JP2014197109A - Image display device, image display method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screen display device capable of reducing brightness of a screen without impairing user's visibility.SOLUTION: A game machine 1 comprises an image display device 2 having plural projectors 12a-12f for displaying a game image 101. A user focusing area AA is determined which a user focuses attention on in the game image 101. Control is performed, on the basis of a result of the determination, to differentiate between brightness of the user focusing area AA and brightness of a non-focusing area NA which is an area other than the user focusing area AA in the game image 101.

Description

  The present invention relates to an image display device or the like provided with display means for displaying a predetermined image.

  Image display devices that display images on a large screen are well known. As an example, a multi-projection system (see, for example, Patent Document 1) that projects images in a superimposed manner using a plurality of projectors, and a device that displays a large screen by arranging a plurality of liquid crystal display devices are known. There is also known an apparatus in which a screen is arranged around a user and an image is projected by a plurality of projectors (see, for example, Patent Document 2).

JP 2008-15502 A Japanese Patent Laid-Open No. 11-313983

  In an image display device that displays an image on a large screen, the amount of light for displaying an image increases as the display surface increases. For this reason, if the display surface becomes too bright, the screen tends to be difficult to see.

  Therefore, an object is to provide a screen display device or the like that can suppress the brightness of the screen without disturbing the visibility of the user.

  The image display apparatus according to the present invention includes a display unit (12) for displaying a predetermined image (101, 101A), and an attention area determination for determining a user attention area (AA, AA2) in which the user is paying attention in the image. A brightness of the user attention area and a brightness of a non-attention area (NA, NA2) other than the user attention area in the image based on the determination results of the means (34, 44) and the attention area determination means. Brightness control means (35, 45) for controlling to be differentiated.

  An image display method of the present invention is an image display method of an image display device (2) provided with display means (12) for displaying a predetermined image (101, 101A), and the user pays attention to the image within the image. Region of interest determination procedure (S14, S24) for determining the user attention region (AA, AA2), and the brightness of the user attention region and the user attention region in the image based on the determination result of the attention region determination means Brightness control procedures (S15, S25) for controlling the brightness of non-attention areas (NA, NA2) other than those to be differentiated.

  A computer program according to the present invention is a computer program to be executed by a computer device (31) of an image display device (2) provided with display means (12) for displaying a predetermined image (101, 101A). Based on the determination result of the attention area determination means (33, 34) for determining the user attention area in which the user is paying attention in the image and the attention area determination means, and the brightness of the user attention area, It is configured to function as brightness control means (35, 45) for controlling the brightness of non-attention areas (NA, NA2) other than the user attention area in the image to be differentiated.

  According to the present invention, the user attention area that the user is paying attention to is determined, and the brightness of the user attention area and the non-attention area in the displayed image is controlled based on the determination result. Since the brightness is controlled in the image depending on whether or not the user is paying attention, it is possible to reduce the brightness of the screen by darkening an area that hardly affects the visibility of the user.

  In one form of the image display device of the present invention, the image display device further includes image generation means (33) for generating the image by software processing, and the brightness control means is configured such that the user attention area is compared with the non-attention area. The brightness of the user attention area and the brightness of the non-attention area of the image generated by the image generation means may be controlled so as to be relatively bright. According to this, since the brightness is controlled so as to brighten the user attention area, the area that the user wants to see becomes bright and visibility is not hindered. In this embodiment, the brightness control unit may control the brightness of the non-attention area to be lower than that of the user attention area. Further, in this embodiment, the brightness control means may control the brightness of the non-attention area in a stepwise manner as the distance from the user attention area increases.

  In one embodiment of the image display device of the present invention, the image display device further comprises a motion detection means (13) for detecting the user's motion, wherein the attention area determination means is based on a detection result of the motion detection means. May be determined. According to this, since the brightness in the image can be controlled according to the user's operation, the brightness of the screen can be suppressed without hindering the visibility of the user.

  In the embodiment described above, the attention area determination unit may determine the user attention area based on the attention direction of the face to which the user faces that is detected by the motion detection unit. Further, the attention area determination unit may determine the user attention area based on the attention direction of the line of sight directed by the user detected by the motion detection unit.

  In a form in which a user attention area is determined based on a user's attention direction, the attention area determination means determines a region in a predetermined range based on the position (C) in the image corresponding to the attention direction as the user attention area May be. According to this, the position of interest in the image is determined from the user's action, and the user attention area is determined based on this position. Since the brightness in the image can be controlled according to the user's operation, the brightness of the screen can be suppressed without hindering the visibility of the user.

  In one form of the image display device of the present invention, the display means may display the image so as to surround the user. According to this, when the user sees the image displayed on the display means, a portion located outside the user's field of view is generated. With respect to such an image, the user attention area that the user is paying attention to is determined, and the brightness in the displayed image is controlled based on the determination result. Since the brightness is controlled in the image depending on whether or not the user is paying attention, it is possible to reduce the brightness of the screen by darkening an area that hardly affects the visibility of the user. In this embodiment, the display means divides the image into a plurality of partial images (P1 to P6), and displays each partial image on a screen provided so as to surround the user. It may be.

  In addition, in the above description, in order to make an understanding of this invention easy, the reference sign of the accompanying drawing was attached in parenthesis, but this invention is not limited to the form of illustration by it.

  As described above, according to the present invention, the user attention area focused by the user is determined, and the brightness of the user attention area and the non-attention area in the displayed image is determined based on the determination result. Control. Since the brightness is controlled in the image depending on whether or not the user is paying attention, it is possible to reduce the brightness of the screen by darkening an area that hardly affects the visibility of the user.

The front view of the game machine to which the image display apparatus which concerns on the 1st form of this invention is applied. Sectional drawing along the II-II line | wire of FIG. Sectional drawing along the III-III line of FIG. The figure explaining the screen projected by each projector. The figure which showed an example of the game screen. The figure which showed an example of the game image explaining a user attention area. The functional block diagram in the control system of a game machine. The flowchart which shows the image generation process which a game control part performs. The flowchart which shows the brightness control process which a game control part performs. The figure which showed the other example of the game image. The figure which showed an example of the game image explaining the user attention area | region in a 2nd form. The functional block diagram in the control system of the game machine which concerns on the 2nd form of this invention. The flowchart which shows the brightness control process which a game control part performs.

(First form)
FIG. 1 is a front view of a game machine to which an image display device according to a first embodiment of the present invention is applied. The game machine 1 is configured as a commercial (business) game machine that allows a user to play a game within a range corresponding to the play fee in exchange for payment of a predetermined play fee. This type of game machine 1 may be called an arcade game machine. The game machine 1 is installed in a commercial facility such as a store for the main purpose of making a large number of users play a game repeatedly to increase profits. The game machine 1 includes a screen unit SC that displays a game screen 100 and a seat unit SE that a user is seated to operate a game.

  FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a sectional view taken along line III-III in FIG. The screen unit SC includes a screen 11 disposed so as to surround the periphery of the seat unit SE, a plurality of projectors 12 that project the game screen 100 onto the screen 11, a motion detection sensor 13 that detects a user's face, An entrance / exit part 14 through which a user enters and exits is provided. The screen 11 is configured by arranging a plurality of spherically formed panels 11 a in a screen unit SC excluding the entrance / exit portion 14. The screen 11 reaches the vicinity of the backrest portion of the seat 21 on which the user of the seat unit SE sits.

  The screen unit SC includes a first projector 12a and a second projector 12b that project an image on the front of the user with respect to the screen 11, a third projector 12c and a fourth projector 12d that project an image on the left side of the user, and a user. A total of six projectors 12 including a fifth projector 12e and a sixth projector 12f that project an image on the right side surface are installed. The game image 100 projected on the screen 11 is divided into a plurality of partial images (six in this embodiment), and the respective partial images are projected by the projectors 12a to 12f. Each of the projectors 12a to 12f is projected through the mirror 15. Hereinafter, the first projector 12a and the second projector 12b will be described as a representative. The plurality of projectors 12a to 12f correspond to display means and a plurality of display units.

  The first projector 12a is installed on the upper front part of the screen unit SC, and projects the first image P1 on the lower front part of the screen via the mirror 15. The shaded range shown in FIG. 2 is a range that can be displayed by the first projector 12a. Similarly, the second projector 12b is installed in the lower front part of the screen unit SC, and projects the second image P2 on the upper front part of the screen via the mirror 15. The first and second projectors 12 a and 12 b project a front image located in front of the screen 11.

  FIG. 4 is a diagram illustrating screens projected by the projectors 12a to 12f. In FIG. 4, for convenience of explanation, each of the screens sc <b> 1 to sc <b> 6 is represented as a plane, but is actually projected onto a spherical screen 11. The first screen 12 is formed by the first projector 12a projecting the first image P1 on the lower front portion of the sheet unit SE. The second screen 12 is formed by the second projector 12b projecting the second image P2 on the upper front part of the sheet unit SE. Similarly, when the third and fourth projectors 12c and 12d project the third image P3 and the fourth image P4 on the left side surface of the sheet unit SE, respectively, a third screen sc3 and a fourth screen sc4 are formed, respectively. The sixth projector 12e and 12f project the fifth image P5 and the sixth image P6 onto the right side surface of the sheet unit SE, thereby forming the fifth screen sc5 and the sixth screen sc6, respectively. Each screen sc1 to sc6 is projected with a part of the image superimposed on the adjacent screen. In FIG. 4, the range of the second screen sc2 is indicated by shading. Various known techniques may be used for such a multi-projection display in which images are projected in a superimposed manner using a plurality of projectors 12. In addition, when there is no need to distinguish each screen sc1-sc6, it may be called screen sc. Also, the images P may be referred to when the images P1 to P6 do not need to be distinguished from each other.

  The motion detection sensor 13 is provided in the center of the back side of the screen 11 and recognizes the user's face through three detection holes 13 a provided in the screen 11. The motion detection sensor 13 is provided with a color sensor, an infrared emitter, and an infrared depth sensor, and can recognize the direction of attention of the user by recognizing the direction of the user's face and the direction of the line of sight. As the motion detection sensor 13, for example, various known detection sensors such as KINECT (registered trademark) may be used. The doorway portion 14 is provided with a door (not shown) that can slide up and down, and can be closed during the user's game play.

  The seat unit SE includes a seat 21 on which a user is seated, a seat slide mechanism 22 that adjusts the position of the seat 21, an operation input unit 23 that inputs a game operation, a speaker unit 24, and a coin insertion unit 25. It has been. The seat 21 is provided with a vibration exciter 21a to improve the sense of presence during the game. The seat slide mechanism 22 is provided with a front lever 22a and a rear lever 22b for adjusting the position of the seat. By operating the levers 22a and 22b, the seat 21 can be moved in the front-rear direction to adjust the position. The front lever 22 a is provided on the assumption that the user operates while sitting on the seat 21. Further, the rear lever 22b is provided on the assumption that a moving space is secured when the user goes in and out. For this reason, the front lever 22a can be lifted up, and the rear lever 22b can be pressed down to release the lock of the seat 21 and slide the seat 21. A well-known technique may be used for the mechanism by which the sheet 21 slides.

  The operation input unit 23 is provided with an operation lever 23a, a liquid crystal display 23b, and a transparent touch panel 23c superimposed on the liquid crystal display 23b. The operation lever 23a is provided on both the left and right sides of the user and accepts user operations. The operation lever 23a is configured in an appropriate shape according to the characteristics of the game. Information on the game is displayed on the liquid crystal display 23b, and an appropriate operation such as selection of a game mode is accepted by the touch panel 23c. The speaker unit 24 is appropriately disposed around the seat 21.

  FIG. 5 is a diagram showing an example of the game screen 100. In the game machine 1, as an example, a shooting game is provided. On the game screen 100, the partial images displayed on the divided screens sc1 to sc6 are projected by the projectors 12a to 12f and displayed as the game image 101. In FIG. 5, as an example of the display range of each of the screens sc1 to sc6, the second screen sc2 is shaded and distinguished. When the motion detection sensor 13 provided facing the seat unit SE recognizes the face of the user and detects the face direction, the attention coordinate C on the game image 101 is determined from the attention direction. On the game image 101, an attack range AR of a predetermined size spreading concentrically around the attention coordinate C is shown to support the progress of the game.

  On the other hand, a predetermined range centered on the attention coordinate C is set as the user attention area AA. FIG. 6 is a diagram showing a game image 101 for explaining the user attention area AA. The user attention area AA is an area that extends from the attention coordinate C to the left and right within a predetermined range. When the user attention area AA is set, the other area of the game image 101 is set as the non-attention area NA. The brightness in the game image 101 is controlled so that the user attention area AA is relatively brighter than the non-attention area NA. You may adjust so that the brightness of the image in non-attention area NA may be reduced, and you may adjust so that the brightness of user attention area AA may be raised. Since the attention coordinate C moves on the game image 101 according to the movement of the user's face, the user attention area AA also moves according to the attention coordinate C. Since the non-attention area NA is an area away from the attention coordinate C and out of the user's field of view, even if the image is darkened, there is little influence on the progress of the game. Thereby, the overall brightness in the game machine 1 is suppressed, and an unclear image due to the reflection of the screen 11 can be prevented.

  FIG. 7 is a functional block diagram in the control system of the game machine 1. The game machine 1 is provided with a game control unit 31 and a storage unit 32. The game control unit 31 is a logical device realized by a combination of computer hardware (including a CPU and peripheral devices such as an internal storage device necessary for its operation) of the game machine 1 and software. The storage unit 32 is an external storage device realized by a storage unit such as a hard disk array. The storage unit 32 may be configured to hold all data on one storage unit, or may be configured to store a plurality of storage unit data in a distributed manner. Various data are stored in the storage unit 32. FIG. 7 shows play data 36, a game program 37, and image data 38. The play data 36 is data in which the play content of the game is stored so that the user can continue playing the game. The play data 36 is created for each user and recorded in association with the user identification information. The game program 37 is for executing a shooting game provided by the game machine 1. The image data 38 is data referred to for generating the game image 101, and image data such as a character and a background is recorded.

  The game control unit 31 includes an image generation unit 33 that generates the game image 101, an attention region determination unit 34 that determines the user attention region AA in the game image 101, and brightness control that controls the brightness of the game image 101. A portion 35 is provided. The image generation unit 33 generates a game image 101 corresponding to the progress of the game. The image data 38 is referred to when the game image 101 is generated. The attention area determination unit 34 determines the user attention area AA in the game image 101 generated by the image generation unit 33. When the user attention area AA is determined, the remaining area is set as the non-attention area NA. The brightness control unit 35 performs control so as to differentiate between the brightness of the user attention area AA and the brightness of the non-attention area NA. In addition, the projectors 12a to 12f, the motion detection sensor 13, the operation input unit 23, the speaker unit 24, and the coin insertion unit 25 are connected to the game control unit 31. The image display device 2 is a device that includes a game control unit 31, a plurality of projectors 12, and a motion detection sensor 13.

  FIG. 8 is a flowchart showing image generation processing executed by the game control unit 31. The image generation process is a process executed by the image generation unit 33 of the game control unit 31 and generates a game image 101 to be displayed on the game screen 100 by a software process. The game control unit 31 acquires image data 38 corresponding to the progress of the game based on the input signal from the operation input unit 23 (step S1). From the image data 38, data in which character and background settings necessary for drawing are recorded is acquired. The game control unit 31 generates the game image 101 with reference to the acquired image data 38 (step S2). A well-known technique may be used to generate the game image 101. Then, the game control unit 31 divides the generated game image 101 in order to project it to the projectors 12a to 12f (step S3). The game image 101 is divided into a plurality so as to correspond to the respective screens sc1 to sc6. The game control unit 31 transmits each image corresponding to each projector 12a to 12f, displays it as the game image 101 (step S4), and ends the current process. In the image generation process, steps S1 to S4 executed by the image generation unit 33 of the game control unit 31 function as an image generation unit.

  FIG. 9 is a flowchart showing the brightness control process executed by the game control unit 31. The brightness control process is a process executed by the attention area determination unit 34 and the brightness control unit 35 of the game control unit 31 and controls the brightness of the game image 101. First, the game control unit 31 acquires data of the game image 101 generated by the image generation unit 33 (step S11). And the game control part 31 recognizes a user's face by the motion detection sensor 13 (step S12). In the face recognition process, the direction of the user's face and the direction of the line of sight are identified. A known technique may be used for this face recognition process. And the game control part 31 determines the attention coordinate C located on the game image 101 based on a recognition result (step S13). In step S12, the direction of the face the user is facing is identified, so the position on the game screen 100 indicated by the face direction is determined as the attention coordinate C. Alternatively, the direction of the user's line of sight may be detected in step S11, and the position on the game screen 100 indicated by the direction may be determined as the attention coordinate C.

  The game control unit 31 determines the user attention area AA in the game image 101 based on the attention coordinate C (step S14). A predetermined range centered on the attention coordinate C is set as the user attention area AA. The range of the user attention area AA may be specified by an angle such as 45 ° left and right or 90 ° left and right with the front direction being 0 ° centered on the position of the user's head. The range may be specified by distance. The user may be able to set the range. When the user attention area AA is determined, the remaining area in the game image 101 is set as the non-attention area NA.

  Then, the game control unit 31 lowers the brightness of the image set as the non-attention area NA (Step S15), and ends the current process. The brightness of the game image 101 may be lowered uniformly over the entire range of the non-attention area NA (see FIG. 6). Alternatively, as illustrated in FIG. 10, the brightness may be controlled so that the brightness is gradually decreased with respect to the non-target area NA as the distance from the target coordinate C increases. Regarding the brightness setting, all areas of the non-attention area NA may be set to black so as to be indistinguishable, or drawn with an equal reduction width with respect to the brightness of the image in the non-attention area NA. It may be adjusted so that an existing image can be identified. Appropriate settings are possible. Further, the user may be able to set a lightness reduction width in the non-attention area NA.

  According to the processing described above, the motion detection sensor 13 recognizes the face of the user who is moving during the game (step S12), and the attention coordinate C is determined based on the recognition result (step S13). When the user attention area AA is determined based on the attention coordinates C (step S14), the brightness of the non-attention area NA outside the user attention area AA is lowered from the acquired game image 101 data (step S15). By discriminating the area that the user is paying attention to with respect to the game image 101, the brightness in the game machine 1 is reduced by relatively lowering the brightness of the area that the user is not paying attention to. It is possible to prevent the screen 100 from being difficult to see. The brightness is reduced in an area where the user is not paying attention, so that the game progress is not affected. In the processing described above, the processing in steps S11 to S14 executed by the attention area determination unit 34 of the game control unit 31 functions as attention area determination means, and the processing in step S15 executed by the brightness control unit 35 is brightness. It functions as a control means.

  The present invention is not limited to the above-described form and can be implemented in various forms. For example, in the present embodiment, the attention coordinate C that the user is paying attention to is identified by recognizing the user's face using the motion detection sensor 13, but the user's facial expression, hand movement, whole body motion, Furthermore, the attention coordinate C may be specified by detecting a specific action. Further, instead of the motion detection sensor 13, for example, a position on the game screen 100 may be specified using a laser pointer. Or you may specify based on the operation input by the operation lever 23a provided in the game machine 1, or the touch panel 23d. Further, the attention coordinate C may be determined by detecting a motion by a handy type controller provided with an acceleration sensor. A motion may be detected by attaching an acceleration sensor to the user. An appropriate known technique may be used to determine the attention coordinate C.

  In the embodiment described above, the brightness in the game image 101 is controlled by adjusting the brightness of the game image 101 so that the user attention area AA is relatively brighter than the non-attention area NA. Not limited. For example, the user attention area AA may be relatively darker than the non-attention area NA. When there is an abnormality in the status of the character operated by the user, it is difficult to operate by darkening the user attention area AA as compared with the non-attention area NA, and the realistic sensation of the game can be enhanced. Further, the brightness is not limited to the brightness of the game image 101. For example, the brightness may be controlled by adjusting the saturation of the game image 101.

  The user attention area AA has been described as an area extending in a predetermined range on the left and right with the attention coordinate C as the center, but is not limited thereto. The user attention area AA may be set as an area concentrically extending in the attack range AR, or the attack range AR may be set. The range of the predetermined shape is not limited to a circle, and may be set as a range that is easy for the user to visually recognize. Also, with regard to the process of the boundary between the user attention area AA and the non-attention area NA, the gradation process as shown in FIG. 10 is performed so as to cross the respective areas around the boundary line between the user attention area AA and the non-attention area NA. The gradation of a part of the boundary line may be darkened so that a part of the boundary line becomes difficult to see. Appropriate changes can be made according to the game expression.

  In the embodiment described above, a plurality of projectors 12 have been described as display means, but the present invention is not limited to this. For example, a liquid crystal display device may be used. A plurality of liquid crystal display devices may be arranged adjacent to each other to realize a large screen. It may be arranged in a spherical shape so as to surround the user's surroundings, or may be arranged in a planar shape. If the user can identify the entire image, a gap may be provided between the display means. For the formation of the screen, an appropriate arrangement may be applied. Similarly, the brightness can be adjusted by adjusting the brightness of the game image 101. A display in which each pixel is provided with a light emitting element such as an LED display or an organic EL display can also be used. In this case, the brightness can be controlled by adjusting the brightness of the game image 101, but the brightness can also be controlled by adjusting the luminance of each pixel. The light emitting elements in the non-target area NA may be designated and controlled so as to reduce the luminance of those light emitting elements.

(Second form)
Next, a game machine to which the image display device according to the second embodiment of the present invention is applied will be described. In the second embodiment, the game machine will be described with a reference numeral 1A. The hardware configuration of the game machine 1A is substantially the same as the configuration described with reference to FIGS. Note that the same configuration as that of the first embodiment will be described with the same reference numerals. In the second embodiment, the brightness is controlled by controlling the output of a light source (not shown) for projecting images provided in the projectors 12a to 12f and adjusting the display luminance.

  FIG. 11 is a diagram showing a game image 101A for explaining the user attention area AA2 in the second embodiment. In the second embodiment, the normal screen configuration is the same as that described with reference to FIG. In the game machine 1A, the game image 101A displayed on the game screen 100A shows an attack range AR of a predetermined size spreading concentrically around the target coordinate C as in the first embodiment. In the second form, images P1 to P6 shown on several screens sc1 to sc6 on which the attack range AR is displayed are set as the user attention area AA2. That is, the user attention area AA2 is set in units of projectors 12a to 12f. In the example shown in FIG. 11, the attack range AR is displayed over the screens sc1, sc2, sc5, and sc6. Is the user attention area AA2. The images P3 and P4 displayed on the remaining screens sc3 and sc4 are set as the non-attention area NA2. In FIG. 11, if the target coordinate C moves to the center of the game screen 100A, the attack range AR is within the screens sc1 and sc2 projected by the projectors 12a and 12b, and the images P1 and P2 displayed on the screens sc1 and sc2 Is the user attention area AA2, and the range of the images P3 to P6 displayed on the screens sc3 to sc6 is set as the non-attention area NA2.

  The display brightness of the third projector 12c and the fourth projector 12d that display the non-attention area NA2 is relative to the first, second, fifth, and sixth projectors 12a, 12b, 12e, and 12f that display the user attention area AA2. Is set low. The outputs of the light sources of the third and fourth projectors 12c and 12d may be turned off or adjusted to appropriate luminance. The non-attention area NA2 is set for each projector provided in the game machine 1A. By setting the display brightness of the projector 12 to be low, the user attention area AA2 and the non-attention area NA2 are switched and displayed on the game screen 100A according to the attention coordinate C.

  Although the setting of the user attention area AA2 has been described as an example set based on the attack range AR, the present invention is not limited to this. For example, a predetermined range different from the attack range AR is set based on the attention coordinate C, the range displayed by the projector in charge of displaying the range is set as the user attention area AA2, and the range displayed by the remaining projectors 12 May be set as the non-attention area NA2. The range for determining the user attention area AA2 is set to an appropriate size. Alternatively, the projector 12 to be controlled may be associated according to the position of the target coordinate C, and the projector 12 to be controlled may be determined based on the position of the target coordinate C. Appropriate changes are possible.

  FIG. 12 is a functional block diagram in the control system of the game machine 1A. The game machine 1A is provided with a game control unit 41 and a storage unit 42. The game control unit 41 is a logical device realized by a combination of computer hardware (including peripheral devices such as a CPU and an internal storage device necessary for its operation) of the game machine 1 and software. The storage unit 42 is an external storage device realized by a storage unit such as a hard disk array. The configuration of the storage unit 42 may be the same configuration as the storage unit 32 described in the first embodiment.

  The game control unit 41 includes an image generation unit 33 that generates the game image 101A, a projector determination unit 44 that determines the projector 12 on which the user attention area AA2 in the game image 101A is to be projected, and the determination results of the projector determination unit 44. And a brightness control unit 45 that controls the output of the light source of each projector 12 is provided. The projector determination unit 44 determines the projector 12 whose light source is to be controlled based on the position of the target coordinate C. The brightness control unit 45 controls the brightness in the game image 101A by lowering the output of the light source of the projector 12 to be controlled based on the determination result of the projector determination unit 44. The image display device 2 </ b> A is a device that includes a game control unit 41, a plurality of projectors 12, and a motion detection sensor 13.

  FIG. 13 is a flowchart showing the brightness control process executed by the game control unit 41. Each process of steps S21 to S23 executed by the game control unit 41 is the same as each process of steps S11 to S13 described with reference to FIG. After step S23, the game control unit 41 determines the projector 12 to be controlled based on the attention coordinate C (step S24). For example, as described above, the image P projected by the projector 12 displaying the attack range AR is set as the user attention area AA2, and the remaining image P is set as the non-attention area NA2. The projector assigned the display of the non-attention area NA2 is determined as the projector 12 to be controlled. A known technique may be used to determine the user attention area AA2 and the non-attention area NA2 in the game image 101A.

  Then, the game control unit 41 decreases the display brightness of the projector 12 determined in step S24 (step S25). As shown in FIG. 11, the third and fourth projectors 12c project the third screen sc3 on which the third image P3 set as the non-attention area NA2 is displayed and the fourth screen sc4 on which the fourth image P4 is displayed. , 12d is set to be relatively lower than the other projectors 12a, 12b, 12e, 12f, and the third image P3 and the fourth image P4 are displayed darkly. Thereby, in the game machine 1A, the display brightness is adjusted in units of projectors based on the position of the attention coordinate C, so that the brightness in the game image 101A can be controlled.

  According to the processing described above, the projector 12 that lowers the display brightness is determined based on the position of the target coordinate C in the game image 101A (step S24). Then, the display brightness of the projector 12 determined in step S24 is set low (step S25). Compared to the first form, the brightness is controlled in units of the projector 12 in the second form. The process of step S24 performed by the projector determination unit 44 of the game control unit 41 functions as an attention area determination unit, and the process of step S25 performed by the brightness control unit 45 of the game control unit 41 functions as a brightness control unit.

  In the second embodiment, the projectors 12a to 12f have been described as display units, but the present invention is not limited to this. For example, a plurality of liquid crystal display devices may be used as display means constituting the game screen 100A. Similar to the control of the projectors 12a to 12f, the brightness can be controlled on the game image 101A by adjusting the display brightness for each of the plurality of liquid crystal display devices. In addition, various display means such as an LED display device and an organic EL display device may be used. The present invention can be applied to an image display device that forms a screen by combining a plurality of display means.

  Also in the second mode, as described in the first mode, the user attention area AA2 may be relatively darker than the non-attention area NA2, or as shown in FIG. The gradation process may be executed by adjusting the display brightness of each display means. In the first form, each pixel constituting the image is a unit for controlling the brightness, and in the second form, the projector for projecting the partial image is a unit for controlling the brightness. In order to control the brightness, the brightness of the image processed by the software is adjusted in the first form, and the display brightness of each projector 12 that projects the game screen 100A is adjusted in the second form. Also in the second embodiment, the adjustment of the brightness of the image as described in the first embodiment may be applied to the adjustment of the display brightness of each projector 12 to have an appropriate configuration. Further, the brightness and saturation of the game image 101A may be adjusted for each of the projectors 12a to 12f.

DESCRIPTION OF SYMBOLS 1, 1A Game machine 2, 2A Image display apparatus 12a-12f 1st projector-6th projector (a display means, a some display unit)
DESCRIPTION OF SYMBOLS 13 Motion detection sensor 31, 41 Game control part 33 Image generation part 34 Attention area discrimination | determination part 35, 45 Brightness control part 44 Projector discrimination | determination part 100, 100A Game screen 101, 101A Game image AA, AA2 User attention area C Attention coordinate NA , NA2 Non-attention area P1 to P6 First image to sixth image sc1 to sc6 First screen to sixth screen

Claims (12)

Display means for displaying a predetermined image;
Attention area discrimination means for discriminating a user attention area in which the user is paying attention in the image;
Brightness control means for controlling the brightness of the user attention area and the brightness of a non-attention area other than the user attention area in the image based on the determination result of the attention area determination means;
An image display device comprising: Further comprising image generating means for generating the image by software processing;
The brightness control means includes the brightness of the user attention area of the image generated by the image generation means and the non-attention area so that the user attention area is relatively brighter than the non-attention area. The image display device according to claim 1, wherein the brightness of the image is controlled.   The image display device according to claim 2, wherein the brightness control unit controls the brightness of the non-attention area to be lower than that of the user attention area.   The image display device according to claim 3, wherein the brightness control unit controls the brightness of the non-attention area in a stepwise manner as the distance from the user attention area increases. Further comprising an operation detection means for detecting the operation of the user,
The image display device according to any one of claims 1 to 4, wherein the attention area determination unit determines the user attention area based on a detection result of the motion detection unit.   The image display device according to claim 5, wherein the attention area determination unit determines the user attention area based on an attention direction of a face that the user is facing detected by the motion detection unit.   The image display device according to claim 5, wherein the attention area determination unit determines the user attention area based on a direction of attention of a line of sight directed by the user detected by the motion detection unit.   The image display device according to claim 6, wherein the attention area determination unit determines an area in a predetermined range based on a position in the image corresponding to the attention direction as the user attention area.   The image display device according to claim 1, wherein the display unit displays the image so as to surround the user.   The image according to claim 9, wherein the display unit is a plurality of projectors that divide the image into a plurality of partial images and display the partial images on a screen provided so as to surround the user. Display device. An image display method of an image display device comprising a display means for displaying a predetermined image,
An attention area determination procedure for determining a user attention area in which the user is paying attention in the image;
A brightness control procedure for controlling to differentiate between the brightness of the user attention area and the brightness of a non-attention area other than the user attention area in the image based on the determination result of the attention area determination procedure;
An image display method comprising: A computer program to be executed by a computer device of an image display device provided with display means for displaying a predetermined image,
Said computer device,
An attention area discriminating unit for discriminating a user attention area in which the user is paying attention in the image, and brightness of the user attention area and a user attention area in the image other than the user attention area in the image A computer program configured to function as brightness control means for controlling the brightness of a non-attention area to be differentiated.