower part. It is an external appearance perspective view when the light projection lid of the projector which concerns on embodiment of this invention is opened. It is explanatory drawing when it projects on a screen with the projection apparatus which concerns on embodiment of this invention. It is an example of the functional circuit block diagram of the projection apparatus which concerns on embodiment of this invention. It is a block diagram which shows the flow of the image processing in the projector which concerns on embodiment of this invention. It is a figure which shows the flowchart of the image process in the projection apparatus which concerns on embodiment of this invention. It is a figure which shows the original image used as the projection image in the projector which concerns on embodiment of this invention. It is a figure explaining an example of the acquisition method of the coincidence magnification of the projection image of an effective image, and a screen in the projector which concerns on embodiment of this invention. It is a figure which shows the relationship of the state of the projection image which projected the original image on the screen in the projection apparatus which concerns on embodiment of this invention. It is a figure which shows another original image used as the projection image in the projector which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that a small projection device 10 combined with a screen will be described as the projection device of the present invention. FIG. 1 is an external perspective view of the projection apparatus 10 as viewed from above, and FIG. 2 is an external perspective view of the projection apparatus 10 as viewed from below. In the present embodiment, the top and bottom are the surfaces having the projection lid 16 shown in FIG. 1 and the opposite surface is the bottom, and the front and rear in the projection apparatus 10 are the projection and projection lids as shown in FIG. The direction in which 16 is opened and the image light is projected is the front.

  The projection apparatus 10 houses a projection control unit, a light source unit that generates image light, a projection unit, and the like, and opens a light projection opening lid 16 provided on the upper portion of the casing as shown in FIGS. Thus, the image light can be projected.

  As shown in FIGS. 1 and 2, the projection device 10 is a small projection device 10 that is a thick cube of about A5 size, and the side panel 14 of the projection device 10 has an internal temperature by a light source. An intake hole 18 and an exhaust hole 17 for reducing the rise are formed, and a cooling fan or the like is disposed therein.

  Further, the front panel 12 is provided with the opening of the camera unit 51 as shown in FIG. 1, and on one side of the projection device 10 having a substantially rectangular parallelepiped shape, as shown in FIG. Various terminals 20 such as an input / output connector unit such as a D-SUB terminal for inputting a video signal to which an analog RGB video signal is input, a remote controller receiving unit, and a power adapter plug are provided.

  On the upper surface of the projection apparatus 10, there is a light projecting opening lid 16 that exposes the projection window so that the projection window can be opened obliquely upward, and an audio output speaker 48 is provided on the upper panel 11. Further, the projection apparatus 10 includes a projection unit as a projection unit such as a projection lens group composed of a plurality of lenses for projecting image light toward the screen 100 (see FIG. 4) or an aspherical mirror. Yes.

  Furthermore, the projection apparatus 10 includes a support plate 15 as a bottom surface thereof. The support plate 15 is provided with tilt feet 79 at the four corners, which are adjustment units for adjusting the projection tilt of the main body, each of which can be adjusted in height. Further, the support plate 15 is provided with a remote controller storage portion 70 that is a space in which the remote controller 75 can be stored from the side.

  Then, as shown in FIG. 3, the projection device 10 can project the image light toward the screen 100 arranged close to the projector 100 as shown in FIG.

  The projection apparatus 10 mainly includes a control unit 38 as a projection control unit, a display encoder 24, a projection unit as a projection unit including a movable lens group 80 and an aspherical mirror 19, and a DMD (Digital Micromirror) as a display element. Device), a light source unit 60 that irradiates light to the DMD, and a power supply unit that supplies electric power to the LEDs that constitute the light source unit 60. (Details will be described later with reference to FIG. 5.)

  The projection unit includes a projection window configured to include a plurality of lenses and a concave aspherical mirror 19 formed of a plurality of lenses and a concave aspherical mirror 19 inside the projection opening.

  The movable lens group 80 emits image light modulated by the DMD in the direction of the aspherical mirror 19, and the aspherical mirror 19 reflects the image light from the movable lens group 80 to the outside through the projection window. Irradiate toward. The aspherical mirror 19 is a concave lens, and magnifies the image light together with the movable lens group 80 and projects it onto the screen 100.

  Next, the projection control means of the projection apparatus 10 will be described using the functional block diagram of FIG. The projection control unit includes a control unit 38, an input / output interface 22, an image conversion unit 23, a display encoder 24, a display drive unit 26, and the like.

  The control unit 38 controls the operation of each circuit in the projection apparatus 10, and includes a CPU, a ROM that stores operation programs such as various settings fixedly, and a RAM that is used as a work memory. ing.

  Then, the image signal of various standards input from the input / output connector unit 21 by this projection control means is in a predetermined format suitable for display by the image conversion unit 23 via the input / output interface 22 and the system bus (SB). After being converted so as to be unified into an image signal, it is output to the display encoder 24.

  The display encoder 24 develops and stores the input image signal in the video RAM 25, generates a video signal from the stored contents of the video RAM 25, and outputs the video signal to the display driving unit 26.

  The display drive unit 26 functions as a display element control unit, and drives the display element 65, which is a spatial light modulation element (SOM), at an appropriate frame rate corresponding to the image signal output from the display encoder 24. By irradiating the light beam emitted from the light source unit 60 to the display element 65, an optical image is formed by the reflected light of the display element 65, and the image is projected and displayed on the screen 100 via the projection unit.

  The movable lens group 80 of the projection unit constitutes an optical zoom unit, which is driven by the lens motor 45 and is controlled by zoom control and focus by automatic control by the control unit 38 and adjustment control from the remote controller 75 via the control unit 38. Adjustments are made.

  The light source unit 60 uses solid-state light-emitting elements such as laser light-emitting elements and light-emitting diodes, and each solid-state light-emitting element is turned on by time division control to emit red, green, and blue light. Thus, the intensity distribution of each color light emitted from each solid-state light emitting element is made uniform by a light guide device such as a light tunnel, and the display element 65 is irradiated using a condensing lens or a mirror.

  The image compression / decompression unit 31 performs a recording process in which the luminance signal and the color difference signal of the image signal are data-compressed by a process such as ADCT and Huffman encoding, and sequentially written in a memory card 32 that is a detachable recording medium. .

  Further, the image compression / decompression unit 31 reads the image data recorded on the memory card 32 in the reproduction mode, decompresses each image data constituting a series of moving images in units of one frame, and converts the image data into an image conversion Based on the image data that is output to the display encoder 24 via the unit 23 and stored in the memory card 32, a process for enabling display of a moving image or the like is performed.

  A key operation signal from the remote controller 75 is received by the Ir receiver 35, and a code signal demodulated by the Ir processor 36 is output to the controller 38.

  In addition, the projection apparatus 10 includes a camera unit 51, acquires an image of the screen 100 by the camera unit 51, and determines the shape and size of the screen 100, the state of the projection image on the screen 100, and the like by the image analysis unit 53. The optical information data 195 is formed by analysis.

  Note that an audio processing unit 47 is connected to the control unit 38 via a system bus (SB). The sound processing unit 47 includes a sound source circuit such as a PCM sound source, converts the sound data into analog in the projection mode and the playback mode, and drives the speaker 48 to emit loud sounds.

  Further, the control unit 38 controls a light source control circuit 41 as a light source control unit, and the light source control circuit 41 is configured so that light of a predetermined wavelength band required at the time of image generation is emitted from the light source unit 60. The light emitting elements that emit light in the red, green, and blue wavelength bands of the light source unit 60 are individually controlled.

  Further, the control unit 38 causes the cooling fan drive control circuit 43 to perform temperature detection using a plurality of temperature sensors provided in the light source unit 60 and the like, and controls the rotation speed of the cooling fan from the result of the temperature detection. Further, the control unit 38 causes the cooling fan drive control circuit 43 to continue the rotation of the cooling fan even after the projection apparatus main power is turned off by a timer or the like, or depending on the result of temperature detection by the temperature sensor, Control such as turning it off is also performed.

  When projecting digital signage with such a projection apparatus 10, as shown in FIG. 6, the control unit 38 has a function as a video range acquisition device 155 that is an effective image acquisition unit, and a scaler 160 that is a digital zoom unit. Functions as a zoom control device 170 that controls the optical zoom means, and a function as a calculation unit 150 that performs various calculations of image processing necessary for signage when performing image clipping, digital zoom, optical zoom, and the like. It is something to have.

Next, a process when digital signage is projected by the projector 10 will be described with reference to FIGS.
FIG. 7 is a view showing a flowchart of image processing in the projection apparatus according to the embodiment of the present invention.
FIG. 8 is a diagram showing an original image 105 that is a projection image in the projection apparatus according to the embodiment of the present invention.
FIG. 9 is a diagram for explaining an example of a method for acquiring the coincidence magnification between the projected image 130 of the effective image and the screen 100.
FIG. 10 is a diagram showing the relationship between the original image 105 and the state of the projected image obtained by projecting the original image in the projection apparatus according to the embodiment of the present invention.
As shown in FIG. 8, the original image 105 that is the basis of the projected image is rectangular, and the effective image (effective image area) (original image effective image 125) in the original image is the black data portion 127 in the original image 105. It is an image of a main part (portrait of a person image) that does not include.
That is, the outside of the original effective image 125 is black data, and the original image 105 is a rectangular image having a shape different from that of the humanoid screen 100.
As shown in FIG. 7, when projecting digital signage, the control unit 38 first projects an original image based on the video signal 190 (S101), and performs an effective image (original image effective image 125 in the original image) by zoom adjustment. The original image effective image matching magnification is stored (S105), in which the zoom magnification when the human image is matched with the humanoid screen 100 is stored as the reference zoom ratio.

The acquisition of the original image effective image matching magnification (S105) is performed in the following procedure.
1) Adjust the movable lens group 80 which is a projection lens, project the original image 105 onto the screen 100 with the projection lens in the tele end state,
2) The state of the screen 100 including the image of the original image 105 projected on the lower part of the screen 100 as shown in FIG.
3) The captured image data is analyzed by the image analysis unit 53, and the original image which is an image portion having a shape similar to the shape of the screen 100 in the original image 105 which is a rectangular image projected on the shape of the screen 100 and a part of the screen 100. Extracting a projected image (effective image image 130) of the effective image 125,
4) Based on the ratio of the shape of the screen 100 and the partial image having a similar shape to the screen shape in the rectangular image, the zoom magnification from the tele end for matching the height h1 of the partial image with the height h2 of the screen 100 is set. Calculate
5) The zoom magnification is stored as a reference zoom rate.

  In order to make the effective image in the original image coincide with the humanoid screen 100, the original image 105 is projected on the screen 100, and the operator of the projection apparatus 10 performs zoom adjustment manually, and the effective image video 130 is displayed. The person image to be matched with the humanoid screen 100 may be stored as the reference zoom ratio.

  Then, when the original image 105 is projected by adjusting the zoom ratio of the projection lens to the stored reference zoom rate, as shown in FIG. 10A, the original effective image 125 which is a human image in the original image is displayed. An effective image image 130 that is an image is projected to a size that matches the humanoid screen 100, and the coincidence projection range 110 that is the original image projection range 120 on which the entire original image 105 is projected is wider than the range of the screen 100. It becomes the state of.

  The projection apparatus 10 employs a shift optical system in which the central normal of the display element 65 is positioned below the optical axis of the projection lens. As shown in FIG. The screen 100 is adjusted to the position A at the center of the lower edge.

Thus, the coincidence projection range 110 in which the image of the image formed by the effective display area, which is an image-forming area of the display element 65, is projected by adjusting the zoom rate by the projection lens is larger than the height of the screen 100. Therefore, the height of the coincidence projection range 110 is adjusted to the height of the screen 100, and the optical zoom adjustment rate is reduced to a rectangular effective projection range 115 having the same aspect ratio as the aspect ratio of the display element 65. Decision (S110) is made.
That is, the optical zoom adjustment rate for achieving the state of FIG.

  In the optical zoom adjustment rate determination (S110), when the original image effective image matching magnification is automatically acquired by the camera unit 51 in S105, that is, the original image is projected based on the video signal 190 (S101). When the state of the screen 100 including the rectangular original image image projected on the lower part of the screen 100 at the time of projection is acquired by the camera unit 51, the height of the rectangular original image image projected on the lower part of the screen 100, The height of the coincidence video range is calculated based on the reference zoom ratio that has already been calculated and determined, and the reduction ratio that matches the height of the coincidence projection range 110 with the height of the screen 100 is determined. it can.

  Note that when recognizing the height of the projected rectangular original image video, it is preferable to project the image data that is not black data as the image data to be projected.

  When the original effective image 125, which is an effective image in the original image, is manually matched with the humanoid screen 100, the height of the screen 100 matches the height of the projected image and the image of the screen 100 that match. Thus, the zoom adjustment is performed, and the zoom adjustment rate at that time is stored.

  Also in this case, it is possible to easily match the image data to be projected in a state where the image data that is not black data is projected.

  Then, as the video range acquisition device 155, the control unit 38 obtains the data of the portion of the human image (original image effective image 125) that is the main projection image area from the video signal 190 that has been unified into a predetermined format by the image conversion unit 23. Extracted as valid image data.

  In this video range acquisition process (S120), if the original image 105 is already processed human signage data, the human image range excluding the black range formed around the person image is projected as the projected image area. The image data of a person image is used as effective image data.

  Further, as shown in FIG. 11A, if the original image is image data such as a snap photograph or a video image, the data of the person shape is extracted, and a template or the like is used to extract eyes or mouth. Image recognition processing such as depth detection processing is performed by face detection processing, and image data of a nearby person is extracted and used as effective image data.

  Next, the effective image data is matched with the number of vertical pixels of the video RAM 25, that is, the height of the effective image data is matched with the number of vertical pixels around the position corresponding to the position A in the effective display area of the display element. A digital zoom enlargement ratio to be enlarged is calculated (S125), and a scaler parameter (S130) for enlarging effective image data at this digital zoom enlargement ratio is set (see FIG. 10C).

  In this way, the digital zoom magnification ratio can be determined from the ratio of the vertical or horizontal length of the effective image data to the vertical or horizontal length of the entire original image.

  Then, the control unit 38 enlarges the original effective image 125 according to the set scaler parameter and sends it to the display encoder 24, develops the data of the effective image sent to the display encoder 24 in the video RAM 25, and displays it on the display encoder 24. The drive unit 26 is controlled to perform display element drive control. As a result, the digitally zoomed (electronically enlarged) image of the original image effective image 125 based on the effective image data is projected onto the screen 100, and an effective image video 130 is formed.

  At this time, if the original image is an object as shown in FIG. 11A, the background area outside the original effective image 125 is a black data portion 127 as shown in FIG. All of them are formed as the original image 105 of the projection image.

  When projecting the projected image including the original effective image 125 based on the effective image data onto the screen 100, the control unit 38, as the zoom control device 170, adjusts the optical zoom adjustment rate to the stored reference zoom rate. The projection zoom magnification obtained by multiplying is calculated to determine the projection zoom ratio, and optical zoom driving (S135) for adjusting the movable lens group 80 is performed on the projection zoom ratio to start projection.

  As described above, when performing digital signage projection, projection image data such as a human image that is a part of the original image data is extracted from the video signal 190 that is the original image data as effective image data. The projection image data is image data that matches the effective area of the display element 65. Therefore, according to the above embodiment, the original image data (for example, XGA image) having a larger number of pixels than the number of pixels (for example, SVGA) of the video RAM 25 is uniformly enlarged by pixel interpolation by digital zoom, Compared with the case where the projection image data is allocated to the number of pixels of the video RAM 25 and the entire projection is performed, the deterioration of the image data can be reduced (the resolution is improved).

  Further, a reference zoom rate for matching the original image effective image 125 such as a human image in the original image data with the screen 100 is obtained in advance, and an effective projection range 115 obtained by matching the original image projection range 120 with the size of the screen 100 from the reference zoom rate. In order to obtain the zoom ratio to be corrected and to reduce the original image projection range 120 to the effective projection range 115 and to enlarge the image data by the digital zoom magnification that returns the effective image to the size of the screen 100, the original effective image 125 is surely obtained. Can be projected in conformity with the humanoid screen 100.

  In the above embodiment, the example in which the original effective image 125 is adjusted to the vertical length of the screen 100 has been described. However, the same can be applied to the case where the original effective image 125 is adjusted to the horizontal length.

  As described above, the projection apparatus 10 according to the present embodiment has extracted the projection unit, the optical zoom unit, the digital zoom unit, and the effective image acquisition unit that extracts the data of the effective image to be displayed in the original image. A zoom determination unit that determines the zoom settings of the optical zoom unit and the digital zoom unit according to the data; and a projection control unit that projects an image of an effective image based on the projection image data so as to match the screen 100 according to the zoom setting. It is possible to realize bright digital signage projection by extracting image data suitable for signage from various digital photograph data.

  In addition, the zoom determination means provides the screen 100 with an optical zoom magnification that matches the vertical or horizontal length of the image based on the effective image with the vertical or horizontal length of the screen 100, and the image projection range based on the effective display area in that state. Since the optical zoom rate is determined by the optical zoom adjustment rate that is reduced and matched to the effective projection range that is circumscribed, it is possible to easily perform a bright projection with good appearance by matching the range of the projected image with the screen 100.

  Then, the zoom determining means determines a digital zoom ratio for enlarging the effective image until it is inscribed in the effective display area, and the projection control means performs zoom setting of the digital zoom means based on the digital zoom ratio to display the effective image in the effective display area. Therefore, the effective area of the display element can be used without waste, and a bright projection image can be formed.

  In addition, the zoom determining means calculates a digital zoom ratio by calculating a magnification for matching the vertical or horizontal length of the effective image with the vertical or horizontal length of the original image based on the original image and the effective image in the original image. Therefore, it is possible to easily utilize the effective display area of the display element to the maximum.

  Furthermore, the effective projection range circumscribing the image projection range of the effective display area with the screen 100 in a state where the vertical or horizontal length of the image of the effective image is matched with the vertical or horizontal length of the screen 100 by the zoom determining means. Since the reciprocal of the optical zoom adjustment rate to be adjusted to is determined as the digital zoom rate, the digital zoom rate can be easily calculated.

  And since this projection apparatus 10 extracts an effective image by performing image recognition of an original image by an effective image acquisition means, it can easily create image data for digital signage from various image data. .

  For example, if the depth information of the original image is acquired by the effective image acquisition means, and an image of an object displayed at a size of a predetermined ratio or more in front is acquired as an effective image, image data suitable for digital signage is obtained. Can be easily created.

  Further, if the person in the original image is detected by the effective image acquisition means, and the detected face image or the image of the face and the upper body is acquired as the effective image, it is suitable for the humanoid screen 100. Signage image data can be easily created.

  Also, if the effective image acquisition means detects eyes, mouths, etc. using a template to detect a person's face, person detection can be performed easily.

  Further, if the effective image acquisition means acquires the shape of the screen 100, detects an image of an object substantially similar to the shape of the screen 100 acquired in the original image, and makes the image of this object an effective image, Creation of image data for digital signage that matches the shape of the screen 100 can be facilitated.

  Further, since the zoom determination unit causes the optical zoom unit and / or the digital zoom unit to perform zoom setting so that the image is enlarged or reduced about the optical axis of the projection unit, the projection image is sized to fit the screen 100. When enlarging, the image can be projected without causing unnecessary blanks and projections around the screen 100.

  In addition, the projection method according to the present embodiment, when projecting an image by a projection device using a display element, changes and adjusts the zoom magnification of the projection lens by the optical zoom means, and enlarges or reduces the image based on the image data by the digital zoom means. , The effective image data in the original image is extracted by the effective image acquisition means, the zoom settings of the optical zoom means and the digital zoom means are determined according to the effective image data extracted by the zoom determination means, and the zoom is controlled by the projection control means Since the projection method projects the image of the effective image so as to coincide with the screen 100 according to the setting, the image projection by digital signage can be easily performed.

  When projecting an image by the projection device, the projection control unit controls the projection unit, the projection control unit uses the optical zoom unit to change and adjust the zoom magnification of the projection lens, and the projection control unit uses the digital zoom unit. The image by the image data is enlarged / reduced, the effective image data in the original image is extracted by the effective image acquisition unit, and the zoom setting of the optical zoom unit and the digital zoom unit is set according to the effective image data extracted by the zoom determination unit. A projection processing program that causes a computer to execute a process of determining and projecting an image of an effective image to match the screen 100 according to a zoom setting can easily perform image projection by digital signage.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

The invention described in the first claim of the present application will be appended below.
[1] A projection device for projecting an image using a display element,
Projection means comprising a projection lens;
Optical zoom means for changing and adjusting the zoom magnification of the projection lens;
A digital zoom means for electronically enlarging and reducing an image based on image data;
Effective image acquisition means for extracting, as projection image data, data of an effective image to be displayed in the original image based on the image data;
Zoom determining means for determining zoom settings of the optical zoom means and the digital zoom means in accordance with the extracted data of the effective image;
Projection control means for projecting the image of the data of the effective image so as to coincide with the screen according to the zoom setting of the optical zoom means and the digital zoom means;
A projection apparatus comprising:
[2] The zoom determining means determines an optical zoom ratio based on an optical zoom magnification and an optical zoom adjustment ratio, and determines a vertical or horizontal length of an image based on the effective image as a vertical or horizontal length of the screen. In a state where the optical zoom magnification and the vertical length of the image based on the effective image are adjusted to the vertical length of the screen, or the horizontal length of the video based on the effective image is adjusted to the horizontal length of the screen. An optical zoom adjustment rate that reduces and matches the image projection range of the effective display area, which is an area for forming an image of the display element, to an effective projection range of the same aspect ratio as the aspect ratio of the display element circumscribing the screen; The projection apparatus according to [1], wherein the optical zoom ratio is determined by: and the zoom setting of the optical zoom means is performed based on the optical zoom ratio.
[3] The zoom determining means determines a digital zoom ratio for enlarging the effective image until it is inscribed in an effective display area which is an area for forming an image of the display element.
The projection apparatus according to [1] or [2], wherein the projection control unit performs the zoom setting of the digital zoom unit based on the digital zoom rate and displays the effective image in the effective display area. .
[4] The zoom determining means may calculate a magnification for causing the original image and the effective image in the original image to match the vertical or horizontal length of the effective image with the vertical or horizontal length of the original image. The projection apparatus according to any one of [1] to [3], wherein the digital zoom rate is determined by calculation.
[5] The projection apparatus according to any one of [2] to [4], wherein the zoom determination unit determines an inverse of the optical zoom adjustment rate as the digital zoom rate.
[6] The projection apparatus according to any one of [1] to [5], wherein the effective image acquisition unit extracts the effective image by performing image recognition of the original image. .
[7] The effective image acquisition unit acquires depth information of the original image, and acquires an image of an object displayed at a size of a predetermined ratio or more in front as the effective image. [6] The projection device according to [6].
[8] The effective image acquisition means detects a person in the original image and acquires the detected face image of the person or an image of the face and the upper body as the effective image. ] Or the signage projector according to [7].
[9] The projection apparatus according to [8], wherein the effective image acquisition unit detects a face of a person by detecting eyes, a mouth, and the like using a template.
[10] The effective image acquisition means acquires the shape of the screen, detects an image of an object substantially similar to the shape of the screen acquired in the original image, and converts the image of the object into the effective image. The projection apparatus according to any one of [6] to [9], which is acquired as:
[11] The zoom determination unit causes the optical zoom unit and / or the digital zoom unit to perform zoom setting so that an image is enlarged or reduced about the optical axis of the projection unit. ] To [10] above.
[12] When projecting an image with a projection device using a display element,
Projection is performed by a projection means including a projection lens,
The zoom magnification of the projection lens is changed and adjusted by optical zoom means,
The digital zoom means electronically enlarges / reduces the image based on the image data,
The effective image acquisition means extracts the effective image data to be displayed in the original image based on the image data as projection image data,
Determining zoom settings of the optical zoom means and the digital zoom means according to the data of the effective image extracted by the zoom determination means;
According to the zoom setting of the optical zoom unit and the digital zoom unit, the image of the effective image data is projected so as to coincide with the screen by the projection control unit.
A projection method characterized by that.
[13] When projecting an image with a projection device using a display element,
Controlling the projection means including the projection lens by the projection control means;
The projection control means changes and adjusts the zoom magnification of the projection lens using an optical zoom means,
The projection control means electronically enlarges / reduces the image based on the image data using the digital zoom means,
The effective image acquisition means extracts the effective image data to be displayed in the original image based on the image data as projection image data,
The zoom setting of the optical zoom unit and the digital zoom unit is determined according to the data of the effective image extracted by the zoom determination unit,
Projecting the image of the data of the effective image on the screen according to the zoom setting of the optical zoom unit and the digital zoom unit by the projection control unit,
A projection processing program for a projection apparatus, characterized by causing a computer to execute processing.

DESCRIPTION OF SYMBOLS 10 Projector 11 Top panel 12 Front panel 14 Side panel 15 Support plate 16 Light projection cover 17 Exhaust hole 18 Intake hole 19 Aspherical mirror 20 Various terminals 21 Input / output connector part 22 Input / output interface 23 Image conversion part 24 Display encoder 25 Video RAM
26 Display drive unit 31 Image compression / decompression unit 32 Memory card 35 IR reception unit 36 IR processing unit 38 Control unit 41 Light source control circuit 43 Cooling fan drive control circuit 45 Lens motor 47 Audio processing unit 48 Speaker 51 Camera unit 53 Image analysis unit 60 Light source unit 65 Display element 70 Remote controller storage unit 75 Remote controller 79 Tilt foot 80 Movable lens group 100 Screen 105 Original image 110 Coincidence projection range 115 Effective projection range 120 Original image projection range 125 Original image effective image 127 Black data portion 130 Effective image Video 150 Calculation unit 155 Video range acquisition device 160 Scaler 170 Zoom control device 190 Video signal 195 Optical information data

Claims (13)

A projection device for projecting an image using a display element,
Projection means comprising a projection lens;
Optical zoom means for changing and adjusting the zoom magnification of the projection lens;
A digital zoom means for electronically enlarging and reducing an image based on image data;
Effective image acquisition means for extracting, as projection image data, data of an effective image to be displayed in the original image based on the image data;
Zoom determining means for determining zoom settings of the optical zoom means and the digital zoom means in accordance with the extracted data of the effective image;
Projection control means for projecting the image of the data of the effective image so as to coincide with the screen according to the zoom setting of the optical zoom means and the digital zoom means;
A projection apparatus comprising:   The zoom determining means determines an optical zoom rate based on an optical zoom magnification and an optical zoom adjustment rate, and the vertical or horizontal length of the image of the effective image is changed to the vertical or horizontal length of the screen. The optical zoom magnification to be adjusted and the vertical length of the image based on the effective image matched to the vertical length of the screen, or the horizontal length of the video based on the effective image matched to the horizontal length of the screen An optical zoom adjustment rate that reduces and matches the video projection range of the effective display area, which is an area for forming an image of the display element, to an effective projection range having the same aspect ratio as the aspect ratio of the display element circumscribing the screen. The projection apparatus according to claim 1, wherein a zoom rate is determined, and the zoom setting of the optical zoom unit is performed based on the optical zoom rate. The zoom determining means determines a digital zoom ratio for enlarging the effective image until it is inscribed in an effective display area which is an area for forming an image of the display element,
The projection apparatus according to claim 1, wherein the projection control unit performs the zoom setting of the digital zoom unit based on the digital zoom rate to display the effective image in the effective display area.   The zoom determining means calculates a magnification for matching the vertical or horizontal length of the effective image with the vertical or horizontal length of the original image based on the original image and the effective image in the original image. The projection apparatus according to claim 1, wherein the digital zoom rate is determined.   The projection apparatus according to claim 2, wherein the zoom determination unit determines an inverse number of the optical zoom adjustment rate as the digital zoom rate.   6. The projection apparatus according to claim 1, wherein the effective image acquisition unit extracts the effective image by performing image recognition of the original image.   The said effective image acquisition means acquires the depth information of the said original image, and acquires the image of the object displayed by the magnitude | size more than a predetermined ratio foremost as the said effective image. The projection device described.   The said effective image acquisition means performs the detection of the person in the said original image, and acquires the image of the detected person's face or the image of the face and the upper body as the said effective image. 8. The signage projection apparatus according to 7.   The projection apparatus according to claim 8, wherein the effective image acquisition unit detects a face of a person by detecting eyes, a mouth, and the like using a template.   The effective image acquisition means acquires the shape of the screen, detects an image of an object substantially similar to the shape of the screen acquired in the original image, and acquires the image of the object as the effective image. The projection apparatus according to claim 6, wherein the projection apparatus is a projector.   The zoom determination unit causes the optical zoom unit and / or the digital zoom unit to perform zoom setting so that an image is enlarged or reduced about the optical axis of the projection unit. The projection device according to any one of 10. When projecting an image with a projection device using a display element,
Projection is performed by a projection means including a projection lens,
The zoom magnification of the projection lens is changed and adjusted by optical zoom means,
The digital zoom means electronically enlarges / reduces the image based on the image data,
The effective image acquisition means extracts the effective image data to be displayed in the original image based on the image data as projection image data,
Determining zoom settings of the optical zoom means and the digital zoom means according to the data of the effective image extracted by the zoom determination means;
According to the zoom setting of the optical zoom unit and the digital zoom unit, the image of the effective image data is projected so as to coincide with the screen by the projection control unit.
A projection method characterized by that. When projecting an image with a projection device using a display element,
Controlling the projection means including the projection lens by the projection control means;
The projection control means changes and adjusts the zoom magnification of the projection lens using an optical zoom means,
The projection control means electronically enlarges / reduces the image based on the image data using the digital zoom means,
The effective image acquisition means extracts the effective image data to be displayed in the original image based on the image data as projection image data,
The zoom setting of the optical zoom unit and the digital zoom unit is determined according to the data of the effective image extracted by the zoom determination unit,
Projecting the image of the data of the effective image on the screen according to the zoom setting of the optical zoom unit and the digital zoom unit by the projection control unit,
A projection processing program for a projection apparatus, characterized by causing a computer to execute processing.

Images