JP2010072477A - Image display apparatus, image display method, and program - Google Patents

Abstract

An image display device, an image display method, and a program capable of perceiving a stereoscopic effect with a simple configuration are provided.
A display control means for displaying on a display means an image photographed from one photographing angle among a plurality of images photographed from mutually different photographing angles with respect to an object to be displayed, and an image display device A detection unit that detects an inclination of the image display device, and a viewpoint direction of a user who operates the image display device is determined from the inclination detected by the detection unit, and the plurality of images are captured from an imaging angle corresponding to the viewpoint direction. Specifying means for specifying the image, and adjusting means for adjusting the size of the image specified by the specifying means according to the inclination detected by the detecting means, wherein the display control means is the adjusting means The processed image is displayed on the display means.
[Selection] FIG.

Description

  The present invention relates to an image display device, an image display method, and a program.

  With the spread of computers, there are increasing opportunities to use three-dimensional models that represent three-dimensional objects. For example, in Patent Document 1, when a three-dimensional model is arranged in various virtual environments according to a depth distribution based on a stereoscopic image, the three-dimensional model is automatically changed according to the arranged virtual environment to create a virtual space. Disposition techniques are disclosed.

  Various techniques for making an observer perceive a three-dimensional model as a three-dimensional image have been proposed as an effective method for displaying a three-dimensional model as described above. For example, there are methods using polarized glasses, and methods using light control elements such as lenticular lenses and parallax barriers. In addition, various display methods such as a binocular system, a multi-lens system, and an integral photography system exist in the system using the light control element.

JP 2003-323636 A

  However, in the conventional display method, dedicated glasses such as polarized glasses are used, or a special device such as a light beam control element or complicated image processing is required. Therefore, there is a problem that the number of devices is increased and the cost is increased. is there. Therefore, there is a demand for a display technique that can perceive a three-dimensional effect with a simple configuration.

  The present invention has been made in view of the above, and an object of the present invention is to provide an image display device, an image display method, and a program capable of perceiving a stereoscopic effect with a simple configuration.

  In order to solve the above-described problems and achieve the object, the present invention is an image display device provided with a display unit, and a plurality of objects captured from a plurality of photographing angles different from each other are displayed. Among the images, a display control means for displaying an image photographed from one photographing angle on the display means, a detection means for detecting the inclination of the image display device, and the inclination detected by the detection means, A specifying unit that determines a viewpoint direction of a user who operates the image display device, specifies an image shot from a shooting angle corresponding to the viewpoint direction from the plurality of images, and a tilt detected by the detection unit Adjusting means for adjusting the size of the image specified by the specifying means, wherein the display control means displays the image processed by the adjusting means on the display means. And features.

  Further, the present invention is an image display method executed by an image display device including a display unit, wherein the display control unit is configured to capture a plurality of images of a target object to be displayed from a plurality of different shooting angles. A display control step for displaying an image taken from one shooting angle on the display means, a detection step for detecting the inclination of the image display device, and a specifying means for the detection step. A specifying step of determining a viewpoint direction of a user who operates the image display device from the inclination detected in step, and specifying an image shot from a shooting angle corresponding to the viewpoint direction from the plurality of images, and an adjusting unit, An adjustment step of adjusting the size of the image specified in the specific step according to the inclination detected in the detection step, and the display control step includes an image processed in the adjustment step And displaying on the display means.

  According to the present invention, a computer of an image display device provided with a display unit is photographed from one photographing angle among a plurality of images photographed from a plurality of different photographing angles with respect to an object to be displayed. From the display control means for displaying the displayed image on the display means, the detection means for detecting the inclination of the image display apparatus, and the inclination detected by the detection means, the viewpoint direction of the user operating the image display apparatus is determined. And specifying means for specifying an image photographed from a plurality of images taken at a photographing angle corresponding to the viewpoint direction, and determining the size of the image specified by the specifying means according to the inclination detected by the detecting means. The display control means functions as an adjusting means for adjusting, and the display control means displays an image processed by the adjusting means on the display means.

  According to the present invention, the user's viewpoint direction is determined based on the tilt of the image display device, and an image at a shooting angle corresponding to the viewpoint direction is displayed on the display unit, so that it is perceived as a stereoscopic image by the action of motion parallax. Therefore, the user can perceive a stereoscopic effect with a simple configuration. Further, by adjusting the size of the image according to the inclination of the image display device, the appearance of the object when the image is displayed on the display means can be set to a state substantially equivalent to that at the time of shooting. The actual feeling of the object can be further improved.

  Exemplary embodiments of an image display device, an image display method, and a program according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention shall not be limited to the following embodiment.

  FIG. 1 is a diagram schematically illustrating an example of an external configuration of an image display apparatus 100 according to the present embodiment. The image display device 100 is a mobile phone, a portable game machine, a digital camera, a product presentation device that presents information related to products, and the like, and is configured as a small portable device.

  As shown in FIG. 1, the image display apparatus 100 includes a display unit 16 including a display device such as a liquid crystal panel and an operation unit 17 including an input device such as a button. In response to the operation, image data or the like is displayed on the display unit 16. In FIG. 1, the image display apparatus 100 includes a tilt sensor 14 (not shown) described later, and can detect tilts around three axes indicated by the X axis, the Y axis, and the Z axis in the figure. It has become.

  FIG. 2 is a block diagram illustrating an example of a hardware configuration of the image display apparatus 100 illustrated in FIG. As shown in the figure, the image display apparatus 100 includes a processor 11, a ROM 12, a RAM 13, a tilt sensor 14, a storage unit 15, a display unit 16, and an operation unit 17. Connected by.

  The processor 11 is composed of an arithmetic device such as a CPU (Central Processing Unit) and a GPU (Graphics Processing Unit), and executes each predetermined program stored in the ROM 12 or the storage unit 15, thereby allowing each unit of the image display device 100 to be executed. Control all over.

  Further, the processor 11 cooperates with a predetermined program stored in the ROM 12 or the storage unit 15 in advance, and functions of a selection receiving unit 111, a display control unit 112, a viewpoint image specifying unit 113, and an image adjusting unit 114, which will be described later. Realize the part.

  The ROM 12 is a read-only storage device that stores the BIOS and the like of the image display apparatus 100. The RAM 13 functions as a buffer and is a volatile storage device that temporarily stores various data in a rewritable manner.

  The tilt sensor 14 is configured by an acceleration sensor or the like, detects the tilt of the image display device 100, and outputs a tilt angle representing the tilt of each axis direction of the image display device 100 to the processor 11 as a detection result. Here, the “tilt of the image display device 100” is based on three axes (X axis, Y axis, Z axis) passing through the center of the display unit 16, and the display unit around any one of these three axes. It means the angle when 16 is rotated. In the present embodiment, the inclination for all three axes can be detected. However, the inclination may be detected only for any two of these three axes, or for any one of the axes. Only a tilt may be detected.

  The storage unit 15 is configured by a nonvolatile storage device such as an HDD or a semiconductor storage device, and stores a program and various setting information for realizing an image display process to be described later. A multi-viewpoint image for the target object is stored. Here, the “multi-viewpoint image” means a group of images (viewpoint images) for each viewpoint position obtained by photographing an object to be displayed from a plurality of different viewpoint positions. Hereinafter, a method for acquiring a multi-viewpoint image will be described with reference to FIGS.

  FIG. 3 is a diagram showing a photographing method when photographing the object O to be displayed from the XZ plane direction in the drawing. Note that the type, shape, and the like of the object O are not particularly limited. For example, a specific product may be the object O.

  First, a circumference around the object O (hereinafter referred to as an imaging trajectory T) is defined, and the object O is imaged by the camera C from a reference position serving as a reference in the imaging trajectory T. Here, an image obtained by shooting from each position on the shooting trajectory T is referred to as a viewpoint image. The reference position is not particularly limited, but is preferably the front direction of the object O.

  After shooting from the reference position, the camera C is moved to a position on the shooting trajectory T that is a predetermined distance away from the reference position, and the object O is shot from this position. At this time, since the position on the shooting trajectory T to which the camera C is moved corresponds to the viewpoint of the user in the image display device 100 as described later, it is preferable to photograph the object O from a plurality of different positions. . For example, as shown in FIG. 3, after shooting from the reference position (0 degree position), the arc of the shooting trajectory T from the reference position is 30 degrees, 60 degrees, −30 degrees, and −60 degrees. When the images are sequentially moved to the positions and photographing is performed at each of these positions, viewpoint images for a total of five viewpoints are obtained. Hereinafter, the angle formed between the reference position and the shooting position around the target object, that is, the arc angle between the reference position and the shooting position on the shooting trajectory T is referred to as a shooting angle.

  Then, each viewpoint image photographed in the above procedure is associated with the photographing angle from the reference position at the time of photographing, and is stored in the storage unit 15 as a multi-viewpoint image about the object O.

  FIG. 4 is a diagram showing an example of a multi-viewpoint image for the object O generated under the photographing conditions shown in FIG. As shown in FIG. 4, the viewpoint image of the object O photographed from each photographing position is stored in association with the photographing angle from the reference position. Here, the interval between the shooting angles and the number of viewpoint positions are not particularly limited, but may be set to an interval or the number enough to cause motion parallax when the viewpoint images are continuously displayed in the order of the shooting angles. preferable.

  3 and 4, the imaging method on the XZ plane has been described, but it is assumed that imaging is also performed in the other plane directions (XY plane, YZ plane). That is, when photographing the object O in the three-axis directions, photographing is performed along the photographing trajectory T on a sphere centered on the object O. In this case, the viewpoint image at each photographing position and the photographing angle from the reference position to the photographing position in the three axis directions are stored in association with each other.

  Further, the distance between the object O and the camera C is not particularly limited, but is preferably maintained at a constant value. Examples of a method of shooting while maintaining the distance between the object O and the camera C include the following shooting methods.

  First, the imaging trajectory T is constituted by a track such as a rail, and the camera C is movably installed on the track. Then, by continuously shooting the object O while moving the camera C at a constant speed, the viewpoint image and the shooting angle at each shooting position are maintained while maintaining the distance between the object O and the camera C. And can get. At this time, the moving speed of the camera C is preferably a speed in consideration of the amount of light captured by the camera C and the influence of blurring.

  Further, by incorporating a sensor similar to the tilt sensor 14 into the camera C, it is possible to acquire the viewpoint image and the shooting angle without providing a trajectory. In this case, in order to maintain the distance between the object O and the camera C, a distance measuring sensor or the like for measuring the distance to the object O is provided in the camera C, and a laser pointer or the like is used to maintain the shooting direction. It is preferable to take a picture while facing the object O. Note that if a deviation occurs from the shooting trajectory T during shooting, the appearance and size of the object O will differ from those shot with the shooting trajectory T, but based on feature points such as the silhouette of the object O, It is possible to correct to the specified appearance and size.

  In the above-described multi-viewpoint image acquisition method, it is assumed that a still image is acquired by actual shooting. However, the present invention is not limited to this, and may be acquired in the form of a moving image. In this case, each frame constituting the moving image and the shooting position (shooting angle) where the frame was shot are stored in association with each other.

  In addition, even when a multi-viewpoint image is acquired using the CG technique, the above-described multi-viewpoint image acquisition method and principle are the same. Specifically, by rendering the 3D model rendering viewpoint at each viewpoint position while moving the rendering viewpoint of the 3D model to be the object O on a circle (or sphere) centered on the 3D model. A set of the shooting angle and the parallax image can be acquired. In the case of using the CG technique, the multi-viewpoint image may be acquired in advance or may be acquired in real time every time the tilt angle is detected.

  Returning to FIG. 2, the display unit 16 includes a display device such as an LCD (Liquid Crystal Display) or a CRT (Cathode Ray Tube), and various information such as the above-described multi-parallax image based on a display signal from the processor 11. Is displayed.

  The operation unit 17 is an input device including an operation button such as a keyboard and a pointing device. The operation unit 17 receives user operation content as an input signal and outputs the input signal to the processor 11. The operation unit 17 may be configured to form a touch panel integrally with the display unit 16.

  FIG. 5 is a block diagram illustrating a functional configuration relating to display of a multi-viewpoint image. As shown in FIG. 5, the processor 11 functions the selection receiving unit 111, the display control unit 112, the viewpoint image specifying unit 113, and the image adjusting unit 114 in cooperation with a predetermined program stored in the storage unit 15. Realize as a part.

  The selection receiving unit 111 is a functional unit that receives an instruction input from a user input via the operation unit 17. Specifically, when a multi-viewpoint image for a specific object is selected via the operation unit 17 among the multi-viewpoint images for each object stored in the storage unit 15, the selection receiving unit 111 selects this The selected multi-viewpoint image is set as a display target.

  The display control unit 112 is a functional unit that controls display on the display unit 16, and displays the viewpoint image included in the multi-viewpoint image that is the display target by the selection receiving unit 111 on the display unit 16. Further, the display control unit 112 displays the viewpoint image whose size has been adjusted by the image adjustment unit 114 on the display unit 16.

  The viewpoint image specifying unit 113 determines the line-of-sight direction of the user observing the image display device 100 based on the detection angle input from the tilt sensor 14, and the viewpoint image corresponding to the line-of-sight direction is displayed as a display target. Specify from viewpoint images. Hereinafter, the operation of the viewpoint image specifying unit 113 will be described with reference to FIGS. 6 and 7.

  FIG. 6 is a diagram for explaining the operation of the viewpoint image specifying unit 113. In FIG. 6, it is assumed that the image display apparatus 100 is disposed in front of the user's viewpoint position V, and the viewpoint image at the reference position (shooting angle 0) included in the multi-viewpoint image to be displayed is displayed. It is assumed that Here, it is assumed that the multi-view image to be displayed is the multi-view image for the object O described with reference to FIG.

  After the viewpoint image at the reference position is displayed, as shown by the broken line in FIG. 6, when the image display apparatus 100 is rotated right by a predetermined angle θ around the XZ plane, that is, the Y axis, as shown by the broken line in FIG. The tilt sensor 14 detects the tilt angle θ around the Y axis. Here, as a characteristic of the inclination sensor 14, the inclination to the right rotation around the Y axis is detected at a positive angle, and the inclination to the left rotation is detected at a negative angle.

  When the viewpoint image specifying unit 113 receives the tilt angle θ from the tilt sensor 14, the viewpoint image specifying unit 113 determines the tilt angle θ as the line-of-sight direction of the user with respect to the image display device 100. Here, the line-of-sight direction means an angle of relative shift of the user's viewpoint position with respect to the front position of the image display apparatus 100. For example, the inclination of the image display device 100 indicated by a broken line in FIG. 6 is such that the viewpoint position V of the user located in front of the image display device 100 is at an angle θ about the image display device 100 as shown in FIG. This corresponds to the movement to the viewpoint position V ′ shifted by a distance. Therefore, the viewpoint image specifying unit 113 determines the inclination angle θ as the user's line-of-sight direction with respect to the image display device 100. When the tilt detection characteristic of the tilt sensor 14 is opposite to that of the present configuration, the tilt angle θ detected by the viewpoint image specifying unit 113 is set as a negative sign, and −θ is determined as the user's line-of-sight direction. To do.

  Further, when the visual line direction is determined, the viewpoint image specifying unit 113 specifies a viewpoint image corresponding to the visual line direction from the multi-viewpoint image for the object O to be displayed. Here, the line-of-sight direction corresponds to the shooting direction of the camera C in FIG. Therefore, the viewpoint image specifying unit 113 specifies a viewpoint image stored in association with the same shooting angle as the line-of-sight direction θ. For example, assuming that the line-of-sight direction θ = 30 degrees, the viewpoint image stored in association with the shooting angle 30 degrees is specified from the multi-viewpoint image for the object O shown in FIG.

  When there is no shooting angle that matches the line-of-sight direction θ, the viewpoint image specifying unit 113 selects one of the shooting angles closest to the line-of-sight direction θ and specifies the image data associated with the shooting angle. It shall be.

  Returning to FIG. 5, the image adjustment unit 114 reads the viewpoint image specified by the viewpoint image specifying unit 113 from the storage unit 15, and the objects included in the viewpoint image when the viewpoint image is displayed on the display unit 16. Image processing is performed to bring the appearance of the image closer to the state of the original object. Hereinafter, the operation of the image adjustment unit 114 will be described with reference to FIGS.

  FIG. 8 is a diagram showing an example of the viewpoint image displayed on the display unit 16, and shows the state (reference position) of the spherical object O ′ viewed from the front position of the image display device 100. Here, for example, when the image display device 100 is rotated to the right by a predetermined angle θ around the Y axis, the viewpoint image corresponding to this inclination angle is specified by the control of the viewpoint image specifying unit 113 described above. become.

  At this time, when the viewpoint image data specified by the viewpoint image specifying unit 113 is directly displayed on the display unit 16, the display surface of the display unit 16 is diagonally opposed to the user. 'Appears on the retina of the user as a distorted image as shown in FIG.

  Here, FIG. 9 is a diagram for explaining how the viewpoint image looks. As shown in FIG. 9, when the display unit 16 is disposed obliquely opposite the user, the originally spherical object O ′ is degenerated in the lateral direction (X-axis direction) on the user's retina, In addition, the image is projected in a state extending in the vertical direction (Y-axis direction).

  Therefore, in the image adjustment unit 114, the mapping of the display surface of the display unit 16 determined by the tilt angle detected by the tilt sensor 14 in the viewpoint direction is the same size as the mapping of the display surface in the front direction (Z-axis direction). Alternatively, by adjusting the size of the viewpoint image specified by the viewpoint image specifying unit 113 so as to have the same shape, the appearance of the image of the object O ′ displayed on the user's retina is similar to the state at the time of shooting. Adjust.

Specifically, when the inclination angle around the Y axis detected by the inclination sensor 14 is θ, the image adjustment unit 114 sets the size of the viewpoint image in the horizontal direction (X axis direction in the drawing) to (cos θ) ⁻¹ times. Convert the size to display in. Further, since the rate of change is small with respect to the vertical direction of the viewpoint image (Y-axis direction in the figure), it can be ignored, but by performing the following size conversion, the appearance of the object O ′ can be changed. It can be closer to the shape at the time of shooting.

When the vertical size of the display unit 16 is 2y, the horizontal size is 2x, and the visual distance between the assumed viewpoint position of the user and the display unit 16 is L, the display unit 16 is positioned on the front side of the left and right ends. With respect to the vertical size of the viewpoint image data displayed at the end portion (right end portion in FIG. 9), the size is converted so as to be displayed at the magnification represented by the following formula (1).
tan ^-1 (y / L) / tan ^-1 {y / (L-xsinθ)} (1)

In addition, the vertical size of the viewpoint image data displayed at the end on the depth side (the left end in FIG. 9) of the left and right ends of the display unit 16 is displayed at a magnification represented by the following formula (2). Convert the size to do.
tan ^-1 (y / L) / tan ^-1 {y / (L + xsinθ)} (2)

  Note that the vertical size of the viewpoint image data displayed between the left and right ends of the display unit 16 is also adjusted at a ratio corresponding to the distance from the left and right ends.

  FIG. 10 is a diagram corresponding to FIG. 9, and shows a display state on the display unit 16 of the viewpoint image whose size has been adjusted by the image adjustment unit 114. As shown in FIG. 10, as in FIG. 9, the display surface of the display unit 16 is diagonally opposed to the user, but the shape of the object O ′ of the viewpoint image displayed on the display unit 16 is As in FIG. 8, the original spherical shape is maintained.

  As described above, the image adjustment unit 114 adjusts the size of the viewpoint image in accordance with the inclination angle detected by the inclination sensor 14, so that the appearance of the object when the viewpoint image is displayed on the display unit 16. Approach the state of the original object. Thereby, the user can observe the object included in the viewpoint image in a state substantially equivalent to that at the time of photographing the object.

  In the above description, the method for adjusting the size of the rotation around the Y axis has been described. However, the size adjustment is performed similarly for the rotations around the other axes.

  FIG. 11 is a flowchart illustrating a procedure of image display processing related to display of a multi-viewpoint image. First, when a multi-viewpoint image for a specific object is selected via the operation unit 17, the selection receiving unit 111 sets the multi-viewpoint image as a display target (step S11).

  Subsequently, the display control unit 112 displays, on the display unit 16, the viewpoint image associated with the reference position (shooting angle 0 degree) among the viewpoint images included in the multi-viewpoint image set as the display target by the selection receiving unit 111. Display (step S12). In the present embodiment, the parallax image that is displayed first after receiving the selection operation is the reference position. However, the present invention is not limited to this.

  Next, the viewpoint image specifying unit 113 determines the user's line-of-sight direction based on the tilt angle of the image display device 100 input from the tilt sensor 14, and the viewpoint image corresponding to this line-of-sight direction is set as a display target. The multi-viewpoint image is specified (step S13).

  When the image adjustment unit 114 reads the viewpoint image specified in step S13 from the storage unit 15, the inclination angle input from the inclination sensor 14 is used to bring the appearance of the object included in the viewpoint image closer to the original shape. Accordingly, the image size of the viewpoint image is adjusted (step S14). Then, the display control unit 112 displays the viewpoint image subjected to the size adjustment process by the image adjustment unit 114 on the display unit 16 (step S15).

  Next, the selection receiving unit 111 determines whether or not an instruction to end the display of the multi-viewpoint image is input via the operation unit 17, and when it is determined that the instruction is not input (step S16; No) ), The process returns to step S13 again. Further, when it is determined that the end of display has been instructed (step S16; Yes), this process ends.

  When the image display device 100 is continuously tilted by the user during the above image display processing, parallax images corresponding to the respective tilt angles are continuously displayed by the loop processing of steps S13 to S16 described above. become. At this time, since the user feels the depth of the object displayed on the display unit 16 by the action of motion parallax, the user can perceive the object as a three-dimensional image.

  In addition, the fact that an object can be displayed three-dimensionally can present more information about the object to the user than an image that is displayed in one plane. For example, by using the image display device 100 when introducing a menu at a restaurant, in addition to being able to properly convey information, an effect of inviting appetite can be expected because a sense of realness can be perceived more.

  Further, by applying the technology of the present embodiment to an apparatus having a photographing function such as a digital camera or a mobile phone, a stereoscopic image (parallax image) with a stereoscopic effect can be displayed, and the original of the stereoscopic image can be displayed. It is also possible to take a multi-viewpoint image that is obtained by the above-described acquisition method or the like. Therefore, since acquisition and display of multi-viewpoint images can be easily performed, added value can be given to information such as conventional photographs and moving images.

  As described above, according to the present embodiment, the viewpoint direction of the user is determined based on the inclination of the image display device 100, and the viewpoint image of the shooting angle corresponding to the viewpoint direction is displayed on the display unit 16. Since it can be perceived as a stereoscopic image by the action of motion parallax, the user can perceive a stereoscopic effect with a simple configuration. In addition, since no special apparatus is used, it is relatively easy to divert existing technology, and development and manufacturing costs can be reduced. In addition, since the user of the image display apparatus 100 can omit work such as wearing dedicated glasses, user convenience can be achieved.

  Further, by adjusting the size of the viewpoint image to be displayed according to the tilt of the image display device 100, the appearance of the target object when the viewpoint image is displayed on the display unit 16 is abbreviated as when photographing. Since it can be set as the equivalent state, the real feeling of a target object can be improved.

  The embodiment of the present invention has been described above, but the present invention is not limited to this, and various modifications, substitutions, additions, and the like are possible without departing from the spirit of the present invention.

  Note that the program according to the above embodiment is provided by being incorporated in the ROM 12 or the storage unit 15 in advance. However, the present invention is not limited to this, and a CD-ROM, flexible file in an installable format or an executable format file. You may comprise so that it may record and provide on computer-readable recording media, such as a disk (FD), CD-R, DVD (Digital Versatile Disk). Furthermore, the recording medium is not limited to a medium independent of a computer or an embedded system, but also includes a recording medium in which a program transmitted via a LAN or the Internet is downloaded and stored or temporarily stored.

  Further, the program according to the above embodiment may be provided by being stored on a computer connected to a network such as the Internet and downloaded via the network, and provided or distributed via the network such as the Internet. You may comprise as follows.

It is the figure which showed an example of the external appearance structure of an image display apparatus. FIG. 2 is a block diagram illustrating an example of a hardware configuration of the image display device illustrated in FIG. 1. It is a figure for demonstrating the acquisition method of a multiview image. It is a figure for demonstrating the acquisition method of a multiview image. It is the block diagram which showed the functional structure which concerns on the display of a multiview image. It is a figure for demonstrating operation | movement of the viewpoint image specific part shown in FIG. It is a figure for demonstrating operation | movement of the viewpoint image specific part shown in FIG. It is the figure which showed an example of the viewpoint image displayed on the display part. It is a figure for demonstrating how a viewpoint image looks. It is a figure for demonstrating the appearance of viewpoint image data after size adjustment is performed. It is the flowchart which showed the procedure of the image display process.

Explanation of symbols

100 Image display device 11 Processor 12 ROM
13 RAM
Reference Signs List 14 tilt sensor 15 storage unit 16 display unit 17 operation unit 18 bus 111 selection reception unit 112 display control unit 113 viewpoint image specifying unit 114 image adjustment unit

Claims (6)

An image display device comprising a display means,
Display control means for displaying on the display means an image photographed from one photographing angle among a plurality of images photographed from a plurality of different photographing angles with respect to the object to be displayed;
Detecting means for detecting an inclination of the image display device;
Specifying means for determining a viewpoint direction of a user operating the image display device from the inclination detected by the detecting means, and specifying an image shot from a shooting angle corresponding to the viewpoint direction from the plurality of images;
Adjusting means for adjusting the size of the image specified by the specifying means in accordance with the inclination detected by the detecting means;
With
The display control means displays the image processed by the adjusting means on the display means.   The adjusting means adjusts the size of the image specified by the specifying means so that the mapping of the display surface of the display means in the viewpoint direction has the same size or the same shape as the mapping of the display surface in the front direction. The image display device according to claim 1, wherein the image display device is adjusted.   The image display device according to claim 1, wherein the plurality of images are taken at positions on a circumference or a sphere centered on the object. A selection receiving means for receiving selection of an object to be displayed;
The image display device according to any one of claims 1 to 3, wherein the display control unit displays an image of an object whose selection has been received by the selection reception unit on the display unit. An image display method executed by an image display device including a display unit,
A display control step in which the display control means displays, on the display means, an image photographed from one photographing angle among a plurality of images photographed from a plurality of mutually different photographing angles with respect to an object to be displayed; ,
A detecting step for detecting the inclination of the image display device;
A specifying unit determines a viewpoint direction of a user who operates the image display device from the inclination detected in the detection step, and specifies an image shot from a shooting angle corresponding to the viewpoint direction from the plurality of images. Specific process,
An adjusting step for adjusting the size of the image specified in the specifying step according to the inclination detected in the detecting step;
Including
In the display control step, the image processed in the adjustment step is displayed on the display means. A computer of an image display device provided with a display means,
Display control means for displaying on the display means an image photographed from one photographing angle among a plurality of images photographed from a plurality of different photographing angles with respect to the object to be displayed;
Detecting means for detecting an inclination of the image display device;
Specifying means for determining a viewpoint direction of a user operating the image display device from the inclination detected by the detecting means, and specifying an image shot from a shooting angle corresponding to the viewpoint direction from the plurality of images;
Adjusting means for adjusting the size of the image specified by the specifying means according to the inclination detected by the detecting means;
To function,
The display control unit displays an image processed by the adjustment unit on the display unit.

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