JP5182544B2 - Video processing system and screen device - Google Patents

Description

The present invention is applicable image processing system in a projector system for projecting an image, such as broadcasting or package media to the screen, and a screen device. Specifically, by automatically forming a plurality of projection areas with different angles on the screen surface, extracting and dividing the video information from the video signal, and irradiating the divided video information to each of the projection areas on the screen, The image is projected on a three-dimensional screen so that a realistic image can be realized.

  2. Description of the Related Art Conventionally, a video signal is input from a broadcast or package media, and a video is projected on a screen by a projector. For example, the projector is arranged on the front side or the back side of the screen, and a player that reproduces an image such as a DVD is connected to the projector to display the image on the screen.

  Usually, an image is displayed on a single plane screen, but there are cases where a plurality of screens are arranged side by side and are arranged so as to surround the viewer. A plurality of projectors are used to irradiate images on the screens arranged in this way. Thereby, a realistic video can be displayed.

  In relation to such a conventional video reproduction method, Patent Document 1 discloses a rear projection display device. According to this rear projection display device, both end portions of the screen move toward the viewer side while the central portion of the screen is fixed. As a result, the screen is deformed from a flat surface to a concave curved surface, so that the viewer receives a feeling of being surrounded by the image having the concave curved surface shape, and the presence is enhanced.

  Patent Document 2 discloses a display. According to this display, two display panels are connected to each other with a predetermined angle, and a partial video of a video to be displayed and its deformation mode are controlled. Thereby, an image without distortion can be displayed regardless of the positional relationship of the display panel.

Japanese Patent Laid-Open No. 10-239769 (page 3, FIG. 2) Japanese Patent Laying-Open No. 2005-115069 (page 9, FIG. 7)

  By the way, according to the video display method according to the conventional example, a projector irradiates a screen on a screen arranged in a shape surrounding a viewer by arranging a plurality of screens side by side. However, when a plurality of screens are combined side by side in this way, the screen occupies the space of the room to reduce the use efficiency of the room space, and the appearance when the screen is not used is poor.

  In addition, when changing the positional relationship of a plurality of screens, the screen is moved manually and the reproducibility of the positional relationship is poor. Furthermore, since a certain amount of labor is required for the movement, there are not so many viewing forms that are easily enjoyed by changing the arrangement of the screen.

  Further, according to the rear projection display device described in Patent Document 1, even if the screen can be formed in a concave curved surface, it is difficult to form a screen shape other than the concave curved surface, and there is a problem that the deformation pattern of the screen is limited. is there. Further, according to the display described in Patent Document 2, the arrangement pattern of the two display panels is limited, and it is difficult to configure a display having a desired shape.

  Therefore, the present invention solves the problems related to the conventional example, and allows a screen having a desired shape to be formed, and also displays an image on a three-dimensionally formed screen to provide a sense of presence. It is an object of the present invention to provide a video processing system, a video processing method, and a screen device that can realize a video.

  In order to solve the above-described problems, a video processing system according to the present invention is a system that processes a video signal and displays a video on a screen, and the screen is wound up or pulled out to expand and contract the screen. Screen expansion / contraction means, projection area forming means for automatically forming a plurality of projection areas with different angles on the screen expanded / contracted by the screen expansion / contraction means, and inputting the video signal, and extracting video information from the video signal And a plurality of projectors for inputting the video information divided by the video processing device and irradiating the divided video information to each of the projection areas of the screen. To do.

  According to the video processing system of the present invention, when the video signal is processed and the video is displayed on the screen, the screen expansion / contraction means winds the screen or pulls out the screen to expand and contract the screen. The projection area forming means automatically forms a plurality of projection areas with different angles on the screen expanded and contracted by the screen expansion and contraction means. The video processing device extracts video information from the video signal and divides it. The plurality of projectors irradiate each of the projection areas of the screen with the video information divided by the video processing device. Thereby, an image can be projected on a screen on which a plurality of projection areas having different angles are formed.

  In order to solve the above-described problems, a screen device according to the present invention includes a screen that displays an image to be irradiated, a screen expansion / contraction unit that retracts the screen or retracts the screen by pulling out the screen, and the screen. Projection area forming means for extruding and dividing predetermined portions of the screen expanded and contracted by the expansion / contraction means and automatically forming a plurality of projection areas with different angles on the screen is provided.

  With the screen device according to the present invention, the screen displays the image to be irradiated. The screen expansion / contraction means expands or contracts the screen by winding the screen or pulling out the screen. The projection area forming means pushes and separates predetermined portions of the screen expanded and contracted by the screen expansion / contraction means, and automatically forms a plurality of projection areas having different angles on the screen. As a result, it becomes possible to project a video in three dimensions using a plurality of projectors.

According to the video processing system of the present invention, when a video signal is processed to display a video on a screen, a plurality of projection areas having different angles are automatically formed on the screen, and each of the projection areas of these screens is formed. In addition, the divided video information is irradiated.

  With this configuration, an image can be projected on a three-dimensionally formed screen. This makes it possible to realize a realistic video image.

  According to the screen device of the present invention, there is provided projection area forming means for extruding and separating a predetermined portion of the screen that is wound or pulled out and expanded and contracted, and automatically forming a plurality of projection areas having different angles. .

  With this configuration, the shape of the screen can be three-dimensionally deformed. Therefore, by irradiating an image on a three-dimensionally formed screen, it is possible to project a realistic image close to reality.

  Subsequently, an embodiment of a video processing system, a video processing method, and a screen device according to the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration example of a rear projection system 100 as a first embodiment according to the present invention. A rear projection (rear projection type) system 100 shown in FIG. 1 inputs a video signal from a broadcast, package media, or the like, and projects a video on the screen from the back. The rear projection system 100 includes a video processing device 1, three projectors 2L, 2C, and 2R and a screen device 3, and is built in a wall of a room, for example. Thereby, the use efficiency of the space of a room can be raised. The three projectors 2L, 2C, and 2R are installed behind the screen device 3, and irradiate each projection area of the screen device 3 with an image.

  The screen device 3 includes screen telescopic columns 4L and 4R, a screen region forming mechanism 5 and a screen 10. The left and right screen expansion / contraction columns 4L and 4R function as an example of a screen expansion / contraction means. The screen 10 is wound or the screen 10 is pulled out to expand and contract the screen 10. In this example, the screen telescopic columns 4L and 4R are rotatably installed on both side ends of the frame 11 of the opening opened in the wall.

  The screen area forming mechanism 5 constitutes an example of a projection area forming means. The screen area forming mechanism 5 extrudes a predetermined portion of the screen 10 that is expanded and contracted by the screen expansion / contraction columns 4L and 4R and divides a plurality of projection areas having different angles automatically on the screen 10. Form. In this example, the screen region forming mechanism 5 includes ball screw mechanisms 6L and 6R, poles 7L and 7R, and screen drive units 8L and 8R that function as an example of a drive unit. The screen drive unit 8L drives the ball screw mechanism 6L, and the screen drive unit 8R drives the ball screw mechanism 6R. The ball screw mechanisms 6L and 6R function as an example of a moving mechanism, and convert rotational motion into linear motion. One end of the ball screw mechanism 6L is rotatably attached to the screen telescopic column 4L, and one end of the ball screw mechanism 6R is rotatably attached to the screen extendable column 4R. The poles 7L and 7R are an example of a region partition member, and partition the screen 10 to provide projection regions having different angles. The pole 7L moves on the ball screw mechanism 6L, and the pole 7R moves on the ball screw mechanism 6R. In addition, a transparent acrylic resin or the like is used for the material of the poles 7L and 7R so as not to disturb the visual. Further, the ball screw mechanisms 6L and 6R are used as the moving mechanism. However, the mechanism is not limited to this, and any mechanism that can move the pole, such as an air cylinder, may be used.

  The video processing device 1 extracts video information from a video signal input from broadcast or package media, and divides the video signal into three video information SDL, SDC, and SDR.

  In this example, the video processing apparatus 1 includes a video composition analysis unit 22 (see FIG. 6) that analyzes the composition of the video based on the extracted motion vector of the video information. The video processing device 1 divides the video information into three video information SDL, SDC, and SDR based on the result analyzed by the video composition analysis unit 22 and outputs control signals SRin and SLin for controlling the screen shape. Generate.

  The video processing apparatus 1 is connected to the left and right screen drive units 8L and 8R, outputs the generated control signal SLin to the screen drive unit 8L, and outputs the control signal SRin to the screen drive unit 8R. The screen drivers 8L and 8R drive each of the ball screw mechanisms 6L and 6R based on the control signals SLin and SRin to automatically form a plurality of projection areas with different angles on the screen 10.

  The video processing apparatus 1 is connected to projectors 2L, 2C, and 2R, which are examples of a plurality of projectors, and outputs the divided three pieces of video information SDL, SDC, and SDR to each of the projectors. In this example, the video processing device 1 outputs video information SDL to the projector 2L, outputs video information SDC to the projector 2C, and outputs video information SDR to the projector 2R. The video processing apparatus 1 outputs composition information to the projectors 2L to 2R.

  The projectors 2L, 2C, and 2R change the projection direction of the projector based on the corresponding video information and composition information, and irradiate each of the projection areas of the screen 10 with the video information. Thereby, an image can be projected on the screen 10 formed in a desired shape. Accordingly, it is possible to realize a realistic video image.

  FIG. 2 is a perspective view illustrating a configuration example of a main part of the screen region forming mechanism 5. The ball screw mechanism 6L of the screen region forming mechanism 5 shown in FIG. 2 includes a rail 6a, a ball screw shaft 6b, a nut 6c, and a motor 6d. One end of the rail 6a of the ball screw mechanism 6L is rotatably attached to the lower end of the screen telescopic column 4L. In this example, a motor 6e for rotating the rail 6a is attached to the lower end of the screen telescopic column 4L. As the motor 6e rotates, the rail 6a rotates around the screen telescopic column 4L as a rotation axis.

  A groove 6g is formed in the rail 6a, and a ball screw shaft 6b is installed in the groove 6g. A rotating shaft of a motor 6d is coupled to one end of the ball screw shaft 6b. A nut 6c is screwed onto the ball screw shaft 6b. A pole 7L is attached to the nut 6c. The nut 6c is slidably engaged with the groove 6g of the rail 6a.

  With this configuration, when the motor 6d rotates forward, for example, the ball screw shaft 6b rotates forward and the nut 6c advances in the direction of arrow W on the rail 6a. When the motor 6d rotates in the reverse direction, the ball screw shaft 6b rotates in the reverse direction and the nut 6c advances on the rail 6a in the direction opposite to the arrow W. Accordingly, the screen 7 can be pushed out and separated by the pole 7L attached to the nut 6c, and projection areas with different angles can be automatically formed on the screen 10.

  The screen extendable column 4L winds up the screen 10 in accordance with the movement of the pole 7L, or the screen 10 is pulled out to expand and contract the screen 10. In this example, the screen telescopic column 4L incorporates a mainspring spring (not shown), and a winding shaft for winding the screen 10 is engaged with the mainspring spring. Thereby, the force which winds up the screen 10 is always acting on the screen telescopic column 4L.

  Although the left ball screw mechanism 6L has been described, of course, the right ball screw mechanism 6R is similarly configured and operated by a rail 6a, a ball screw shaft 6b, a nut 6c, and a motor 6d.

  FIG. 3 is a cross-sectional view showing a configuration example of the ball screw mechanism 6L. The ball screw mechanism 6L shown in FIG. 3 is a view cut perpendicularly to the longitudinal direction of the ball screw mechanism 6L. The shape of the nut 6c screwed to the ball screw shaft 6b of the ball screw mechanism 6L is a T shape. The flange 6h of the T-shaped nut 6c is guided by the groove 6g of the rail 6a. Thereby, the nut 6c guided by the groove 6g of the rail 6a advances on the rail 6a while maintaining the posture when the ball screw shaft 6b rotates. Therefore, the pole 7L vertically attached to the upper surface of the nut 6c moves on the rail 6a while maintaining a substantially vertical state.

  4A to 4D are explanatory diagrams illustrating examples of irradiation on the screen 10 by the projectors 2L, 2C, and 2R. 4A is a schematic perspective view of the screen region forming mechanism 5, and the screen 10 shown in FIG. 4A is set in a planar shape. Each of the projectors 2L, 2C, and 2R shown in FIG. 4B irradiates a predetermined area of the screen 10 with respect to the flat screen.

  FIG. 4C is a schematic perspective view of the screen region forming mechanism 5. The screen 10 shown in FIG. 4C is divided into a left screen 10L, a central screen 10C, and a right screen 10R, and is set in a three-dimensional shape. Each of the projectors 2L, 2C, and 2R shown in FIG. 4D irradiates a predetermined area of the screen 10 with respect to this three-dimensional screen (three-side screen). In this example, the projector 2L irradiates the left screen 10L, the projector 2C irradiates the center screen 10C, and the projector 2R irradiates the right screen 10R.

  FIG. 5 is an explanatory diagram illustrating a control example of the positions of the projectors 2L, 2C, and 2R. Projectors 2L, 2C, and 2R shown in FIG. 5 change the projection direction by moving the position of the projector based on the composition information. In this example, the projectors 2L, 2C, and 2R are moved by, for example, an electric XY stage.

When determining the position of the projector 2L (x1, y1), the size of the left screen 10L and size r _1, the minimum distance the minimum projector projection distance to illuminate the left screen 10L of this size r ₁ "d ( r ₁ ) min ”.

At this time, the position (x1, y1) of the projector 2L is obtained by the equations (1) and (2).
x1 = 1 / 2r ₁ · cos (θ ₁ )-d (r ₁ ) min · sin (θ ₁ ) (1)
y1 = 1 / 2r ₁ · sin (θ ₁ ) + d (r ₁ ) min · cos (θ ₁ ) (2)

Also, the size of the center screen 10C and size r _3, the display surface of the center screen 10C, the angle formed between the line connecting the two screens expandable column 4L and 4R (see FIG. 1) theta ₃ and To do. In this case, when determining the position of the projector 2C (x2, y2), the size r ₃ of the central screen 10C is obtained by the equation (3).
r ₃ = (D1-r ₁ cosθ ₁ -r ₂ cosθ ₂ ) / cosθ ₃ (3)
The minimum projector projection distance at this time is defined as a minimum distance “d (r ₃ ) min”.

At this time, the center position CP (xp2, yp2) of the center screen 10C is obtained by the equations (4) and (5).
xp2 = r ₁ cosθ ₁ + 1 / 2r ₃ cos (θ ₃ ) (4)
yp2 = r ₁ sinθ ₁ + 1 / 2r ₃ sin (θ ₃ ) (5)

From the above, the position (x2, y2) of the projector 2C is obtained by the equations (6) and (7).
x2 = xp2-d (r ₃ ) min · sin (θ ₃ ) (6)
y2 = yp2 + d (r ₃ ) min · cos (θ ₃ ) (7)

In this way, the positions of the projectors 2L and 2C are controlled. Further, the position of the projector 2R is controlled in the same manner as the projector 2L. Note that θ ₃ is a value (r ₁ , r ₂ , θ ₁ ,...) Given by an angle sensor provided on the rotating shafts of the ball screw mechanisms 6L and 6R and the rail 6a (see FIG. 2) according to the following equation (8). θ ₂ ).
θ ₃ = tan ^-1 (r ₁ sinθ ₁ -r ₂ sinθ ₂ ) / (D1-r ₁ cosθ ₁ -r ₂ cosθ ₂ ) (8)

  When the shape of the screen 10 is deformed and set to the shape of the screen 10 ', it moves to the positions of the projectors 2L' and 2C 'in the drawing. Also in this case, the position of the projector is controlled in the same manner as the projectors 2L and 2C.

Note that the minimum distances “d (r ₁ ) min” and “d (r ₃ ) min” are values that are uniquely determined from the specifications of the lens of the projector to be used. Although the minimum distance is used as the projector distance, this is to increase the screen surface brightness. When the brightness is not required, the minimum distance is not necessary. Also, the orientation is adjusted so that it is perpendicular to the screen surface, and when it is outside the variable range of the above mechanism, a lens shift or the like is also used.

  FIG. 6 is a block diagram illustrating a configuration example of a control system of the video processing apparatus 1. The control system of the video processing apparatus 1 shown in FIG. 6 includes a video information dividing unit 20, a video geometric conversion unit 21, a video composition analysis unit 22, and a screen shape control unit 23.

  The video composition analysis unit 22 functions as an example of a video composition analysis unit, and inputs the video signal SDin from the input terminal 24 of the video processing device 1. The video composition analysis unit 22 extracts video information (pixel information) such as luminance information and color difference information for each video frame from the input video signal SDin. After the extraction, the video composition analysis unit 22 detects a motion vector related to the video frame using a block matching method or the like, analyzes the video composition based on the motion vector, and outputs the composition information SP to the screen shape control unit 23. Output to.

  In this example, the video composition analysis unit 22 determines that a portion where the magnitude of the motion vector related to the frame greatly changes is a video boundary, and determines to divide the video composition into three based on the determination result. Composition information SP is created. Also, the video composition analysis unit 22 determines a portion where the direction of the motion vector relating to the frame changes as a video boundary, determines the video composition based on the determination result, and creates the composition information SP. Further, the video composition analysis unit 22 determines the video boundary based on both the information on the part where the magnitude of the motion vector changes greatly and the part where the direction of the motion vector changes, and based on the determination result. The composition of the video is determined and composition information SP is created. The video composition analysis unit 22 outputs the created composition information SP to the screen shape control unit 23.

  The screen shape control unit 23 is connected to the video composition analysis unit 22 and receives composition information SP from the video composition analysis unit 22. The screen shape control unit 23 generates control signals SRin and SLin for controlling the shape of the screen 10 based on the composition information SP. The screen shape control unit 23 outputs the control signal SLin to the screen driving unit 8L, and outputs the control signal SRin to the screen driving unit 8R.

  The screen drivers 8L and 8R drive each of the ball screw mechanisms 6L and 6R based on the control signals SLin and SRin to automatically form a plurality of projection areas with different angles on the screen 10. For example, as shown in FIG. 2, the screen drive unit 8L drives the motor 6e attached to the lower end of the screen telescopic column 4L, and the rail of the ball screw mechanism 6L coupled to the rotation shaft of the motor 6e. Rotate 6a.

  Further, the screen drive unit 8L drives the motor 6d of the ball screw mechanism 6L to rotate the ball screw shaft 6b in the rail 6a coupled to the rotation shaft of the motor 6d, and on the ball screw shaft 6b. The nut 6c is advanced to run on the rail 6a. In this manner, the screen 10 is pushed out and separated by the pole 7L attached to the nut 6c, and projection areas having different angles are automatically formed on the screen 10.

  The video information dividing unit 20 is connected to the video composition analyzing unit 22 and divides the video signal SDin into three pieces of video information SDL ′, SDC ′, and SDR ′ based on the composition information SP output by the video composition analyzing unit 22. .

  For example, when the composition information SP is information that divides a frame by one third at regular intervals, the video information dividing unit 20 first stores the video information of the entire frame in a memory, and the video information is stored from the stored video information. The left third of the information (pixel) is read out and output to the video geometric transformation unit 21 as video information SDL ′. Further, the video information dividing unit 20 reads the central third of the video information and outputs it to the video geometric conversion unit 21 as the video information SDC ′. In addition, the video information dividing unit 20 reads the right third of the video information and outputs it to the video geometric conversion unit 21 as video information SDR ′.

  The video geometric conversion unit 21 functions as an example of a video geometric conversion unit and is connected to the video information dividing unit 20. The video geometric conversion unit 21 inputs the video information SDL ′, SDC ′, and SDR ′ from the video information dividing unit 20. The video geometric conversion unit 21 is connected to the video composition analysis unit 22 and receives composition information SP from the video composition analysis unit 22. The video geometric transformation unit 21 geometrically transforms the video information SDL ′, SDC ′, SDR ′ based on the composition information SP (for example, affine transformation) to obtain video information SDL, SDC, SDR.

  Here, affine transformation refers to transformation that preserves the geometric properties, such as the points that are aligned on a straight line in the original figure are aligned on the straight line after conversion, and the parallel lines are parallel lines after conversion. Say. Thereby, when the screen 10 is irradiated with an image, the image displayed on the screen 10 can be prevented from being distorted. After the affine transformation, the video geometric conversion unit 21 outputs the video information SDL to the projector 2L, outputs the video information SDC to the projector 2C, and outputs the video information SDR to the projector 2R.

  The projectors 2L to 2R are connected to the video geometric conversion unit 21, and input video information SDL, SDC, SDR from the video geometric conversion unit 21. Further, the projectors 2L to 2R are connected to the video composition analysis unit 22 and input the composition information SP from the video composition analysis unit 22. The projectors 2L to 2R change the projection direction of the projector based on the composition information SP and project the video information SDL, SDC, SDR on the screen 10 (see FIG. 5). As a result, a screen 10 having a desired shape can be formed, and an image can be projected on the three-dimensionally formed screen 10. Accordingly, it is possible to realize a realistic video image.

  Next, a video processing example of the video composition analysis unit 22 will be described with reference to FIGS. 7A and 7B are explanatory diagrams illustrating an example of a moving image process of the video composition analysis unit 22. In this example, the video composition analysis unit 22 obtains a motion vector of a moving image using a block matching method.

  Here, in the block matching method, first, a small area including an image whose motion is to be detected is stored as a block in the previous frame of two consecutive frames to be processed. Next, in the subsequent frame, the image similarity is obtained in an area having the same size as the previous block (a block in the comparison area). Further, the similarity is similarly obtained by shifting the comparison region in the frame. This is done for the entire area of the frame. Of these, the region with the highest similarity is the region where the image of the object whose motion is to be detected has moved. A movement distance and a movement direction are obtained from the coordinates of this area and the coordinates of the previous block stored in advance, and set as a motion vector. Since the block matching method obtains the similarity with the target block in the entire frame area, the processing amount is enormous. Therefore, if the region around the image of the object part whose movement is to be detected is used as a matching region, the entire frame is not searched, so that the processing amount can be reduced.

  The moving image frame 30 of the image shown in FIG. 7A is a moving image frame 30 of the image projected by the camera in the driver's seat of the running train. FIG. 7B is a schematic diagram illustrating an example of a motion vector related to the moving image frame 30. The moving directions of the motion vectors H, I, and J of the moving image frame 30 illustrated in FIG. 7B are directions in which the moving vectors H, I, and J move diagonally upward to the left from the center of the moving image frame 30. In addition, the motion vectors H, I, and J have the smallest motion vector H at the center of the moving image frame 30, and the smaller the motion vector I at the center left of the moving image frame 30. The motion vector J is the largest.

  In addition, the moving direction of the motion vectors K, L, and M in a direction different from that of the moving image frame 30 is a direction in which the moving vectors K, L, and M move diagonally right upward from the center of the moving image frame 30. In addition, the motion vectors K, L, and M have the smallest motion vector K at the center of the moving image frame 30, and then the motion vector L at the center right of the moving image frame 30 is small, and the right side of the moving image frame 30. The motion vector M is the largest.

  At this time, the video composition analysis unit 22 shown in FIG. 6 determines that the line connecting the movement start positions X of the motion vectors J having a large motion vector related to the moving image frame 30 is the first boundary of the video and divides the video. The line P is determined, and the line connecting the movement start positions Y of the motion vectors M having a large motion vector is determined as the second boundary of the video and determined as the dividing line Q. After the determination, the video composition analysis unit 22 divides the moving picture frame 30 by the dividing line P and the dividing line Q, and creates composition information SP for dividing the moving picture frame 30 into the regions BAL, BAC, and BAR to form the screen shape. The data is output to the control unit 23, the video information dividing unit 20, and the like.

  The screen shape control unit 23 generates control signals SRin and SLin for controlling the shape of the screen 10 based on the composition information SP and outputs the control signals SRin and SLin to the screen drive units 8L and 8R. The screen drivers 8L and 8R drive the ball screw mechanisms 6L and 6R based on the control signals SLin and SRin. The poles 7L and 7R engaged with the ball screw mechanisms 6L and 6R extrude and partition the screen 10 as shown in FIG. 7C, and automatically form projection areas 10L, 10C and 10R with different angles on the screen 10. To do.

  On the other hand, the video information dividing unit 20 divides the video signal SDin into three pieces of video information SDL ′, SDC ′, and SDR ′ based on the composition information SP, and outputs the video information SDin to the video geometric conversion unit 21. The video geometric conversion unit 21 presents the divided video as it is with respect to the area BAC of the moving image frame 30 of the video information SDC ′, and the display screen on the areas BAL and BAR of the still image frame 31 of the video information SDL ′ and SDR ′. Performs affine transformation so that the side screen observed from the position of the viewing point Z in FIG.

  When the dividing line P or the dividing line Q is not a straight line as in the above example, the video composition analysis unit 22 corrects the dividing line P or the dividing line Q to be vertical. For example, the video composition analysis unit 22 obtains a center point of a line segment that is at a distance equal to each of the movement start positions X, and sets a perpendicular passing through the center point as a dividing line P.

  8A to 8D are explanatory diagrams illustrating an example of still image processing of the video composition analysis unit 22. The video still image frame 31 shown in FIG. 8A is a video still image frame 31 in which a street in a shopping street is projected by a fixed camera. First, the video composition analysis unit 22 performs edge detection and long line segment detection of the still image frame 31 in FIG. 8A to extract component lines E1 to H1 of the main composition shown in FIG. 8B. For example, when detecting an edge, a Sobel operator that detects a sudden change in shading is applied. When obtaining a long line segment, threshold processing is performed on the basis of 1/3 or more of the horizontal length of the still image frame 31.

  Next, as shown in FIG. 8B, for example, when the shape of the component lines E1 to H1 of the extracted still image frame 31 has a vanishing point near the center of the screen, the video composition analysis unit 22 When projected onto the screen 10, the height X1 of the component line E1 and the component line F1 in FIG. 8C is, for example, 180 cm, and the height X2 of the component line G1, and the component line H1, is, for example, 180 cm. The dividing lines P and Q are determined. This is determined so that the scenery on the screen 10 can be felt almost at full size at the viewing point Z (see FIG. 7C). The video composition analysis unit 22 creates composition information SP for dividing the still image frame 31 into regions BAL, BAC, and BAR based on the determined dividing lines P and Q.

  Although the same processing can be performed for other compositions, only typical examples are described here.

  Strictly speaking, the above processing relating to the still image frame 31 does not faithfully reproduce the three-dimensional positional relationship of the subject on the three screens 10L, 10C, and 10R. (To that end, shooting information such as lens parameters is necessary and cannot be obtained only from normal images.) Although it is not true to reality, it aims to become an effective image expression by reproducing the three-dimensional shape to some extent. Is.

  FIGS. 9A and 9B are explanatory diagrams illustrating an example of video processing of a moving image or a still image of the video composition analysis unit 22. In this example, the video signal SDin is superimposed with a moving picture or still picture frame 32 shown in FIG. 9A and corner information P ′ and Q ′ indicating the front and side boundaries of the frame 32. The video composition analysis unit 22 extracts the corner information P ′ and Q ′ superimposed on the video signal SDin, analyzes the composition of the video based on the corner information P ′ and Q ′, and converts the frame 32 into the regions BAL and BAC. , Composition information SP to be divided into three BARs is created. As a result, a video image projected in two dimensions is reproduced as a three-dimensional video image in a pseudo manner, and a feeling of being surrounded in an actual space can be obtained.

  A frame 32 shown in FIG. 9B is an enlarged view of the frame 32 shown in FIG. 9A. The angle information P ′ and Q ′ shown in FIG. 9B indicate the positions moved to both sides of the frame 32 in association with the zoom enlargement. The video composition analysis unit 22 creates composition information SP for dividing the frame 32 into three regions BAL, BAC, and BAR based on the corner information P ′ and Q ′ moved to both sides of the frame 32.

  FIG. 10 is a flowchart showing an operation example of the rear projection system 100. In step S1 shown in FIG. 10, the video processing apparatus 1 of the rear projection system 100 inputs the video signal SDin from broadcasting, package media, or the like, and proceeds to step S2.

  In step S2, the video composition analysis unit 22 of the video processing device 1 analyzes the composition of the video frame of the video signal SDin. For example, the video composition analysis unit 22 detects a motion vector related to the video frame using a block matching method or the like, analyzes the video composition based on the motion vector, and divides the video frame by dividing lines P and Q. Then, composition information SP for dividing the video frame into regions BAL, BAC, and BAR is created.

  At this time, if a motion vector having a predetermined size is not detected, this video frame is determined to be a still image frame 31, and the video composition analysis unit 22, as shown in FIG. Detection and long line segment detection are performed, the component lines of the main composition are extracted, and the dividing lines P and Q are determined based on the component lines. After the determination, the video composition analysis unit 22 creates composition information SP for dividing the still image frame 31 into regions BAL, BAC, and BAR based on these dividing lines P and Q.

  Further, as shown in FIGS. 7 and 9, regardless of the moving image frame 30 or the still image frame 31, the moving image or still image frame 32 and the angle information P ′, Q in the frame 32 are added to the video signal SDin in advance. 'May be superimposed. In this case, the video composition analysis unit 22 extracts the corner information P ′ and Q ′ superimposed on the video signal SDin, analyzes the composition of the video based on the corner information P ′ and Q ′, and sets the frame 32 as a region. Composition information SP for dividing into BAL, BAC, and BAR is created. Subsequently, the process proceeds to steps S3, S4, and S7.

  In step S3, the screen shape control unit 23 controls the screen shape based on the composition information SP. In this example, the screen shape control unit 23 generates control signals SRin and SLin for controlling the shape of the screen 10 based on the composition information SP. The screen shape control unit 23 outputs the control signal SLin to the screen drive unit 8L (see FIG. 1), and outputs the control signal SRin to the screen drive unit 8R. The screen drivers 8L and 8R drive each of the ball screw mechanisms 6L and 6R based on the control signals SLin and SRin to automatically form a plurality of projection areas with different angles on the screen 10. For example, as shown in FIG. 2, the screen drive unit 8L drives the motor 6e attached to the lower end of the screen telescopic column 4L, and the rail of the ball screw mechanism 6L coupled to the rotation shaft of the motor 6e. Rotate 6a. The screen drive unit 8L drives the motor 6d of the ball screw mechanism 6L to rotate the ball screw shaft 6b coupled to the rotation shaft of the motor 6d, and advances the nut 6c on the ball screw shaft 6b. And run on the rail 6a. In this way, the screen 10 is pushed out and separated by the pole 7L attached to the nut 6c, and projection areas having different angles are automatically formed on the screen 10, and the process proceeds to step S10.

  In step S4, the video information dividing unit 20 divides the video signal SDin into three video information SDL ', SDC', and SDR 'based on the composition information SP at the same timing as in step S3. For example, the video information dividing unit 20 first stores the video information of the entire frame in the memory, and the stored video information is stored in the video information SDL ′, SDC ′ based on the areas BAL, BAC, BAR indicated by the composition information SP. The image is divided into three SDR's and output to the video geometric conversion unit 21, and the process proceeds to step S5.

  In step S5, the video geometric transformation unit 21 inputs video information SDL ', SDC', SDR 'and composition information SP. The video geometric conversion unit 21 affine-transforms the video information SDL ′, SDC ′, SDR ′ based on the composition information SP to generate video information SDL, SDC, SDR, and proceeds to step S6.

  In step S6, the video geometric conversion unit 21 outputs the generated video information SDL, SDC, and SDR to the projectors 2L to 2R, and proceeds to step S10.

In steps S7 and S8, at the same timing as in step S3 described above, the projectors 2L to 2R calculate and move the position of the projector based on the composition information SP, and change the projection direction. For example, as shown in FIG. 5, the projector 2L is the size of the left screen 10L and size r _1, the minimum distance the minimum projector projection distance to illuminate the left screen 10L of this size r ₁ "d ( r ₁ ) min ”, the position (x1, y1) of the projector 2L is calculated by the above formulas (1) and (2). Further, the focus is obtained and the process proceeds to step S9.

  In step S9, the projectors 2L to 2R drive and move the electric XY stage based on the calculation result to adjust the projection direction. In addition, the projectors 2L to 2R adjust the focus and shift to step S10.

  In step S <b> 10, the projectors 2 </ b> L to 2 </ b> R display the video information SDL, SDC, and SDR on the screen 10. For example, the projector 2L displays the video information SDL on the left screen 10L, the projector 2C displays the video information SDC on the central screen 10C, and the projector 2R displays the video information SDR on the right screen 10R, and goes to step S11. Transition.

  In step S11, the video processing device 1 determines whether or not the video signal SDin has ended. If the video signal SDin has not ended, the process returns to step S1 to input the video signal SDin again. When the video signal SDin ends, the video processing ends.

  As described above, according to the rear projection system 100 as the first embodiment of the present invention, when the video signal SDin is processed and an image is displayed on the screen 10, projection areas having different angles are displayed on the screen 10. A plurality of images are automatically formed, video information is extracted from the video signal SDin, divided into three video information SDL, SDC, and SDR, and the video information is irradiated to each projection area of the screen 10. In this example, the video information is divided based on the composition information SP analyzed by the video composition analysis unit 22, and a plurality of projection areas having different angles are automatically formed on the screen 10 based on the composition information SP.

  Thereby, an image can be projected on the three-dimensionally formed screen 10. Accordingly, it is possible to realize a realistic video image.

  Further, according to the screen device 3 according to the first aspect of the present invention, the projection region is formed by extruding and separating predetermined portions of the screen 10 that is wound or pulled out and expanded and contracted, and automatically forming a plurality of projection regions having different angles. Means are provided.

  Thereby, the shape of the screen 10 can be three-dimensionally deformed. Therefore, by irradiating an image on the three-dimensionally formed screen 10, it is possible to project an image with a realistic feeling close to reality.

  FIG. 11 is a block diagram showing a configuration example of a control system of the video processing apparatus 50 as the second embodiment according to the present invention. The control system of the video processing device 50 shown in FIG. 11 includes a video information dividing unit 20, a video geometric conversion unit 21, a video area analysis unit 22 ′, an operation unit 51, and a screen shape detection unit 52. The same components as those in the video processing apparatus 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The operation unit 51 is operated by a user and outputs an operation signal SOP to operate the screen region forming mechanism 5. For example, the operation unit 51 includes a rotation button for rotating the rail 6a of the ball screw mechanisms 6L and 6R in the screen region forming mechanism 5 shown in FIG. 2, and a pole 7L coupled to the nut 6c on the rail 6a. , 7R is provided. The user operates the rotation button and the movement button of the operation unit 51 to set the XY positions of the poles 7L and 7R. At this time, the operation unit 51 outputs an operation signal SOP to the screen drive units 8L and 8R of the screen region forming mechanism 5.

  The screen drive units 8L and 8R automatically form a plurality of projection areas with different angles on the screen 10 based on the operation signal SOP from the operation unit 51. For example, the screen driving units 8L and 8R drive the motor 6e shown in FIG. 2 based on the operation signal SOP and rotate the rails 6a of the ball screw mechanisms 6L and 6R coupled to the rotation shaft of the motor 6e. . Further, the screen drive units 8L and 8R drive the motor 6d shown in FIG. 2 based on the operation signal SOP, and rotate the ball screw shaft 6b coupled to the rotation shaft of the motor 6d to couple to the nut 6c. The poles 7L and 7R thus moved are moved. Thereby, the shape of the screen 10 can be set by the user's operation.

  The screen shape detection unit 52 functions as an example of a detection unit, detects the shape of the screen 10 from the drive signals SLout and SRout input from the screen drive units 8L and 8R, and uses the screen shape detection signal SFT as the video processing device 50 and the projector. Output to 2L, 2C, 2R. The drive signals SLout and SRout include the rotation angle of the rail 6a and the movement distances of the poles 7L and 7R that move on the rail 6a. In order to obtain the rotation angle of the rail 6a, the screen driving units 8L and 8R include an angle sensor (not shown) on the rotation axis of the rail 6a. The angle sensor detects the rotation angle of the rail 6a. Alternatively, a stepping motor may be used for the motor 6e that rotates the rail 6a, and the rotation angle of the rail 6a may be obtained by detecting the number of steps of the stepping motor.

  Next, in order to obtain the moving distance of the poles 7L and 7R that move on the rail 6a, a stepping motor is used as the motor 6d that drives the poles 7L and 7R, and the number of steps of the stepping motor is detected to detect the poles 7L and 7R. The moving distance of 7R is obtained. Alternatively, a plurality of reflective photosensors may be mounted on the rail 6a, and the nuts 6c coupled to the poles 7L and 7R may be detected by these photosensors.

  The video processing device 50 divides the video information based on the screen shape detection signal SFT from the screen shape detection unit 52. In this example, the video region analysis unit 22 'of the video processing device 50 analyzes and determines the video region based on the detection signal SFT indicating the positions of the poles 7L and 7R. For example, the video region analysis unit 22 ′ determines the dividing line P and the dividing line Q that divide the frame shown in FIG. 7B from the XY position information of the poles 7L and 7R of the detection signal SFT, and divides the frame into the region BAL. , BAC, and BAR are divided into three, and are output to the video information dividing unit 20 and the video geometric transformation unit 21.

  Note that the video region analysis unit 22 ′ has created the region segment information SP ′ for dividing the frame based on the screen-shaped detection signal SFT. For example, the composition analysis based on the motion vector shown in the first embodiment The video information may be divided based on both information of the result and the detection signal SFT.

  The video information dividing unit 20 divides the video signal SDin into three pieces of video information SDL ′, SDC ′, and SDR ′ based on the region division information SP ′ and outputs the divided video signal SDin to the video geometric conversion unit 21. The video geometric transformation unit 21 geometrically transforms (for example, affine transformation) the video information SDL ′, SDC ′, and SDR ′ based on the region segment information SP ′ to obtain the video information SDL, SDC, and SDR, and the projectors 2L, 2C, and 2R. Output to.

  The projectors 2L to 2R project the video information SDL, SDC, and SDR on the screen 10 by changing the projection direction of the projector based on the screen-shaped detection signal SFT. As a result, a screen 10 having a desired shape can be formed, and an image can be projected on the three-dimensionally formed screen 10. Accordingly, it is possible to realize a realistic video image.

  FIG. 12 is a flowchart showing an operation example of the rear projection system 200. In step T1 shown in FIG. 12, in the screen region forming mechanism 5 of the rear projection system 200, the operation unit 51 is operated by the user, the operation signal SOP is input from the operation unit 51, and the process proceeds to step T2.

  In step T <b> 2, the screen driving units 8 </ b> L and 8 </ b> R of the screen region forming mechanism 5 automatically form a plurality of projection regions with different angles on the screen 10 based on the operation signal SOP from the operation unit 51. For example, the screen driving units 8L and 8R drive the motor 6e shown in FIG. 2 based on the operation signal SOP and rotate the rails 6a of the ball screw mechanisms 6L and 6R coupled to the rotation shaft of the motor 6e. . Further, the screen drive units 8L and 8R drive the motor 6d shown in FIG. 2 based on the operation signal SOP, and rotate the ball screw shaft 6b coupled to the rotation shaft of the motor 6d to couple to the nut 6c. The poles 7L and 7R thus moved are moved, the shape of the screen 10 is deformed by the poles 7L and 7R, and the process proceeds to step T3.

  In step T3, the screen shape detection unit 52 detects the shape of the screen 10 from the drive signals SLout and SRout input from the screen drive units 8L and 8R, and outputs the screen shape detection signal SFT to the video processing device 50 and the projectors 2L and 2C. 2R.

  The drive signals SLout and SRout include the rotation angle of the rail 6a and the movement distances of the poles 7L and 7R that move on the rail 6a. In order to obtain the rotation angle of the rail 6a, the screen driving units 8L and 8R detect the rotation angle of the rail 6a by an angle sensor provided on the rotation axis of the rail 6a.

  Next, in order to obtain the moving distance of the poles 7L and 7R that move on the rail 6a, a stepping motor is used as the motor 6d that drives the poles 7L and 7R, and the number of steps of the stepping motor is detected to detect the poles 7L and 7R. The moving distance of 7R is obtained. Subsequently, the process proceeds to step T4.

  In step T4, the video processing apparatus 50 inputs the video signal SDin from broadcasting, package media, or the like, and proceeds to step T5.

  In step T5, the video area analysis unit 22 'of the video processing apparatus 50 analyzes the video frame area of the video signal SDin. In this example, the video region analysis unit 22 'analyzes the video region based on the screen-shaped detection signal SFT obtained in step T3. For example, the video region analysis unit 22 ′ determines the dividing line P and the dividing line Q that divide the frame shown in FIG. 7B from the XY position information of the poles 7L and 7R of the detection signal SFT, and divides the frame into the region BAL. , BAC, and BAR are divided into three, and are output to the video information dividing unit 20 and the video geometric transformation unit 21. In addition, the video region analysis unit 22 ′ creates region segment information SP ′ based on both information of the screen-shaped detection signal SFT and the composition analysis result based on the motion vector shown in the first embodiment. Also good. Subsequently, the process proceeds to step T6.

  In step T6, the video information dividing unit 20 divides the video signal SDin into three pieces of video information SDL ', SDC', and SDR 'based on the area segment information SP', and proceeds to step T7.

  In step T7, the video geometric conversion unit 21 inputs the divided video information SDL ', SDC', SDR 'and region segment information SP'. The video geometric conversion unit 21 affine-transforms the video information SDL ', SDC', and SDR 'based on the region segment information SP' to generate video information SDL, SDC, and SDR, and proceeds to step T8.

  In step T8, the video geometric conversion unit 21 outputs the generated video information SDL, SDC, SDR to the projectors 2L to 2R, and proceeds to step T12.

At steps T9 and T10, the projectors 2L to 2R input the screen-shaped detection signal SFT output at step T3 described above at the same timing as step T4 described above. The projectors 2L to 2R move by calculating the position of the projector from the XY position information of the poles 7L and 7R of the input detection signal SFT, and change the projection direction. For example, as shown in FIG. 5, the projector 2L is the size of the left screen 10L and size r _1, the minimum distance the minimum projector projection distance to illuminate the left screen 10L of this size r ₁ "d ( r ₁ ) min ”, the position (x1, y1) of the projector 2L is calculated by the above formulas (1) and (2). Further, the focus is obtained and the process proceeds to step T11.

  In step T11, the projectors 2L to 2R move by driving the electric XY stage based on the calculation result, and adjust the projection direction. In addition, the projectors 2L to 2R adjust the focus and proceed to step T12.

  In step T12, the projectors 2L to 2R display the video information SDL, SDC, and SDR on the screen 10. For example, the projector 2L displays the video information SDL on the left screen 10L, the projector 2C displays the video information SDC on the central screen 10C, and the projector 2R displays the video information SDR on the right screen 10R, and goes to Step T13. Transition.

  In step T13, the video processing device 50 determines whether or not the video signal SDin has ended. If the video signal SDin has not ended, the process returns to step T1 to input the video signal SDin again. When the video signal SDin ends, the video processing ends.

  As described above, according to the video processing apparatus 50 as the second embodiment of the present invention, the video signal SDin is processed and the video is displayed on the screen 10, and the operation signal SOP from the operation unit 51 is displayed. Based on this, a plurality of projection areas having different angles are formed on the screen 10, video information is extracted from the video signal SDin and divided into three pieces of video information SDL, SDC, and SDR, and the video information is assigned to each of the projection areas of the screen 10. Irradiation. In this example, after the projection areas having different angles are formed on the screen 10, the video information is divided based on the area division information SP 'determined based on the detection signal SFT having the screen shape.

  As a result, a screen 10 having a desired shape can be formed, and an image can be projected on the three-dimensionally formed screen 10. Accordingly, it is possible to realize a realistic video image.

  13A and 13B are explanatory diagrams illustrating a configuration example of a screen device 300 as a third embodiment according to the present invention. A screen device 300 shown in FIG. 13A includes a screen 10, screen telescopic columns 4 </ b> L and 4 </ b> R, and a screen region forming mechanism 500. In addition, the same code | symbol is attached | subjected to the same component as the screen apparatus 3 of 1st Example, and the detailed description is abbreviate | omitted.

  FIG. 13B is a partially fragmented top view illustrating a configuration example of the screen region forming mechanism 500. The screen area forming mechanism 500 shown in FIG. 13B extrudes and divides predetermined portions of the screen 10 that are expanded and contracted by the screen extendable columns 4L and 4R, and automatically forms a plurality of projection areas with different angles on the screen 10.

  In this example, the screen region forming mechanism 500 includes four ball screw mechanisms 60L, 60R, 60F, 60B, poles 7L, 7R, and a screen driving unit (not shown). The screen drive unit drives four ball screw mechanisms. For example, the screen drive unit includes four motors that drive four ball screw mechanisms 60L, 60R, 60F, and 60B, and rotates the motors to drive the corresponding ball screw mechanisms.

  The front and rear ball screw mechanisms 60 </ b> F and 60 </ b> B are fixed on the installation base of the screen device 300. The left and right ball screw mechanisms 60L and 60R are engaged with the ball screw mechanisms 60F and 60B fixed on the installation base so as to be movable left and right. In this example, the left and right ball screw mechanisms 60L and 60R have screwed portions 60c, and the screwed portions 60c are screwed onto the ball screw shafts 60b of the ball screw mechanisms 60F and 60B. Thereby, by rotating the ball screw shaft 60b of the front and rear ball screw mechanisms 60F and 60B, the left and right ball screw mechanisms 60L and 60R move to the left and right. The interval between the ball screw mechanism 60L and the ball screw mechanism 60R is constant.

  Nuts 6c to which poles 7L and 7R are attached are screwed onto the ball screw shafts 60b of the left and right ball screw mechanisms 60L and 60R. Thereby, the poles 7L and 7R move back and forth by rotating the ball screw shafts 60b of the left and right ball screw mechanisms 60L and 60R. Therefore, the screen 10 can be pushed out and separated by these poles 7L and 7R, and projection areas having different angles can be automatically formed on the screen 10.

  FIG. 14 is a cross-sectional view showing a configuration example of the screen region forming mechanism 500. The screen region forming mechanism 500 shown in FIG. 14 is a cross-sectional view taken along the line XX in FIG. 13B. The shape of the nut 6c screwed into the ball screw shaft 60b of the ball screw mechanism 60L shown in FIG. 14 is a T shape. The flange 6h of the T-shaped nut 6c is guided by the groove 6g of the rail 60a. Thus, the nut 6c guided by the groove 6g of the rail 60a advances on the rail 60a while maintaining the posture when the ball screw shaft 60b rotates. Therefore, the pole 7L vertically attached to the upper surface of the nut 6c moves on the rail 6a while maintaining a substantially vertical state. A bifurcated screw portion 60c of the ball screw mechanism 60L is screwed to the ball screw shaft 60b of the ball screw mechanism 60F.

  As described above, according to the screen apparatus 300 as the third embodiment of the present invention, the screen area forming mechanism 500 including the four ball screw mechanisms 60L, 60R, 60F, and 60B is provided, and each ball screw mechanism is provided. Driven to move the poles 7L and 7R on the ball screw mechanisms 60L and 60R.

  Accordingly, the screen 10 can be pushed out and separated by the poles 7L and 7R, and projection areas having different angles can be automatically formed on the screen 10.

  In addition, although the example of the rear projection format was shown, you may apply not only to this but to a front projection (front projection) format.

  Further, when the rear projection system 100 of the first embodiment is not used, it is possible to improve the appearance when the system is not used by keeping the shape of the screen 10 in the state of the flat screen shown in FIG. 4A.

  Moreover, although the example which divides the screen 10 into 3 was demonstrated, it is not restricted to this, It is also possible to divide | segment into 2 divisions or 4 divisions or more.

  It is suitable for application to a projector system that projects broadcast and packaged media images on a screen.

1 is a perspective view showing a configuration example of a rear projection system 100 as a first embodiment according to the present invention. FIG. 6 is a perspective view illustrating a configuration example of a main part of a screen region forming mechanism 5. It is sectional drawing which shows the structural example of 6L of ball screw mechanisms. (A)-(D) is explanatory drawing which shows the example of irradiation to the screen 10 by projector 2L, 2C, 2R. It is explanatory drawing which shows the example of control of the position of projector 2L, 2C, 2R. 3 is a block diagram illustrating a configuration example of a control system of the video processing device 1. FIG. (A) And (B) is explanatory drawing which shows the example of a moving image process of the video composition analysis part 22. FIG. (A)-(D) is explanatory drawing which shows the example of a still image process of the video composition analysis part 22. FIG. (A) And (B) is explanatory drawing which shows the video processing example of the moving image of the video composition analysis part 22, or a still image. 3 is a flowchart illustrating an operation example of the rear projection system 100. It is a block diagram which shows the structural example of the control system of the video processing apparatus 50 as 2nd Example which concerns on this invention. 5 is a flowchart illustrating an operation example of the rear projection system 200. (A) And (B) is explanatory drawing which shows the structural example of the screen apparatus 300 as a 3rd Example which concerns on this invention. 5 is a cross-sectional view showing a configuration example of a screen region forming mechanism 500. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,50 ... Video processing apparatus, 2L, 2C, 2R ... Projector, 3,300 ... Screen apparatus, 4L, 4R ... Screen telescopic column, 5,500 ... Screen area formation mechanism, 6L, 6R ... Ball screw mechanism, 6a ... Rail, 6b ... Ball screw shaft, 7L, 7R ... Paul, 8L, 8R ... Screen drive unit, 20 ... Video information dividing unit , 21 ... Video geometric conversion unit, 22 ... Video composition analysis unit, 23 ... Screen shape control unit, 51 ... Operation unit, 52 ... Screen shape detection unit, 100 ... Rear projection system

Claims (12)

A system that processes video signals and displays them on a screen,
A screen expansion / contraction means that winds up the screen or draws out the screen to expand and contract the screen;
Projection area forming means for automatically forming a plurality of projection areas with different angles on the screen stretched by the screen stretching means;
A video processing device that inputs the video signal, extracts video information from the video signal, and divides the video information;
A video processing system comprising: a plurality of projectors that input video information divided by the video processing device and irradiate the divided video information to each of the projection areas of the screen. The plurality of projectors are:
The video processing system according to claim 1, wherein the video processing system is installed behind the screen and irradiates video to each of the projection areas of the screen. The projection area forming means includes:
An area partition member for partitioning the screen and providing projection areas with different angles;
A moving mechanism for moving the area partition member;
A drive unit for driving the moving mechanism;
The video processing system according to claim 1, wherein a predetermined portion of the screen is pushed out and divided by the region partitioning member, and a plurality of projection regions having different angles are automatically formed on the screen. The video processing device includes:
A video composition analysis unit for analyzing the composition of the video based on a motion vector of the video information;
The video processing system according to claim 1, further comprising: a video information dividing unit that divides the video information based on a result analyzed by the video composition analyzing unit. The video composition analysis unit
Extracting the component lines of the main composition by performing edge detection and long line segment detection of the video information,
The video processing system according to claim 4, wherein the composition of the video is analyzed based on a component line of the video information. The video composition analysis unit
The video signal includes corner information indicating a video boundary,
The video processing system according to claim 4, wherein the composition of the video is analyzed based on the corner information. The projection area forming means includes:
The video processing system according to claim 4, wherein a plurality of projection areas having different angles are automatically formed on the screen based on a result analyzed by the video composition analysis unit. The projector is
The video processing system according to claim 4, wherein the position of the projector is moved based on a result analyzed by the video composition analysis unit. The video processing device includes:
The video processing system according to claim 1, further comprising video geometric conversion means for geometrically converting the divided video information. An operation unit for operating the projection area forming means;
A detection unit for detecting the shape of the screen formed by the projection region forming means operated by the operation unit,
The video processing device includes:
The video processing system according to claim 1, wherein the video information is divided based on a detection signal from the detection unit. A screen that displays the image to be illuminated,
A screen expansion / contraction means that winds up the screen or draws out the screen to expand and contract the screen;
A screen device comprising: projection area forming means for extruding and separating predetermined portions of the screen expanded and contracted by the screen expansion / contraction means and automatically forming a plurality of projection areas with different angles on the screen. The projection area forming means includes:
An area partition member for partitioning the screen and providing projection areas with different angles;
A moving mechanism for moving the area partition member;
A drive unit for driving the moving mechanism;
The screen device according to claim 11 , wherein a predetermined portion of the screen is pushed out and divided by the region partition member, and a plurality of projection regions having different angles are automatically formed on the screen.

Images