JP2016057760A - Display device, projection device, display method, and display program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device, projection device, display method, and display program with which the direction of an image to be displayed can be appropriately changed while a user is unaware of the change.SOLUTION: A display device 1 includes a central control part 120 that has a function as a detection part that detects an object present within a detection range corresponding to a display range of an image, a function as a determination part that determines the direction of visibility of the detected object, a function as a decision part that decides the direction to display the image according to the direction of visibility determined by the determination part, and a function as a display control part that displays an image in the display range according to the display direction decided by the decision part.SELECTED DRAWING: Figure 1

Description

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

  In recent years, display devices capable of displaying an image on a desk, such as a projector capable of desktop projection, have been proposed. By using such a display device, a person sitting around the desk can view a display image without facing his face in a specific direction such as a wall surface. On the other hand, in such a display device, the viewing direction of the image differs depending on the sitting position. On the other hand, the image projection apparatus of Patent Document 1 changes the display direction of the menu image displayed on the desk according to the insertion direction of the hand on the desk.

JP 2009-64109 A

  In Patent Document 1, in order to change the display direction of the menu screen, it is necessary to cause the user to insert a hand on the desk.

  The present invention has been made in view of the above circumstances, and provides a display device, a projection device, a display method, and a display program that make it easy to see by appropriately changing the orientation of a displayed image without being conscious of the user. The purpose is to provide.

  In order to achieve the above object, a display device according to a first aspect of the present invention includes a detection unit that detects an object existing in a detection range corresponding to a display range of an image, and the detected object. A determination unit that determines a viewing direction; a determination unit that determines a display direction of the image according to the viewing direction determined by the determination unit; and the image in the display range according to the display direction determined by the determination unit. And a display control unit for displaying.

  In order to achieve the above object, a projection apparatus according to a second aspect of the present invention includes a detection unit that detects an object that exists in a detection range corresponding to a projection range of an image, and the detected object. A determination unit that determines a viewing direction; a determination unit that determines a projection direction of the image according to the viewing direction determined by the determination unit; and the image in the projection range according to the projection direction determined by the determination unit. A projection control unit for projecting.

  In order to achieve the above object, the display method according to the third aspect of the present invention is such that the detection unit detects an object existing in the detection range corresponding to the display range of the image, and the determination unit Determining the viewing direction of the detected object; determining the display direction of the image according to the viewing direction determined by the determining unit; and determining by the determining unit Displaying the image in the display range according to a display direction.

  In order to achieve the above object, a display program according to a fourth aspect of the present invention is configured to detect an object existing in a detection range corresponding to a display range of an image by a detection unit, Determining the viewing direction of the detected object; determining the display direction of the image according to the viewing direction determined by the determining unit; and determining by the determining unit Causing the computer to display the image in the display range according to a display direction.

  According to the present invention, it is possible to provide a display device, a projection device, a display method, and a display program that make it easy to view by appropriately changing the orientation of a displayed image without being conscious of the user.

It is a figure which shows the outline | summary of the display apparatus which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the projection apparatus as an example of a display apparatus. It is a flowchart which shows operation | movement of a projection apparatus. It is the figure shown about determination of direction of a projection image. It is the figure shown about determination of the position of a projection range. It is the figure shown about determination of the size of a projection range. It is the figure shown about determination of the layout of a projection image.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing an overview of a display device 1 according to the present embodiment. As shown in FIG. 1, the display device 1 in the present embodiment is configured to display an image in a predetermined display range on a plane such as a desk 2 placed in a conference room. An example display device 1 is a projection device that is placed on a desk 2 and displays an image by projecting an image toward a projection range A1 of the desk 2.

The display device 1 has a sensor 12. The sensor 12 detects an object existing in the detection range A2 set corresponding to the projection range A1. The detection range A2 preferably includes at least the projection range A1, and more preferably includes the entire range in which the image on the desk 2 can be projected. The object existing in the detection range A2 is, for example, a printed material 3 on which characters and images having directionality are written. The sensor 12 is an image sensor that acquires an image within the detection range A2, for example. The display device 1 detects the printed matter within the detection range A2 from the image acquired by the sensor 12. And the visual recognition direction of the printed matter 3 is discriminate | determined, and the direction etc. of the image 4 which should be projected on projection range A1 are changed so that it may match the direction (control). Hereinafter, an example in which the printed material 3 is detected as an object by image recognition will be described. However, the object whose visual orientation can be determined is not necessarily the printed material 3. Further, the detection method by the sensor 12 is not particularly limited.
In addition, in FIG. 1 and subsequent drawings, the direction of the arrow of an arrow represents that it is upward. In FIG. 1, the viewing direction of the printed matter matches the projection direction.

  FIG. 2 is a block diagram illustrating a configuration of a projection device as an example of the display device 1. The projection apparatus 100 includes an input unit 102, an image conversion unit 104, a light source unit 106, a total reflection mirror 108, a micromirror element 110, a projection lens unit 112, a projection processing unit 114, and an audio processing unit 116. A speaker 118, a central control unit 120, a program memory 122, a main memory 124, an operation unit 126, an image sensor 128, and a system bus 130.

  For example, an analog image signal or a digital image signal is input to the input unit 102. When an analog image signal is input, the input unit 102 converts the input analog image signal of various standards into a digital image signal. An analog audio signal or a digital audio signal is input to the input unit 102. The input unit 102 outputs the input audio signal to the audio processing unit 116.

  The image conversion unit 104 is also referred to as a scaler. The image conversion unit 104 is connected to the system bus 130. The image conversion unit 104 converts the image data input via the input unit 102 into image data having a predetermined format suitable for projection, and transmits the converted data to the projection processing unit 114. If necessary, the image conversion unit 104 transmits image data on which symbols indicating various operation states for On Screen Display (OSD) are superimposed to the projection processing unit 114 as processed image data.

  The light source unit 106 emits light of a plurality of colors including primary color light of red (R), green (G), and blue (B) under the control of the projection processing unit 114. Here, the light source unit 106 is configured to sequentially emit a plurality of colors in a time division manner. The light emitted from the light source unit 106 is totally reflected by the total reflection mirror 108 and enters the micromirror element (display element) 110.

  The micromirror element 110 includes a plurality of micromirrors arranged in an array, such as a digital micromirror device (DMD; registered trademark). Each micromirror is turned on / off at high speed to reflect the light irradiated from the light source unit 106 toward the light incident / exit surface of the micromirror element 110 toward the projection lens unit 112, or to the projection lens unit 112. Deviate from the direction. On the light incident / exit surface of the micromirror element 110, for example, WXGA (Wide eXtended Graphics Array) (horizontal 1280 pixels × vertical 800 pixels) is arranged. The micromirror element 110 forms an image with WXGA resolution, for example, by reflection at each micromirror. Thus, the micromirror element 110 functions as a spatial light modulation element.

  The projection lens unit 112 adjusts the light guided from the micromirror element 110 to light that is projected onto a projection object such as the desk 2 or a screen (not shown). Therefore, the optical image formed by the reflected light from the micromirror element 110 is projected onto the screen, for example, via the projection lens unit 112. Note that the projection range by the projection lens unit 112 is the projection range A1 shown in FIG.

  The projection processing unit 114 is connected to the system bus 130 and drives the micromirror element 110 so that the image represented by the image data is displayed according to the image data transmitted from the image conversion unit 104. That is, the projection processing unit 114 turns each micro mirror of the micro mirror element 110 on / off. Here, the projection processing unit 114 drives the micromirror element 110 in a time-sharing manner at a high speed. The number of divisions per unit time is a number obtained by multiplying a frame rate according to a predetermined format, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations. In addition, the projection processing unit 114 controls the operation of the light source unit 106 in synchronization with the operation of the micromirror element 110. That is, the projection processing unit 114 controls the operation of the light source unit 106 so as to time-divide each frame and sequentially emit light of all color components for each frame.

  The audio processing unit 116 is connected to the system bus 130 and includes a sound source circuit such as a PCM sound source. The sound processing unit 116 drives the speaker 118 to emit sound based on analog sound data input from the input unit 102 or based on a signal obtained by analogizing digital sound data given during the projection operation. Further, the sound processing unit 116 generates a beep sound or the like as necessary. The speaker 118 is a general speaker that emits sound based on a signal input from the sound processing unit 116.

  The central control unit 120 is connected to the system bus 130 and controls operations of the image conversion unit 104, the projection processing unit 114, the sound processing unit 116, and the like. The central control unit 120 is connected to the program memory 122 and the main memory 124. The program memory 122 is composed of an electrically rewritable nonvolatile memory. The program memory 122 stores an operation program executed by the central control unit 120 and various fixed data. The main memory 124 is composed of, for example, an SRAM. The main memory 124 functions as a work memory for the central control unit 120.

  In addition, the central control unit 120 of this embodiment is configured by, for example, a CPU or an ASIC, and has functions as a detection unit 1201, a determination unit 1202, a determination unit 1203, and a display control unit 1204. The function as the detection unit 1201 is a function of detecting the printed material 3 placed on the desk 2 based on image data obtained by imaging by the imaging sensor 128. The function as the determination unit 1202 is a function of determining the viewing direction of the printed material 3. The function as the determination unit 1203 is a function of determining the orientation of the image to be projected on the desk 2 in accordance with the determined viewing orientation. The function as the display control unit 1204 is a function of controlling (matching or rotating) the orientation of the image to be projected in the determined orientation.

  The operation unit 126 outputs a key operation signal generated when the user operates various keys to the central control unit 120. The projection apparatus 100 has a desktop projection mode for projecting an image onto the desk 2 and a normal projection mode for projecting an image onto a screen or the like as image projection modes. The image projection mode can be changed, for example, by the operation of the operation unit 126 by the user.

  The imaging sensor 128 is an imaging sensor such as a CMOS sensor that functions as the sensor 12, and images the detection range A2 to acquire an image of the detection range A2, that is, an image on the desk 2. Image data obtained by imaging by the imaging sensor 128 is stored in the main memory 124, for example.

  Next, the operation of the projection apparatus 100 as the display apparatus 1 according to the present embodiment will be described. FIG. 3 is a flowchart showing the operation of the projection apparatus 100. The process of FIG. 3 is started when the power of the projection apparatus 100 is turned on, for example.

  In step S101, the central control unit 120 of the projection apparatus 100 determines whether or not the image projection mode is the desktop projection mode. The image projection mode can be determined from the operation state of the operation unit 126. For example, in the case of the projection apparatus 100 configured to be able to change the direction of the projection lens unit 112 for desktop projection, the image projection mode can be determined from the direction of the projection lens unit 112. In this case, for example, if the projection lens unit 112 faces downward, it is determined that the desktop projection mode is set.

  If it is determined in step S101 that the image projection mode is not the desktop projection mode, that is, the normal projection mode, the process proceeds to step S102. In step S102, the central control unit 120 performs normal projection mode processing. The normal projection mode process will be briefly described. In the normal projection mode, on / off control of the micromirror element 110 by the projection processing unit 114 according to image data based on the image signal input to the input unit 102, for example, when the user instructs to project an image. Is done. The light emitted from the light source unit 106 is totally reflected by the total reflection mirror 108. The light totally reflected by the total reflection mirror 108 is emitted toward the projection lens unit 112 when the micromirror element 110 is turned on, and is not emitted toward the projection lens unit 112 when the micromirror element 110 is turned off. When light is emitted toward the projection lens unit 112, the light image formed by the reflected light from the micromirror element 110 is projected onto the screen, for example, via the projection lens unit 112. As a result, an image based on the image signal input to the input unit 102 is projected onto a screen or the like. After such projection, the process proceeds to step S112.

  If it is determined in step S101 that the image projection mode is the desktop projection mode, the central control unit 120 performs the desktop projection mode process. At this time, in step S103, the central control unit 120 determines whether or not the user has instructed image projection. If it is determined in step S103 that an image projection instruction has not been given, the process proceeds to step S112.

  If it is determined in step S103 that the user has instructed image projection, the process proceeds to step S104. In step S104, the central control unit 120 causes the imaging sensor 128 to perform imaging of the detection range A2. In step S105, the central control unit 120 acquires image data stored in the main memory 124 as a result of imaging by the imaging sensor 128, and detects the printed matter 3 placed on the desk 2 from the acquired image data. . The printed material 3 is detected, for example, by comparing image data acquired by the image sensor 128 with image data used for projection. In the case of this method, the central control unit 120 detects a region including characters, images, and the like that are not included in the image data used for projection in the image data acquired by the imaging sensor 128 as the printed material 3. When the printed material 3 is detected, information indicating the position of the printed material 3 is stored in the main memory 124, for example. The method for detecting the printed matter 3 is not limited to such a method.

  In step S106, the central control unit 120 determines whether or not the printed material 3 is detected. If it is determined in step S106 that the printed material 3 has not been detected, the process proceeds to step S110.

  If it is determined in step S106 that the printed material 3 has been detected, the process proceeds to step S107. In step S <b> 107, the central control unit 120 determines the viewing direction of the printed material 3. If the printed material 3 includes characters, the central control unit 120 sets the direction of the characters as the viewing direction of the printed material 3. If the printed material 3 does not include characters, the central control unit 120 determines the viewing direction of the printed material 3 from the orientation of the image. For example, if the image shows a person, the central control unit 120 determines the viewing direction of the image using a face detection technique or the like. In addition, the central control unit 120 may be configured to determine the viewing direction of the image by detecting a reference line in the image such as a horizon. That is, the method for determining the viewing direction of the printed material 3 is not limited to a specific method.

  In step S <b> 108, the central control unit 120 determines whether the visual orientation of the printed material 3 has been determined. If it is determined in step S108 that the viewing direction of the printed matter 3 cannot be determined, the process proceeds to step S110.

  If it is determined in step S108 that the viewing direction of the printed matter 3 has been determined, the process proceeds to step S109. In step S109, the central control unit 120 determines the direction of the image to be projected and the projection range, and controls (matches and rotates) the direction of the image to the determined direction.

FIG. 4 is a diagram illustrating determination of the orientation of the projection image. The direction of the projected image is determined so as to coincide with the viewing direction of the printed material 3, for example. For example, as shown in FIG. 4A, when the viewing direction of the printed material 3 is reversed by 180 degrees with respect to the original projection direction of the projection image 4, as shown in FIG. The projection direction of the projection image 4 is inverted by 180 degrees. That is, the image data input from the input unit 102 is input to the projection processing unit 114 in a state where the direction is inverted by 180 degrees.
Although not shown, for example, when the viewing direction of the printed material 3 is the right upward, the projection direction of the projected image 4 is also rotated 90 degrees so that the right is upward.

  FIG. 5 is a diagram illustrating determination of the position of the projection range. The projection range is determined so that the printed product 3 is out of the range. For example, as shown in FIG. 5A, when the printed material 3 is included in the current projected range A1, the position of the projected range A1 includes the printed material 3 as shown in FIG. It is shifted so that there is no. In order to shift the projection range A1, for example, the direction of the projection lens unit 112 is changed. Here, an example in which the projection range A1 is optically shifted has been shown, but by substantially shifting the display position of the image data by electrical geometric correction (correction that shifts the main screen relative to the background when there is a margin in the background), Alternatively, the projection range A1 may be shifted.

  Returning to FIG. 3, in step S <b> 110, the central control unit 120 starts the desktop projection by the projection processing unit 114. The desktop projection is basically performed in the same manner as the projection in the normal projection mode processing. However, when the orientation or projection range of the projection image is determined and controlled in step S109, that is, when the printed material 3 is on the desk 2, the orientation or projection range of the projection image determined and controlled in step S109. According to the projection.

  In step S111, the central control unit 120 determines whether or not the user has instructed the end of image projection. If it is determined in step S111 that the end of image projection has not been instructed, the process returns to step S104. In this case, processing after detection of the printed matter 3 is performed.

  If it is determined in step S111 that the user has instructed the end of image projection, the process proceeds to step S112. In step S112, the central control unit 120 determines whether the power of the projection apparatus 100 is turned off. If it is determined in step S112 that the power of the projection apparatus 100 is not turned off, the process returns to step S101. If it is determined in step S112 that the power of the projection apparatus 100 has been turned off, the processing in FIG. 3 is terminated.

  As described above, in the present embodiment, the orientation of the image projected on the desk 2 is determined according to the viewing orientation of the printed matter 3 that is an object having information indicating the directionality on the desk 2. Thereby, an image is projected in an appropriate direction for the user without making the user aware of it.

  In the present embodiment, the projection range A1 is set so that the projection image is not hidden by the printed matter 3 that is an object having information indicating the directionality on the desk 2. Thereby, the user can visually recognize the projection image appropriately.

[Modification]
Hereinafter, modifications of the present embodiment will be described.
First, in the above-described embodiment, as an example of the display device 1, a projection device that is placed on the desk 2 and displays an image by projecting the image toward the projection range A1 of the desk 2 is shown. However, this is an example. For example, as the display device 1, a projection device that hangs on the ceiling and displays an image by projecting the image toward the projection range A1 of the desk 2 may be used. Further, the display device 1 may not be a projection device. For example, the display device 1 may be a display device that displays an image from the back surface of the desk 2. In this case, the sensor 12 is provided so as to be able to detect an image in the detection range A2 of the desk 2, for example, separated from the main body of the display device 1.

In the above-described embodiment, the present invention has been described with the configuration using the micromirror element as the display element of the projection apparatus, but the present invention is not limited thereto.
Needless to say, the present invention can be similarly applied to a liquid crystal projection apparatus using, for example, a reflective or transmissive liquid crystal element as the display element of the projection apparatus.

  In the above-described embodiment, the viewing direction of the printed material 3 and the projection direction of the projection image are made to coincide with each other. The relationship between the viewing direction of the printed matter 3 and the projection direction of the projected image can be set as appropriate. For example, the central control unit 120 may be configured so that the viewing direction of the printed matter 3 and the projection direction of the projection image are opposite to each other. Further, it may be changeable according to a user setting.

  In the above-described embodiment, the print 3 is always detected during image projection in the desktop projection mode. On the other hand, the printed material 3 may be detected every predetermined time, and the projection direction may be changed every predetermined time. Thereby, it is possible to prevent the projection direction of the projection image from being changed too frequently.

In the above-described embodiment, an example in which the position of the projection range A1 is shifted in order to perform projection so that the projection image is not hidden by the printed matter 3 is shown. On the other hand, the size of the projection range A1 may be narrowed as shown in FIG. Further, the substantial projection range A1 may be narrowed by reducing the image data by electrical geometric correction. Further, the reduction and the position shift with respect to the background described above may be used in combination.
Further, by dividing the characters and images included in the projected image in units of areas in advance, the projected image can be projected so as not to be hidden by the printed matter 3 by changing the layout of the projected image. For example, a character area A in which a text having a certain connection is recorded, an image area B in which a certain visible image is recorded, and a character area in which a text having a certain connection is recorded Assume that C is a blank area D in which neither characters nor images are written, and the position information of the character area A, the image area B, the character area C, and the blank area D is known. At this time, when the character area A is hidden by the printed matter 3 as shown in FIG. 7A, the character area A is shifted by shifting the position of the character area A as shown in FIG. It is possible to prevent A from being hidden by the printed material 3.

  In the above-described embodiment, an example in which the display direction is controlled every 90 degrees, such as inversion, is shown. However, the display direction may be controlled more finely.

  Although the present invention has been described based on the above embodiment, the present invention is not limited to the above-described embodiment, and various modifications and applications are naturally possible within the scope of the gist of the present invention. Further, in the description of each operation flowchart described above, the operation is described using “first”, “next”, and the like for convenience, but this does not mean that it is essential to perform the operations in this order. Absent.

  In addition, each processing method performed by the imaging apparatus in the above-described embodiment, that is, the processing illustrated in each flowchart is stored as a program that can be executed by the central control unit 120. This program is stored and distributed in a storage medium of an external storage device such as a memory card (ROM card, RAM card, etc.), magnetic disk (floppy disk, hard disk, etc.), optical disk (CD-ROM, DVD, etc.), semiconductor memory, etc. can do. The central control unit 120 reads the program stored in the storage medium of the external storage device, and the operation is controlled by the read program, so that the above-described processing can be executed.

  Further, the above-described embodiments include various stages of the invention, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some configuration requirements are deleted from all the configuration requirements shown in the embodiment, the above-described problem can be solved, and this configuration requirement is deleted when the above-described effects can be obtained. The configuration can also be extracted as an invention.

Here, the summary of the present invention is summarized as follows.
[1] A detection unit that detects an object existing in a detection range corresponding to a display range of an image;
A discriminator for discriminating the viewing direction of the detected object;
A determination unit that determines a display direction of the image according to the viewing direction determined by the determination unit;
A display control unit for displaying the image in the display range according to the display orientation determined by the determination unit;
A display device comprising:
[2] The object is a printed matter including characters,
The display device according to [1], wherein the determination unit determines the viewing direction according to a direction of a character printed on the printed matter.
[3] The object is a printed matter including an image having directionality,
The display device according to [1] or [2], wherein the determination unit determines the viewing direction according to a direction of an image printed on the printed matter.
[4] The determination unit further determines a display size of the image so as not to overlap the object,
The display device according to any one of [1] to [3], wherein the display control unit displays the image in the display range according to a display size determined by the determination unit.
[5] The determination unit further determines a display position of the image so as not to overlap the object,
The display device according to any one of [1] to [4], wherein the display control unit displays the image at a display position determined by the determination unit.
[6] The determining unit further determines a layout of the image so as not to overlap the object,
The display device according to any one of [1] to [5], wherein the display control unit displays the image according to a layout determined by the determination unit.
[7] A detection unit that detects an object existing in a detection range corresponding to the projection range of the image;
A discriminator for discriminating the viewing direction of the detected object;
A determination unit that determines a projection direction of the image according to the viewing direction determined by the determination unit;
A projection control unit that projects the image on the projection range according to the projection direction determined by the determination unit;
A projection apparatus comprising:
[8] The detection unit detects an object existing in the detection range corresponding to the display range of the image;
Determining a visual recognition direction of the detected object by a determination unit;
Determining a display direction of the image according to the viewing direction determined by the determination unit by the determination unit;
Displaying the image in the display range according to the display orientation determined by the determination unit;
A display method comprising:
[9] The detection unit detects an object existing in the detection range corresponding to the display range of the image;
Determining a visual recognition direction of the detected object by a determination unit;
Determining a display direction of the image according to the viewing direction determined by the determination unit by the determination unit;
Displaying the image in the display range according to the display orientation determined by the determination unit;
Display program to make the computer execute.

  DESCRIPTION OF SYMBOLS 1 Display apparatus, 2 desks, 3 printed matter, 4 Projected image, 12 Sensor, 100 Projection apparatus, 102 Input part, 104 Image conversion part, 106 Light source part, 108 Total reflection mirror, 110 Micromirror element, 112 Projection lens part, 114 Projection processing unit, 116 sound processing unit, 118 speaker, 120 central control unit, 122 program memory, 124 main memory, 126 operation unit, 128 imaging sensor, 130 system bus, 1201 detection unit, 1202 discrimination unit, 1203 determination unit, 1204 Display control unit.

Claims (9)

A detection unit for detecting an object existing in a detection range corresponding to the display range of the image;
A discriminator for discriminating the viewing direction of the detected object;
A determination unit that determines a display direction of the image according to the viewing direction determined by the determination unit;
A display control unit for displaying the image in the display range according to the display orientation determined by the determination unit;
A display device comprising: The object is a printed matter including characters,
The display device according to claim 1, wherein the determination unit determines the viewing direction according to a direction of a character printed on the printed matter. The object is a printed matter including an image having directionality,
The display device according to claim 1, wherein the determination unit determines the viewing direction according to a direction of an image printed on the printed matter. The determination unit further determines the display size of the image so as not to overlap the object,
The display device according to claim 1, wherein the display control unit displays the image in the display range according to a display size determined by the determination unit. The determination unit further determines the display position of the image so as not to overlap the object,
The display device according to claim 1, wherein the display control unit displays the image at a display position determined by the determination unit. The determining unit further determines a layout of the image so as not to overlap the object,
The display device according to claim 1, wherein the display control unit displays the image according to a layout determined by the determination unit. A detection unit for detecting an object existing in a detection range corresponding to the projection range of the image;
A discriminator for discriminating the viewing direction of the detected object;
A determination unit that determines a projection direction of the image according to the viewing direction determined by the determination unit;
A projection control unit that projects the image on the projection range according to the projection direction determined by the determination unit;
A projection apparatus comprising: Detecting an object present in a detection range corresponding to the display range of the image by the detection unit;
Determining a visual recognition direction of the detected object by a determination unit;
Determining a display direction of the image according to the viewing direction determined by the determination unit by the determination unit;
Displaying the image in the display range according to the display orientation determined by the determination unit;
A display method comprising: Detecting an object present in a detection range corresponding to the display range of the image by the detection unit;
Determining a visual recognition direction of the detected object by a determination unit;
Determining a display direction of the image according to the viewing direction determined by the determination unit by the determination unit;
Displaying the image in the display range according to the display orientation determined by the determination unit;
Display program to make the computer execute.

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