JPWO2007091333A1 - Video display device - Google Patents

Abstract

There is a problem in that an image that enhances the playability of the staircase portion in an amusement facility or department store cannot be displayed on the surface having an uneven shape. As a solution, an image having a certain direction and speed is output in advance to a screen having an uneven shape, and when a person or an object moves on the screen, the image to be output is changed according to the position information. The video that has changed is displayed in a larger scale than the video that is normally projected on the flat part, depending on the screen with the uneven shape, thus creating a visual image effect that appears to change in speed and increasing the playability. be able to.

Description

  The present invention relates to a technology of an apparatus for projecting an image on a screen having an uneven shape.

In fields such as an amusement facility and a game machine, a technique related to a video display device that acquires position information of an object on a screen and changes a video according to the acquired position information has been developed. In Patent Document 1, a technique has been developed in which a moving position of a hand is acquired as position information, and a cursor on a display is moved by moving the hand like a computer mouse. Patent Document 2 discloses a technology that can acquire position information according to the movement of a person standing in front of a screen and play a game displayed on the display using the acquired position information. .
JP 2000-196914 A US005534917

  However, even when the above technique is used, it is usual to use a display or a flat screen as a medium for displaying an image, and the content of the image is intended to be displayed on a plane. For this reason, when these images are displayed on a surface having an uneven shape, an image effect is produced on the images rather than an image effect. Therefore, the uneven shape only becomes a factor that hinders the display of a clear image. For this reason, it was not possible to display a highly entertaining video on a surface having an uneven shape such as an amusement facility or a department store stairs. In addition, because amusement facilities and department store stairs cannot be placed under the Fire Service Act, it has not been possible to improve playability by installing playground equipment.

  Accordingly, an object of the present invention is to provide a video display device capable of displaying a video having high playability on a surface having a concavo-convex shape, particularly a stepped surface.

  In order to solve the above-described problems, in the first invention, an image having an uneven shape, on which an object can be arranged or moved, and on which the uneven shape can give an image effect is output. And a position information acquiring unit that acquires position information of an object on the screen, and an image output from the projection unit is changed according to the uneven shape according to the acquired position information. And a control unit for controlling the video display device.

  According to a second aspect of the present invention, in the video display device according to the first aspect of the invention, the projection unit has a pattern from an upper portion of the concavo-convex screen toward a lower portion as an image capable of giving an image effect. Provided is a video display device having a fall video output means for outputting a video of moving.

  According to a third aspect of the present invention, there is provided the video display device according to the first or second aspect, wherein the projection unit has a staircase screen projection means for outputting an image using the staircase as the screen. The fourth invention is characterized in that the projection unit projects at an angle of greater than 0 degrees and less than 90 degrees with respect to the horizontal plane of the stairs when viewed from the side going up the stairs. The fifth invention is characterized in that the projection unit projects at an angle of 45 degrees with respect to the horizontal plane of the stairs. Further, the sixth invention is characterized in that the projection part projects at an angle greater than 45 degrees and less than 90 degrees with respect to the horizontal plane of the staircase. Further, the seventh invention is characterized in that the projection part projects in a direction substantially perpendicular to the gradient surface of the staircase. In the eighth invention, the position information acquisition unit acquires position information from a direction substantially perpendicular to the horizontal plane of the staircase.

  In the video display device of the present invention configured as described above, the position information of the object on the surface having the concavo-convex shape is acquired, and the image that gives the image effect to the concavo-convex shape screen according to the movement of the object and the concavo-convex shape By outputting, it is possible to enhance the playability on the surface having the uneven shape.

  In particular, when the uneven shape is a staircase shape, by displaying an image corresponding to the position information of the object and the staircase shape, it is possible to improve the amusement in the staircase, which was difficult to improve the amusement in the past. It is possible to improve. Even in places where objects cannot be placed by the Fire Service Act, such as amusement facilities and department store stairs, it is possible to improve the playability without installing playground equipment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention. The first embodiment will mainly describe claims 1 and 2. The second embodiment will mainly describe claims 3 to 8.

  Embodiment 1

  (Concept of Embodiment 1) The concept when the video display apparatus of this embodiment is used will be described with reference to FIGS. As shown in FIG. 1, first, an image of a river flowing in the direction of the arrow is displayed on an uneven floor, and when the foot is stepped into the image of the river flowing, FIG. 2 (1), (2) As shown in the figure, the foot position information is projected as if the foot actually entered the river. FIG. 2 (1) is an image when the foot is set on the upstream side of the river flow, and FIG. 2 (2) is an image when the foot is set on the downstream side of the river flow. The image projected at this time is further displayed so as to change according to the uneven shape along with the flow of the river. A video display device capable of displaying the above video will be described in detail below.

  (Configuration of Embodiment 1) FIG. 3 is a functional block diagram of a video display apparatus according to this embodiment. The “video display device” (0300) in this embodiment includes a “projection unit” (0301), a “position information acquisition unit” (0302), and a “control unit” (0303). FIG. 4 shows a hardware configuration of the video display apparatus according to this embodiment. As shown in FIG. 4, each unit of the video display device (0300) includes an HDD (0401), a CPU (0402), a ROM (0403), a RAM (0404), an external communication device (0405), a projector (0406), a system. A bus (0407), an image pickup body (0409), an external communication device and a projector, an interface (0408) for connecting the image pickup body, and the like are included.

  (Description of Configuration of Embodiment 1) The “video display device” (0300) includes a projection unit (0301), a position information acquisition unit (0302), and a control unit (0303), and displays an image on a screen having an uneven shape. It is configured to display. As shown in FIG. 5, the video display device (0300) may be installed on an upper portion of a screen (0501) having a concavo-convex shape to display video on the screen, or display video on the screen. If possible, it may be installed on a side wall or the like.

  The “projection part” (0301) has a concavo-convex shape, and is configured to output an image on which the concavo-convex shape can give an image effect to a screen on which an object can be arranged or moved. ing. As shown in FIG. 4, the projection unit is composed of a projector (0406) and the like. Further, as shown in FIG. 5, the projection unit may directly display an image on a screen having an uneven shape, but as shown in FIG. 6, the image from the projection unit (0301) is displayed as a mirror ( 0601) or the like, and an image may be displayed on the screen (0501). When reflecting on a mirror, the position of the image to be projected may be adjusted by changing the reflection angle of the mirror. A plurality of projection units may be provided for one screen.

  A screen having a concavo-convex shape, on which an object can be placed or moved, has a concavo-convex surface on which the object can move or stay in one place. Say. For example, the screen having an uneven shape may be a floor surface provided with unevenness such as stones and rocks as shown in FIG. 1 or a wall surface provided with similar unevenness. Note that “on the surface” does not necessarily need to be in contact with the screen, and may be a position separated from the screen by a certain distance.

  The image in which the concavo-convex shape can give an image effect is a video that is controlled so as to give a change according to the concavo-convex shape by a control unit described later. For example, in the image in FIG. 1, an image imitating the flow of a river is output on a floor surface with stones and rocks asperities. In this case, the image displayed on the floor is given a change according to the uneven shape, which will be described with reference to FIG.

  FIG. 7 is a diagram schematically showing a case where the video output from the projection unit is projected on the screen. When the projection unit outputs an image in the same image range S with a flat surface having no uneven shape as shown in FIG. 7A and a surface having an uneven shape as shown in FIG. The image output on the surface having the concavo-convex shape is enlarged and displayed in accordance with the concavo-convex shape than the image output on the smooth surface (range S ′). This is because the output image is displayed along the uneven shape on the surface having the uneven shape. Therefore, for example, when outputting an image of water that has a certain direction on a screen having an uneven shape and is flowing at a constant speed, the image is enlarged and displayed according to the uneven shape. Also, an image having a visually high flow velocity is displayed at a portion having an uneven shape.

  In general, when the flow velocity V, the flow rate Q, and the cross-sectional area are A, the flow velocity is expressed as V = Q / A. Therefore, when the flow rate is constant, the flow velocity increases as the cross-sectional area decreases. That is, even in an actual river flow, if the flow rate is constant, the cross-sectional area viewed from the flow direction becomes smaller and the flow velocity becomes faster at a portion that is shallow due to a stone or the like. Therefore, as described above, the image is enlarged and displayed on the surface having the concavo-convex shape, so that a state close to the dynamics of real water can be expressed by flowing the image at a constant speed.

  In this way, the projection unit can output an image that is controlled by the control unit, which will be described later, to change according to the uneven shape. The video to be output is not limited to the video representing the river flow exemplified above, but may be any video, but by displaying the video with directionality and movement, the video with higher image effect is displayed. be able to. In addition, the video to be output may be an actually shot video, but by creating a video to be output by CG (computer graphic) or the like, it is possible to make the display more conform to the uneven shape.

  Furthermore, by adding a gradient to the screen having a concavo-convex shape and displaying an image having directionality from a high position of the screen to a low position, it is possible to express a more realistic image. At this time, the projection unit has dropping means video output means. The dropping means image output means has a function of outputting an image in which the pattern moves from a portion at a high position of the concavo-convex screen toward a portion at a low position as an image capable of giving an image effect. The dropping means image output means can output, for example, an image of a river flowing from a portion at a high position on the screen toward a portion at a low position.

  The “position information acquisition unit” (0302) is configured to acquire the position information of the object on the screen. “Position information” is information for indicating the position of an object on the screen. As shown in FIG. 4, the position information acquisition unit includes an image pickup body (0409) for acquiring an image of an object on the screen, and an HDD (0401) in which software for analyzing the image acquired from the image pickup body is recorded. The CPU (0402), the ROM (0403), the RAM (0404), and the like for operating the software. A video camera or the like is suitable as the imaging body. As shown in FIG. 5, the image pickup body may pick up an image from the ceiling downward, or like the projection unit shown in FIG. 6, the image on the screen reflected by the mirror may be picked up. In order to accurately acquire position information, it is desirable to use an infrared sensor or the like in addition to an imaging body such as a video camera. The position information acquisition unit may be juxtaposed with the projection unit, or may be provided at a location different from the projection unit. In addition, as shown in FIG. 4, about the structure which overlaps with a control part among the structures of a positional information acquisition part, it is good also as utilizing superimposing, and good also as a separate structure. For example, the position information of an object can be identified by comparing, among images acquired by an imaging body, an image captured before the object is placed or moved and an image taken after the object is placed or moved. It can be carried out.

  As shown in FIG. 8 (1A), when a screen having a concavo-convex shape is indicated by the X-axis and Y-axis, each position on the screen is represented by an XY coordinate block as shown in FIG. 8 (1B). be able to. In the imaging body, a screen image in the state shown in FIG. Then, when an object is placed or moved on the screen, as shown in FIG. 8 (2A), the image picked up by the image pickup body changes. When the image acquired in the state of FIG. 8 (2A) is compared with the image acquired in the state of FIG. 8 (1A), the image is the same except for the portion where the object exists. Therefore, when the difference value between the two images is acquired and a numerical value of 1 is assigned to a location where the difference value is 0, 0 and a location where the difference value is other than 0 are assigned as shown in FIG. 8 (2B). Further, when the difference value is acquired by comparing the image acquired in the state of FIG. 8 (3A) with the image acquired in the state of FIG. 8 (1A) after the movement of the object, it is shown in FIG. 8 (3B). Can be expressed as: In FIGS. 8B and 8B, 0 is displayed in white and 1 is displayed in black.

  As shown in FIGS. 8 (2B) and (3B), when the coordinate block is set finer than the size of the object, the position of the object on the screen is recognized with a specific spread. At this time, the coordinates indicated by the entire spread may be acquired as the position information of the object, or only the coordinates of the center may be acquired as the position information of the object. When a video camera or the like is used as the imaging body, it is possible to continuously capture images and acquire position information. In addition, although demonstrated using the spherical body in FIG. 8, when the floor surface which has an uneven | corrugated shape is made into a screen, the image imaged by a person's passage etc. changes, and the place where a person exists is acquired as position information. The

  The position information of the object can be acquired as described above. Further, according to the technique disclosed in Japanese Patent Application Laid-Open No. 2003-135851, each video may be compared by acquiring two pieces of continuous still images forming the video and acquiring position information. As a means for acquiring position information, for example, a product such as “GroundFX (TM)” of Gesturetek may be used. Further, as another means for acquiring the position information, for example, a film for detecting pressure or vibration may be provided under the screen, and the position of the object may be specified at the location where pressure or vibration is detected. In this case, it is not necessary to install an imaging body. The means for acquiring the position information is not limited to these methods, and any other means may be used as long as it can identify the position of the object.

  The “control unit” (0303) is configured to control the image output from the projection unit so as to change according to the uneven shape in accordance with the acquired position information. The control unit includes software and hardware for outputting video. As shown in FIG. 4, the hardware configuration of the control unit operates software for outputting video and HDD (0401) for storing video information to be output, and software for outputting video. CPU (0402), ROM (0403), RAM (0404), and a system bus (0407) for connecting them. In addition, when acquiring video information from an external video information server or the like via a network, an external communication device (0405) for connecting to a LAN or the like may be provided.

  When the object is not arranged or moved on the screen surface, the position information acquisition unit does not acquire the position information. Therefore, the control unit displays, for example, a river flow image as illustrated in FIG. Control the projection part to output to Then, when an object is placed or moved on the screen surface, the position information acquisition unit acquires the position information of the object, and the control unit outputs an image corresponding to the acquired position information at the projection unit. Control to do.

  For example, as shown in FIG. 1, when an image of a river flow is displayed on a floor screen having an uneven shape, when an object is arranged within the range of the screen as shown in FIG. 2, The position information acquisition unit provided at the top of the screen or the like acquires the position information of the object. Then, the control unit outputs an image corresponding to the position information. In the example shown in FIGS. 2 (1) and 2 (2), control is performed so as to output an image of splashing water as if the user actually stepped into the water and a state in which the water was scraped. Since the flow image has a certain direction, control is performed so as to output an image whose influence affects the downstream side according to the flow. At this time, even if the image of the river with a constant flow velocity or the image of bubbles flowing at a constant speed is actually output, as shown in FIG. 7, the screen has an uneven shape. It looks like the flow rate changes.

  (Specific Example of Embodiment 1) FIG. 9 shows an example of a state in which the projection unit (0901) and the position information acquisition unit (0902) are arranged in the cabinet (0904) and connected to the control unit (0903). . The projection unit includes a projector, and the position information acquisition unit includes a video camera (0902a) and four infrared sensors (0902b) for improving accuracy. These projection unit and position information acquisition unit are computers that are control units. Connected to. The image display device constituted by these is installed on the upper part of the screen having an uneven shape.

  The projection unit outputs an image of a river flow as shown in FIG. 1 under the control of the control unit. In the position information acquisition unit, an image in which no object is present on the screen surface is captured in advance. In this state, when a person stops or passes on the screen surface, the image acquired by the video camera changes, and further, the position information of the person on the screen is detected by the infrared sensor. To get. When the position information is acquired, the control unit controls an image to be output according to the position indicated by the acquired position information on the screen surface. For example, when the upstream position information of the river image as shown in FIG. 1 is acquired, the influence on the image due to the passage of people as shown in FIG. When the acquired position information is on the downstream side as shown in FIG. 2 (2), an image whose influence is not so wide is output. At this time, even if the flow velocity of the river of the output video is kept constant, the visual effect that the flow velocity is changing can be given due to the uneven shape of the screen. At this time, if an image is displayed on a screen provided with a gradient, an image effect that reproduces a more realistic water flow can be provided.

(Effect of Embodiment 1) In the video display device of the present embodiment having the above-described configuration, the position information of the object on the surface having the uneven shape is acquired, and this uneven shape is determined according to the movement of the object and the uneven shape By outputting a video that gives an image effect to the screen, it is possible to display a video with high playability on a surface having an uneven shape.
<< Embodiment 2 >>

  (Concept of Embodiment 2) The concept when the video display apparatus of this embodiment is used will be described with reference to FIG. As shown in FIG. 10, in the video display device of the present embodiment, the video is output using the staircase as a screen in the video display device of the first embodiment. As in the first embodiment, when an image of a river flow is displayed on the staircase surface so as to flow from the upper stage side of the stairs to the lower stage side, an image effect can be provided such that the river flow flows down the stairs. A video display device capable of displaying the above video will be described in detail below.

  (Configuration of Second Embodiment) FIG. 11 is a functional block diagram of a video display apparatus according to this embodiment. The “video display device” (1100) in this embodiment includes a “projection unit” (1101), an “information acquisition unit” (1102), and a “control unit” (1103), and further includes a projection unit (1101). Has "stair screen projection means" (1104). Since the configuration other than the “staircase screen projection means” (1104) has already been described in the first embodiment, the description thereof is omitted. FIG. 12 shows the hardware configuration of the video display apparatus according to this embodiment. As shown in FIG. 12, each part of the video display device (1100) includes an HDD (1201), a CPU (1202), a ROM (1203), a RAM (1204), an external communication device (1205), a projector (1206), and a system. A bus (1207), an image pickup body (1209), an external communication device and a projector, and an interface (1208) for connecting the image pickup body are included.

  (Description of Configuration of Embodiment 2) The “staircase screen projection means” (1104) is a function provided in the projection unit, and outputs an image using the staircase as the screen. As shown in FIG. 13, the projection unit provided with the staircase screen projection means has a projection angle θ that is greater than 0 degree and less than 90 degrees with respect to the horizontal plane (1303) of the staircase (1303) when viewed from the side up the stairs (1301). Project at an angle. More specifically, for example, as shown in FIG. 13, the angle of the projection angle with respect to the horizontal plane (1303) of the staircase of the image output from the projection unit of the cabinet (1302) is greater than 0 degree and less than 90 degrees. Install so that the angle is θ. Here, the projection angle refers to an angle formed by the optical axis of the projector and a horizontal plane, and is also referred to as a projection angle. In this embodiment, the angle formed when the optical axis of a projection part and the horizontal surface of a staircase are seen from the side where a staircase goes up is said. Note that the stairs in this embodiment are formed of a substantially horizontal horizontal plane (1303) and a substantially vertical vertical plane (1304).

  As shown in FIG. 13, the angle θ of the projection angle with respect to the horizontal plane of the stairs when viewed from the upper side of the stairs is displayed on the horizontal plane (1303) and the vertical plane (1304) when 0 ° <θ <90 ° is satisfied. The image is enlarged and displayed as compared with a case where the image is projected from a vertical direction on a screen having no uneven shape. This will be described with reference to FIG.

  As shown in FIG. 14, when the projection angle is θ (0 ° <θ <90 °) with respect to the horizontal plane of the staircase, the video of the width R output from the projection unit is L = R / on the horizontal plane. It is enlarged and displayed as sin θ. Similarly, an image having a width R is enlarged and displayed as M = R / cos θ on the vertical plane. When R = 1, L = 1 / sin θ and M = 1 / cos θ. Even when the same image is displayed on the horizontal plane and the vertical plane, they are enlarged to 1 / sin θ times and 1 / cos θ times, respectively. An image is displayed.

  In this way, for example, when an image of a river flowing is displayed by the staircase screen projection means at an angle θ of the projection angle with respect to the horizontal plane of the staircase, an image with a different magnification ratio is displayed on the horizontal plane and the vertical plane. Therefore, the displayed image can be changed by adjusting the angle θ of the projection angle.

  For example, if θ = 45 °, the images displayed on the horizontal plane and the vertical plane are each multiplied by √2, and the horizontal and vertical planes have the same magnification. Therefore, in the case of displaying characters in addition to the video as shown in FIG. 12, there is no difference in the enlargement ratio of the video displayed between the horizontal plane and the vertical plane, and an easy-to-view video (video that is easy to read) is displayed. Can be displayed. For this reason, for example, when the projected video is an advertisement or the like, it is possible to display characters or the like to be transmitted in an easy-to-see manner.

  Further, when 45 ° <θ <90 °, the enlargement ratio in the vertical plane is larger than the enlargement ratio in the horizontal plane. For this reason, when an image with a constant speed, such as a river flow, is output by the projection unit, a visual image effect is produced in which the flow velocity on the vertical plane appears faster than the flow velocity on the horizontal plane.

  Further, the projection angle θ may be projected in a substantially vertical direction with respect to the slope surface of the staircase regardless of the horizontal plane of the staircase. As shown in FIG. 15, the stair slope surface (1501) is a surface formed by connecting the corners (1502) of the staircase. When projection is performed from a direction substantially perpendicular to the gradient surface of the staircase, the distortion of the image is reduced on the upper side of the staircase and the lower side of the staircase, and the displayed image can be easily corrected.

  Furthermore, the projection unit in the present embodiment preferably has a projection angle greater than 0 degrees and less than 90 degrees with respect to the stairs, but the position information acquisition unit is integrated with the projection unit as shown in FIG. The position information of the object on the staircase may be acquired at the same angle as the angle projected by the projection unit, or the position information acquisition unit is separate from the projection unit, and only the position information acquisition unit is relative to the horizontal plane of the staircase. It may be installed on the ceiling or the like so as to be substantially vertical.

  (Specific Example of Embodiment 2) As shown in FIG. 10, a case where the projection unit outputs an image using a staircase as a screen will be described in detail using a specific example.

  As shown in FIG. 13, first, the projection unit is installed so that the projection angle θ is 0 ° <θ <90 ° with respect to the horizontal plane of the stairs when viewed from the side going up the stairs. The projection unit uses a projector as in the first embodiment. In FIG. 13, as in the first embodiment, the position information acquisition unit includes a video camera and four infrared sensors, and is arranged in the same cabinet as the projection unit. By changing the angle of this cabinet, the angle of the projection angle with respect to the horizontal plane of the stairs can be changed.

  The projection unit thus installed first outputs an image of a river flow as shown in FIG. 16 (1) under the control of the control unit. In the position information acquisition unit, an image in which no object is present on the surface of the staircase is captured in advance. The XY coordinate block at this time is shown in FIG. In this state, when a person stops or passes on the stairs as shown in FIG. 17A, the image acquired by the video camera changes, and the difference value from the state of FIG. get. The difference value acquired in FIG. 17B is shown on the XY coordinate block. Further, by detecting a person as an object with an infrared sensor together with a video camera, position information on the person's staircase surface is acquired. When the position information is acquired, the control unit controls an image to be output according to the position indicated by the acquired position information on the staircase surface. For example, when the position information of a person is acquired on the lower side of the stairs, control is performed so as to output an image in which the influence of the person passing on the image does not reach a very wide range. In the case of the upper stage side of the stairs, control is performed so as to output an image whose influence extends to the lower stage side as shown in FIG. The projection position of the output video is determined according to the acquired position information. For example, the projection position of the video shown in FIG. 18 (1) is determined by a coordinate block as shown in FIG. 18 (2). Note that FIG. 18B is not a diagram showing the position information acquired by the position information acquisition unit, but a diagram showing the projection position of the video output according to the position information acquired by the position information acquisition unit. In the coordinate block shown in FIG. 18 (2), the image of the splash is output from the most + X and + Y side coordinates (the lowest left coordinate) of the acquired position information to the + X and + Y direction (the lower left direction). A splash image is output from the -X, + Y side coordinates (bottom rightmost coordinate) to the -X, + Y direction (bottom right direction), and bubbles appear at random coordinates between the left and right wave splashes. This shows the projection position of the video when the video is output. The control unit controls the projection unit to output an image such as a wave splash or a bubble at these coordinates. Then, the type, position, and the like of the output video are changed with time so that these videos flow downstream according to the river flow shown in FIG. Then, pedestrians on the stairs can enjoy the video changing according to their movements. Note that these images can be generated in any way by creating them with CG. Therefore, images different from these images may be output, and the projection position may be changed according to the type of image. It is not restricted to this aspect. In FIG. 18B, the image of splashing is output from the lower left and lower right positions of the acquired coordinate block, but the same change may be made from the entire acquired coordinate block. Further, the output image is a three-dimensional image as shown in FIG. 18 (1) even when a planar image is output by designating the position of the two-dimensional coordinate block as shown in FIG. 18 (2). It can be a moving image. At this time, even if the flow rate of the river in the output image remains constant, when viewed from the top of the stairs, the horizontal surface of the stairs will appear as if water is flowing from the back to the near side. In the vertical plane, the image looks like water is flowing from top to bottom.

  As another embodiment, when the cabinet shown in FIG. 13 is adjusted so that the projection angle is θ = 45 ° with respect to the horizontal plane of the staircase, the horizontal plane and the vertical plane of the staircase have the same magnification. Since the video is displayed, it is possible to display less distortion on the horizontal and vertical planes when displaying flowing text instead of river flow. For example, in this case, it is also possible to display a character flowing from the bottom to the top in accordance with the speed of the person climbing the stairs as an image. In particular, when a video is output on a staircase installed in a shopping center or the like, it is effective to output a promotion advertisement or the like as a video. The output advertisement can flow in a certain direction, but can respond to a person on the stairs and prevent or transform the person. For this reason, the attention degree with respect to an advertisement can be raised.

  Furthermore, if the cabinet shown in FIG. 13 is adjusted so that the angle θ of the projection angle with respect to the horizontal plane of the staircase is 45 ° <θ <90 °, the image is enlarged on the vertical plane rather than the horizontal plane of the staircase. Is displayed. In this case, if the projection unit outputs an image in which the flow of the river at a constant speed flows from the upper stairs to the lower stairs, the river flow gives an image effect that seems to flow gently on the horizontal plane, and is vertical. In terms of surface, it gives an image effect that seems to flow down rapidly.

Compared with the general flow of water, when water is actually flowed on the stepped surface, if the flow of water is slow, the flow velocity in the vertical direction is faster than the flow velocity in the horizontal direction. Moreover, compared with the actual general river flow, the flow velocity in the downstream area of the river is about 15 km / h, and when converted, it becomes about 4.2 m / s. Also, when considering only the vertical flow due to gravity acceleration g = 9.8 m / s ² , the vertical flow will be faster than the horizontal flow after about 0.5 seconds. I understand. For this reason, by adjusting the inclination of the cabinet so that the angle θ of the projection angle at the projection section is 45 ° <θ <90 °, an image closer to the actual water or river flow can be displayed. it can.

  If the position information acquisition unit is arranged in parallel with the projection unit as shown in FIG. 13, the image acquired by the video camera as the position information acquisition unit is as shown in FIG. As shown in FIG. 19 (2), the whole body of the person is acquired. For this reason, the video according to the position information is controlled by the control unit so as to output the video according to the position information of the whole body of the person. However, if the position information acquisition unit is installed so as to acquire position information from a direction substantially perpendicular to the horizontal plane of the stairs, the image acquired by the video camera is as shown in FIG. It can be acquired with high accuracy as the position on the horizontal plane of the stairs where a person exists as in 20 (2). For this reason, it becomes possible to control by a control part to output the image | video according to the position where a person exists, and the image close | similar to the actual dynamics of water can be output by a projection part.

  (Simple explanation of effect of embodiment 2) In the image display device of this embodiment having the above-described configuration, particularly when the uneven shape is a staircase shape, the image corresponding to the position information of the object and the staircase shape By displaying, it is possible to improve the amusement in a staircase where it has been difficult to enhance the amusement in the past. Even in places where objects cannot be placed by the Fire Service Act, such as amusement facilities and department store stairs, it is possible to improve the playability without installing playground equipment.

The figure which shows the image | video displayed with the video display apparatus of Embodiment 1. The figure which shows a mode that the image | video displayed according to position information changes Functional block diagram of the video display device of Embodiment 1 1 is a diagram illustrating a hardware configuration of a video display device according to a first embodiment. The figure which shows a mode that a projection part is installed Diagram showing how to project an image by reflecting on a mirror The figure explaining a mode that the image expanded by the screen which has an uneven | corrugated shape is displayed The figure explaining the method of acquiring position information The figure which shows a mode that the projection part and the positional information acquisition part were installed in the cabinet The figure which shows the image | video displayed with the video display apparatus of Embodiment 2. Functional block diagram of the video display device of Embodiment 2 The figure showing the hardware constitutions of the video display apparatus of Embodiment 2. The figure which shows a mode that the video display apparatus of Embodiment 2 is installed. Diagram showing the relationship between the angle θ of the projection angle and the displayed image Illustration explaining the slope of the stairs The figure which shows the image of the stairs in the state where an object does not exist The figure which shows the picture of the state where the object (person) exists on the stairs The figure which shows the image outputted when the object (person) exists on the stairs The figure explaining the positional information acquired when a positional information acquisition part is juxtaposed with a projection part The figure explaining the positional information acquired when a positional information acquisition part is arrange | positioned in the substantially perpendicular direction with respect to the horizontal surface of stairs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1100 Video display apparatus 1101 Projection part 1102 Position information acquisition part 1103 Projection part 1104 Control part 1105 Projection means for staircase screens

Claims (8)

A projection unit for outputting an image having an uneven shape, and an image on which the uneven shape can give an image effect to a screen on which an object can be arranged or moved;
A position information acquisition unit that acquires position information of an object on the screen;
In accordance with the acquired position information, a control unit that controls the image output by the projection unit to change according to the uneven shape;
A video display device.   The said projection part has the fall image | video output means which outputs the image | video which a pattern moves toward the part in a low position from the part in the uneven | corrugated shaped screen as a video which can give an image effect. Video display device.   The video display device according to claim 1, wherein the projection unit includes a staircase screen projection unit that outputs a video image using a staircase as the screen.   The video display device according to claim 3, wherein the projection unit projects at an angle greater than 0 degrees and less than 90 degrees with respect to a horizontal plane of the stairs when viewed from the side going up the stairs.   The image display device according to claim 4, wherein the projection unit projects at an angle of 45 degrees with respect to a horizontal plane of the stairs.   The video display device according to claim 4, wherein the projection unit projects at an angle greater than 45 degrees and less than 90 degrees with respect to a horizontal plane of the stairs.   The video display device according to claim 4, wherein the projection unit projects in a substantially vertical direction with respect to a slope surface of a staircase.   The video display device according to claim 3, wherein the position information acquisition unit acquires position information from a direction substantially perpendicular to a horizontal plane of the stairs.

Images