JP4770197B2 - Presentation control apparatus and program - Google Patents

Description

  The present invention relates to a presentation control apparatus for supporting a presentation performed using, for example, a projection image by a projector.

  When a presentation is performed using a document image created by a personal computer, presentation image data created and recorded by the personal computer is converted into an optical image by a projector and projected onto a screen.

  When such a presentation is actually performed, a laser pointer using a visible light laser is used to indicate an arbitrary position on the screen on which the presentation image is projected.

  Conventionally, a projected image on the screen specified by the laser beam from the laser pointer is captured by a camera, the movement state of the laser pointer on the projected image captured by this camera is detected, and a presentation image output source as mouse operation data An apparatus for transmitting to a personal computer is considered (for example, see Patent Document 1).

  In addition, there has been considered an apparatus that captures a projected image on a screen with a camera built in a projector and transmits commands such as page-forward and page-return of a presentation image to a personal computer (for example, see Patent Document 2).

Further, a camera that captures the projected image on the screen is connected to the personal computer that is the output source of the presentation image, the position indicated by the laser pointer is detected by analyzing the captured image on the personal computer, and the presentation image is displayed according to the pointer position. An apparatus that processes and outputs the signal is also considered (for example, see Patent Document 3).
JP-A-10-091344 JP-A-10-326151 JP 07-129322 A

  In the conventional devices that support the presentation, any of the devices captures a projected image projected on a clean screen by a projector, and detects a designated position by a laser pointer based on the captured projection image. Although it is possible to do this, in this case, it is necessary to match the shooting range by the camera well with the range of the projection image projected on the screen so that the coordinate area of the projection image matches the coordinate area of the shot image, There is a problem that the installation position and angle of view of the camera are very severe and troublesome.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a presentation control apparatus that enables suitable presentation .

The presentation control apparatus according to claim 1 of the present invention includes a camera that captures an image projected by a projector and a light spot by a pointer on the projected image, and is output to the projector and image data to be projected. A specific image projection control unit that outputs and projects image data of a specific color to the projector, and the specific image projection control unit projects the image data of the specific color by the projector. An edge detection unit that detects an edge of the image of the specific color with respect to a background image in the image captured by the camera, and a projection range included in the captured image based on the edge detected by the edge detection unit Projection range position acquisition means for acquiring the coordinate information of the position corresponding to, and the projection range position Based on the coordinate information of the position of the acquired projector projection range by resulting unit, and a pointer pointing coordinate acquisition means for acquiring a point of coordinates by the pointer on the image within the projection range, the pointer pointing coordinate acquisition means Pointer emphasis display control means for synthesizing an image that reduces the image brightness of a certain small area around the light spot by the pointer in a certain proportion corresponding to the coordinates of the light spot by the pointer in the acquired projector projection range. It is characterized by that.

The presentation control device according to claim 2 of the present invention is the presentation control device according to claim 1, wherein the specific image projection control means is configured to perform an initial process before projecting the presentation image onto the screen by the projector. The image data of the specific color is output to a projector and projected as a dedicated image for setting.
The presentation control apparatus according to claim 3 of the present invention is the presentation control apparatus according to claim 1 or 2, wherein the specific image projection control means is image data in which the entire area is black. Is output to a projector and projected.
A presentation control device according to a fourth aspect of the present invention is the presentation control device according to any one of the first to third aspects, wherein the projection range acquired by the projection range position acquisition means is the same. The image processing apparatus further includes correction means for correcting distortion.
The presentation control device according to claim 5 of the present invention is the presentation control device according to any one of claims 1 to 4 , wherein the pointer instruction coordinate acquisition means acquires the projection range position. Pixel data having a luminance equal to or higher than a threshold value is detected from each pixel data of the image within the projection range based on the coordinate information of the position of the projector projection range acquired by the means, and the coordinates of the position of the detected pixel are Acquired as coordinates of a light spot by a pointer.

A presentation control apparatus according to a sixth aspect of the present invention is the presentation control apparatus according to any one of the first to fifth aspects, wherein the projector projection range is acquired by the pointer instruction coordinate acquisition means. Command determining means for determining a control command by detecting a modulation pattern of a pixel of the photographed image corresponding to the coordinates of the light spot by the pointer, and the projector according to the control command determined by the command determining means And a projection image control means for controlling image data to be output and projected.
The invention according to claim 7 of the present invention includes a camera that captures an image projected by a projector and a light spot by a pointer on the projected image, and controls image data to be output to the projector and projected. A program for a presentation control device that outputs a specific color image data to a projector and projects the specific color image data, and the specific image projection control function projects the specific color image data by the projector. An edge detection function for detecting an edge of the image of the specific color with respect to a background image in a photographed image by the camera, and a projection range included in the photographed image based on the edge detected by the edge detection function Projection range position acquisition function that acquires coordinate information of the position corresponding to, and this projection range position acquisition function Based on the coordinate information of the position of the acquired projector projection range Ri, and a pointer indicated coordinate obtaining function for obtaining a light spot of coordinates by the pointer on the image within the projection range, obtained by this pointer pointing coordinate acquisition function And a pointer emphasis display control function for compositing an image that reduces the image brightness of a certain small area around the light spot by the pointer by a certain ratio in correspondence with the coordinates of the light spot by the pointer in the projector projection range. It is characterized by.

According to the presentation control apparatus of the present invention, the preferred presentation is possible.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing an external configuration of a presentation system incorporating a presentation control apparatus 10 according to an embodiment of the present invention.

  FIG. 2 is a diagram showing a connection configuration of a presentation system in which the presentation control apparatus 10 is incorporated.

  The presentation control device 10 converts the presentation image data output from the personal computer (PC) 11 serving as the output source of the presentation image data into the optical image G on the screen 12. The presentation control device 10 is connected to a projector 13 for projecting, and includes a CCD camera unit 15 for photographing an image (G) projected as a projection range 14 on the screen 12. .

  In the presentation control device 10, the projection image (G) on the screen 12 photographed by the camera unit 15 is displayed on the monitor by the monitor unit 16.

  Here, the imaging range 17 of the projection image G on the screen 13 by the camera unit 15 may be a range in which the projection range 14 of the projection image is sufficiently contained, and the imaging range 17 is not necessarily matched with the projection range 14. Therefore, the setting operation of the shooting direction by the camera unit 15 can be easily performed.

  On the screen 12 on which the presentation image G is projected and displayed, an arbitrary position is indicated by the laser pointer 18 along with the presentation, and the designated position P of the laser pointer 18 on the image G by the visible light laser is the camera unit. 15 is captured in accordance with the projection image G taken by the camera 15 and displayed on the monitor 16 in the same manner.

  In addition, a transparent touch panel unit 19 is provided on the monitor screen of the monitor unit 16, and an instruction position corresponding to a user's touch operation on the monitor screen is detected as a coordinate position.

  In addition, the presentation control apparatus 10 includes a user I / F unit 20 using a key / button for switching the power ON / OFF setting and the operation mode between the initial setting mode and the presentation control mode.

  That is, in such a presentation control apparatus 10, the projection image G on the screen 12 captured by the camera unit 15 is displayed on the monitor unit 16 in the setting state of the initial setting mode. Then, on the display screen of the projection image G displayed on the monitor unit 16, for example, as shown in FIG. 1, the four corners of the projection image G within the imaging range 17 by the camera unit 15, that is, the projection range. When the four corner points a, b, c, and d are instructed by the user, the coordinates of four corners a (x1, y1), b (x2, y2), c on the projection range (image G) 14 are displayed. (x3, y3) and d (x4, y4) are respectively detected by the touch panel unit 19, and based on this, the coordinate values in the XY directions in the entire area on the projection range (image G) 14, that is, the personal computer (PC The coordinate values (X, Y) relating to the presentation image area output from 11 and projected on the screen 12 by the projector 13 are managed.

  FIG. 3 is a block diagram showing a configuration of an electronic circuit of the presentation control apparatus 10.

  The electronic circuit of the presentation control apparatus 10 is controlled by a main controller (CPU) 21 so that the operation of each part of the circuit is controlled. The control program is stored in advance in the ROM in the memory unit 22. As a control program stored in advance in the ROM in the memory unit 22, a main processing program that controls the entire operation of the presentation control apparatus 10 is used as a main body, an initial setting mode processing program, a presentation control mode program, and the presentation control mode. A pointer instruction position detection processing program that is a subroutine of the program is stored.

  The main controller (CPU) 21 is connected to the personal computer (PC) 11 in addition to the memory unit 22, the camera unit 15, the monitor unit 16, the touch panel unit 19, and the user I / F unit 20. PC-I / F unit 23 for performing input / output control at the projector, projector I / F unit 24 for performing input / output control with the projector 13, DVD, CD, FD, memory card, etc. A media I / F unit 25 for performing input / output control with an external recording medium is connected.

  FIG. 4 is a diagram showing the configuration of various data memories provided in the RAM in the memory unit 22 of the presentation control apparatus 10.

The RAM in the memory unit 22 includes a presentation image memory 22a, a projection state captured image memory 22b, a projection range indication position memory 22c, a projection monitor display correction parameter memory 22d, a projection monitor display correction image memory 22e, a pointer detection coordinate memory 22f, analysis command memory 22 g, such as a pointer highlighted combined image memory 22 h, working memory in which various data is temporarily stored is provided.

  The presentation image memory 22a stores presentation image data (G) to be transferred from the personal computer (PC) 11 and output to the projector 13.

  Projection image data on the screen 12 photographed by the camera unit 15 is stored in the projection state photographed image memory 22b.

  The projection range instruction position memory 22c is used for user instruction operations for the four points a, b, c, and d corresponding to the projection range 14 in the display state of the projection image G on the monitor unit 16 in the initial setting mode. Accordingly, each coordinate data a (x1, y1), b (x2, y2), c (x3, y3), d (x4, y4) detected by the touch panel 19 is stored.

  In the projection monitor display correction parameter memory 22d, the projection image G photographed and displayed on the monitor unit 16 is displayed as a trapezoidal image in accordance with the installation position of the camera unit 15 with respect to the screen 12 and the photographing field angle. When distortion occurs, the four-point coordinates a (x1, y1), b (x2, y2), c (x3, y3), d () corresponding to the projection range 14 stored in the projection range indication position memory 22c. A distortion correction parameter for projection monitor display is calculated and stored in accordance with the image distortion amount calculated based on x4, y4).

  The projection monitor display corrected image memory 22e stores the projection image G after distortion correction according to the distortion correction parameter for projection monitor display stored in the projection monitor display correction parameter memory 22d.

  The pointer detection coordinate memory 22f has four-point coordinates a (x1, y1), b (x2, y2), c (x3, y3), d corresponding to the projection range 14 stored in the projection range instruction position memory 22c. The designated position coordinates P (X, Y) by the laser pointer 18 calculated based on the XY coordinates of the area surrounded by (x4, y4) is stored.

  In the analysis command memory 22g, the modulation pattern of the indication light by the laser pointer 18 with respect to the projection image G on the screen 12 is reflected in the projection image data that is updated and stored while being captured in the projection state captured image memory 22b. Analysis is performed by detecting the incident pattern, and a command code (such as a page feed / page return command of a presentation image) corresponding to the instruction light modulation pattern is stored.

The pointer emphasizing composite image memory 22 h lowers the image brightness of the small area around the position P indicated by the laser pointer 18 in the presentation image (22 a) projected on the screen 12 by the projector 13. Thus, mask image data M (see FIG. 10) for emphasizing and displaying the position P indicated by the laser pointer 18 is stored.

  Next, the operation of the presentation system incorporating the presentation control apparatus 10 having the above configuration will be described.

  In this presentation system, first, based on a presentation image (captured image) G photographed by the camera unit 15 of the presentation control apparatus 10 and displayed on the monitor unit 16, the four-point coordinates a (x1, x1) of the projection range 14 thereof. Initial setting processing is performed to obtain y1), b (x2, y2), c (x3, y3), and d (x4, y4), and to obtain distortion correction parameters for projection monitor display.

  FIG. 5 is a flowchart showing the initial setting process of the first embodiment by the presentation control apparatus 10.

  This initial setting process is performed, for example, in a state where an initial presentation image G or a test image thereof is output by the personal computer (PC) 11 and projected and displayed on the screen 12 by the projector 13.

  In the presentation control device 10, when the initial setting process is started, the projection image G on the screen 12 captured by the camera unit 15 is captured and displayed on the monitor 16 (step A1).

  Here, with respect to the projection image G displayed on the monitor by the monitor unit 16, as shown in FIG. 1, for example, the arrows j, As indicated by k, when an instruction is given by a touch operation, the coordinates of each of the four designated positions of the projection range 14 on the monitor display are detected by the touch panel 19, and a (x1, y1), b (x2, y2), c (x3, y3) and d (x4, y4) are stored in the projection range indicating position memory 22c in the memory unit 22 (step A2).

  Then, when a shooting distortion occurs such that the projected image G photographed and displayed on the monitor unit 16 is displayed as a trapezoidal image, it corresponds to the projection range 14 stored in the projection range instruction position memory 22c. Distortion correction parameters for projection monitor display according to the image distortion amount calculated based on the four-point coordinates a (x1, y1), b (x2, y2), c (x3, y3), d (x4, y4) Is calculated and stored in the projection monitor display correction parameter memory 22d (step A3).

  FIG. 6 is a flowchart showing a presentation control process by the presentation control apparatus 10.

  FIG. 7 is a flowchart showing a pointer indication position detection process accompanying the presentation control process by the presentation control apparatus 10.

  When this presentation control process is activated, presentation image data G transferred from the personal computer (PC) 11 and written in the presentation image memory 22a in the memory 22 is output to the projector 13, converted into an optical image, and converted to the screen 12. Are projected and displayed (step B1).

  FIG. 8 is a diagram showing a presentation image G that is photographed by the camera unit 15 of the presentation control apparatus 10 and stored in the projection state photographed image memory 22 b and displayed on the monitor unit 16.

  Four coordinates a (x1, y1), b (x2, y2), c (x3, y3), d (x4, d4) of the projection range 14 in the presentation image G captured by the camera unit 15 and displayed on the monitor y4) is detected in accordance with the user instruction operation on the monitor display screen in step A2 in the initial setting process, and is stored in the projection range instruction position memory 22c.

  After the projection display process of the presentation image G by the projector 13 in step B1, when the process proceeds to the pointer indication position detection process (step BS) in FIG. 7, the presentation image G projected and displayed on the screen 12 is the camera unit. 15 is stored in the projected state captured image memory 22b and displayed on the monitor 15 (step S1).

  Then, the presentation image G photographed by the camera unit 15 and displayed on the monitor is distorted such that the monitor image is displayed in a trapezoidal shape according to the installation position and angle of view setting of the camera unit 15. In this case, distortion correction parameters for projection monitor display, which are calculated in advance with the initial setting process and stored in the projection monitor display correction parameter memory 22d, are read out, and the captured image distortion in the monitor is corrected and projected. It is stored in the monitor display corrected image memory 22 and displayed on the monitor unit 16 (step S2).

  Thereby, the projected image (presentation image G) on the screen 12 displayed on the monitor by the monitor unit 16 is displayed on the monitor without distortion regardless of the installation position of the camera unit 15 and the angle of view setting.

  On the other hand, four-point coordinates a (x1, y1) defining the projection range 14 stored in the projection range instruction position memory 22c for the projection image captured by the camera unit 15 and stored in the projection state captured image memory 22b. According to b (x2, y2), c (x3, y3), and d (x4, y4), pixel positions having pixel data exceeding a predetermined threshold are selected from the pixel data of the image data in the projection range 14. The projection determined by the four-point coordinates a (x1, y1), b (x2, y2), c (x3, y3), and d (x4, y4) of the retrieved pixel position is retrieved (step S3). The XY coordinate value within the range 14 is calculated as the indicated position P (X, Y) by the laser pointer 18 and stored in the pointer detection coordinate value memory 22f (step S4).

  Thus, the four-point coordinates a (x1, y1), b (x2) according to the user designation can be obtained without matching the shooting range 17 by the camera unit 15 with the projection range 14 of the presentation image G projected on the screen 12. , y2), c (x3, y3), and d (x4, y4), the designated position coordinates P (X, Y) by the laser pointer 18 within the projection range 14 can be accurately detected.

  Thus, when the designated position coordinate P (X, Y) by the laser pointer 18 within the projection range 14 of the presentation image G on the screen 12 is detected, the laser by the laser pointer 18 is changed according to the change in the pixel data of the designated position coordinate P. A light modulation pattern is detected (step S5).

  FIG. 9 is a diagram showing the contents of commands corresponding to each modulation pattern of the laser beam by the laser pointer 18 that can be detected from the projected image on the screen 12 photographed by the camera in accordance with the presentation control process in the presentation control apparatus 10. .

  That is, according to the change of “1” and “0” of the pixel data corresponding to the designated position coordinate P (X, Y) by the laser pointer 18 in the captured projection image range (14) detected in the steps S3 and S4. The modulation pattern of the laser beam is detected (step S5), and the presence / absence of a command to the presentation control by the laser pointer 18 according to the presence / absence of the comparison match with the modulation pattern for each command as shown in FIG. The contents are determined (step S6).

  Here, when it is determined that there is a page feed command or a page return command in response to an instruction operation by the laser pointer 18 on the projected image (14) on the screen 12, the page control command is sent to the personal computer (PC). 11 and page feed control and page return control of the presentation image currently being projected and displayed are performed (steps S6 → S7).

  Thereby, not only the designated position coordinates P (X, Y) by the laser pointer 18 with respect to the presentation image G (22a) projected on the screen 12 by the projector 13 can be easily detected, but also the laser light output by the laser pointer 18 The control command according to the modulation pattern can be detected, and the page feed control and page return control of the presentation image G (22a) can be easily instructed to the personal computer (PC) 11 which is the output source of the image G. Can be done.

  In the command determination process by detecting the modulation pattern of the laser beam by the laser pointer 18, the designated position coordinate P (X, Y) by the laser pointer 18 is the projection range 14 (or shooting range 17) of the presentation image G. If it is out of the range, the command determination process by detecting the modulation pattern of the laser beam is reset at that time.

  On the other hand, when it is determined that there is no command in accordance with an instruction operation by the laser pointer 18 for the projection image (14) on the screen 12, the designated position coordinates within the photographic projection image range (14) by the laser pointer 18 are determined. An image (pointer emphasizing composite image 22h) for emphasizing the point of the designated position coordinate P in correspondence with P (X, Y) is synthesized (step S8).

  FIG. 10 is a diagram showing a composite processing state of the pointer emphasizing composite image (22h) corresponding to the laser pointer instruction position P with respect to the presentation image (projected image 22a) in the presentation control apparatus 10.

  That is, the pointer emphasizing composite image (22h) is mask image data M for reducing the image brightness of a certain small area of the presentation image (22a) at a certain rate, and as shown in FIG. As shown in FIG. 10A, the presentation image (22a) being projected and displayed by 13 is associated with the detected position coordinate P (X, Y) by the laser pointer 18 as shown in FIG. The mask image data M as shown in FIG. 10C is synthesized as a composite image 22ah as shown in FIG. 10D, and is output to the projector 13 and projected onto the screen 12 as shown in FIG. Thus, the point of the designated position coordinate P by the laser pointer 18 in the image projection range 14 is highlighted.

  Therefore, according to the presentation system incorporating the presentation control apparatus 10 having the above-described configuration, the presentation image G transferred from the personal computer (PC) 11 is stored and output to the projector 13 and projected onto the screen 12. The projected image (14) on the screen 12 is photographed by the camera unit 15 and displayed on the monitor unit 16 having the touch panel 19 as well as the four corners of the projection range 14 of the presentation image G displayed on the monitor [a ( x1, y1), b (x2, y2), c (x3, y3), and d (x4, y4)] are touch-designated by the user to obtain a coordinate area corresponding to the image projection range 14. Then, the four-point coordinates [a (x1, y1), b (x2, y2), c (x3, y3), d (x4, y4)] in the projection state photographed image (22b) of the presentation image G are determined. For each pixel data within the projected range 14, a position where pixel data having a luminance exceeding a predetermined threshold is detected as the designated position coordinates P (X, Y) by the laser pointer 18, and a pointer instruction on the presentation image G is detected. Since the position P is clarified and the pointer indication position P is highlighted and the like is appropriately performed, the shooting range 17 by the camera unit 15 needs to be closely matched to the projection range 14 of the presentation image G projected by the projector 13. In addition, it is possible to correctly analyze the pointing operation by the laser pointer 18 on the projection image.

  Further, not only the indication position coordinates P (X, Y) by the laser pointer 18 with respect to the presentation image G (22a) projected on the screen 12 can be easily detected, but also the modulation pattern of the laser light output by the laser pointer 18 The control command can be also detected, and the page feed control and page return control of the presentation image G (22a) can be easily instructed to the personal computer (PC) 11 that is the output source of the image G. .

  In the presentation control device of the first embodiment, a coordinate area corresponding to the projection range 14 is projected from the projected image (G) on the screen 12 that is photographed by the camera unit 15 and displayed on the monitor unit 16. For obtaining, the projection range 14 of the projection image (G) on the captured image displayed on the monitor is instructed by the user, so that the projection range is based on the detection signal from the touch panel 19 provided on the monitor screen. 14, the coordinate information corresponding to 14 is acquired. However, as will be described in the second embodiment, an initial setting-dedicated image 14 </ b> G having the same image size as the presentation image G and having the entire area black is used as the projector 13. From the image data projected onto the screen 12 by the camera unit 15 and the projection state taken by the camera unit 15 and displayed on the monitor May obtain the coordinate range corresponding to the black image 14G through the edge detection processing of the black-and-white image as coordinate information of the projection area 14.

(Second Embodiment)
FIG. 11 is a flowchart showing an initial setting process of the second embodiment by the presentation control apparatus 10.

  FIG. 12 is a diagram showing a projection state photographed image obtained by photographing the dedicated image 14G projected on the screen 12 by the camera unit 15 in accordance with the initial setting process of the second embodiment of the presentation control apparatus 10.

  That is, in the initial setting process of the second embodiment, before the presentation image G transferred from the personal computer (PC) 11 is projected onto the screen 12 by the projector 13, first, it has the same image size as the presentation image G. Then, the image 14G dedicated to the initial setting in which the entire area is black is projected and displayed on the screen 12 (step 21).

  Then, the projection state of the black image 14G dedicated to the initial setting projected on the screen 12 is photographed and captured by the camera unit 15 and displayed on the monitor by the monitor unit 16 (step A22).

  Here, for example, as shown in FIG. 12, in the photographed image (imaging range 17) in a state where the black image 14 </ b> G displayed on the monitor 16 is projected, in the white pixel region (imaging range 17). The edge detection processing of the black pixel region (projection range 14) is performed, and the four coordinates a (x1, y1), b (x2, y2) of the projection range 14 corresponding to the black image 14G subjected to the edge detection processing are performed. ), C (x3, y3), d (x4, y4) are acquired and stored in the projection range indicating position memory 22c in the memory unit 22 (step A23).

  Then, as in the first embodiment, the projection range instruction position memory 22c is displayed when shooting distortion occurs such that the black projection image 14G shot and displayed on the monitor unit 16 is displayed as a trapezoidal image. According to the image distortion amount calculated based on the four-point coordinates a (x1, y1), b (x2, y2), c (x3, y3), and d (x4, y4) corresponding to the projection range 14 stored in FIG. Thus, distortion correction parameters for projection monitor display are calculated and stored in the projection monitor display correction parameter memory 22d (step A24).

  Therefore, according to the initial setting process of the second embodiment by the presentation control device 10, the user designates the projection range 14 of the presentation image G on the screen 12 that is photographed by the camera unit 15 and displayed on the monitor unit 15. Without the operation to operate, the initial setting-dedicated image 14G having the same image size as the presentation image G and the entire region black is projected and displayed on the screen 12, and this is captured and captured by the camera unit 15, Coordinate information of the image projection range 14 can be easily obtained.

  Note that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention at the stage of implementation. Further, each of the embodiments includes inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in each embodiment or some constituent features are combined, the problems described in the column of the problem to be solved by the invention can be solved. When the effects described in the column of the effect of the invention can be obtained, a configuration in which these constituent elements are deleted or combined can be extracted as an invention.

The figure which shows the external appearance structure of the presentation system incorporating the presentation control apparatus 10 which concerns on embodiment of this invention. 2 is a diagram showing a connection configuration of a presentation system in which the presentation control apparatus 10 is incorporated. FIG. FIG. 2 is a block diagram showing a configuration of an electronic circuit of the presentation control apparatus 10. FIG. 3 is a diagram illustrating a configuration of various data memories provided in a RAM in a memory unit 22 of the presentation control apparatus 10. 3 is a flowchart showing an initial setting process of the first embodiment by the presentation control apparatus 10; 7 is a flowchart showing a presentation control process by the presentation control apparatus 10. 7 is a flowchart showing pointer indication position detection processing accompanying presentation control processing by the presentation control apparatus 10; The figure which shows the presentation image G which is image | photographed by the camera part 15 of the said presentation control apparatus 10, is memorize | stored in the projection state picked-up image memory 22b, and is displayed on the monitor part 16. FIG. FIG. 6 is a view showing the contents of commands corresponding to each modulation pattern of laser light by a laser pointer 18 that can be detected from a projected image on a screen 12 photographed by a camera in accordance with presentation control processing in the presentation control apparatus 10. The figure which shows the synthetic | combination processing state of the synthetic | combination image for pointer emphasis (22h) matched with the laser pointer instruction | indication position P with respect to the presentation image (projection image) 22a in the said presentation control apparatus. 6 is a flowchart showing an initial setting process of the second embodiment by the presentation control apparatus 10; The figure which shows the projection state picked-up image which image | photographed the exclusive image 14G projected on the screen 12 with the initial setting process of 2nd Embodiment of the said presentation control apparatus 10 with the camera part 15. FIG.

Explanation of symbols

10: Presentation control device 11: Personal computer (PC)
DESCRIPTION OF SYMBOLS 12 ... Screen 13 ... Projector 14 ... Projection range 14G ... Black image only for initial setting 15 ... Camera part 16 ... Monitor part 17 ... Imaging (photographing) range 18 ... Laser pointer 19 ... Touch panel 20 ... User I / F part 21 ... Main Controller (CPU)
22 ... Memory unit 22a ... Presentation image memory 22b ... Projection state captured image memory 22c ... Projection range indication position memory 22d ... Projection monitor display correction parameter memory 22e ... Projection monitor display correction image memory 22f ... Pointer detection coordinate memory 22g ... Analysis command memory 22h ... pointer emphasis composite image memory 23 ... PC I / F unit 24 ... projector I / F unit 25 ... media I / F unit P ... laser pointer instruction position M ... mask image data

Claims (7)

A presentation control device having a camera for photographing an image projected by a projector and a light spot by a pointer on the projected image, and controlling image data to be output to the projector and projected.
Specific image projection control means for outputting and projecting image data of a specific color to the projector;
Edge detection means for detecting an edge of the image of the specific color with respect to a background image in a photographed image by the camera in a state where image data of a specific color is projected by the projector by the specific image projection control means;
A projection range position acquisition unit that acquires coordinate information of a position corresponding to the projection range included in the captured image based on the edge detected by the edge detection unit;
Based on the coordinate information of the position of the projector projection range acquired by the projection range position acquisition means, pointer indication coordinate acquisition means for acquiring the coordinates of the light spot by the pointer on the image within the projection range;
Pointer emphasis that synthesizes an image that reduces the image brightness of a certain small area around the light spot by the pointer in correspondence with the coordinates of the light spot by the pointer in the projector projection range acquired by the pointer instruction coordinate acquisition means Display control means ;
A presentation control device comprising: The specific image projection control means outputs the specific color image data to the projector and projects it as an image for initial setting before projecting the presentation image onto the screen by the projector.
The presentation control apparatus according to claim 1. The specific image projection control means outputs the image data in the entire area black to the projector and projects it.
The presentation control apparatus according to claim 1, wherein the presentation control apparatus is configured as described above.   4. The presentation control apparatus according to claim 1, further comprising a correction unit that corrects distortion of the projection range acquired by the projection range position acquisition unit. The pointer instruction coordinate acquisition means includes
Based on the coordinate information of the position of the projector projection range acquired by the projection range position acquisition means, pixel data having a luminance equal to or higher than a threshold is detected from each pixel data of the image in the projection range, and the detected pixel is detected. Obtaining the coordinates of the position as the coordinates of the light spot by the pointer;
The presentation control apparatus according to any one of claims 1 to 4, wherein the presentation control apparatus is characterized in that: Command determination means for detecting a modulation pattern of pixels of the captured image corresponding to the coordinates of the light spot by the pointer in the projector projection range acquired by the pointer instruction coordinate acquisition means, and determining a control command;
Projection image control means for controlling image data to be output and projected to the projector according to the control command determined by the command determination means;
Presentation control apparatus according to any one of claims 1 to 5 and further comprising a. A computer of a presentation control apparatus that has a camera that captures an image projected by a projector and a light spot by a pointer on the projected image, and that controls image data to be output to the projector and projected;
A specific image projection control function for outputting and projecting image data of a specific color to a projector;
An edge detection function for detecting an edge of the image of the specific color with respect to a background image in the image captured by the camera in a state where image data of the specific color is projected by the projector by the specific image projection control function ;
A projection range position acquisition function for acquiring coordinate information of a position corresponding to the projection range included in the captured image based on the edge detected by the edge detection function;
Based on the coordinate information of the position of the projector projection range acquired by the projection range position acquisition function, the pointer instruction coordinate acquisition function for acquiring the coordinates of the light spot by the pointer on the image in the projection range;
Pointer emphasis that synthesizes an image that reduces the image brightness of a certain small area around the light spot by the pointer in correspondence with the coordinates of the light spot by the pointer in the projector projection range acquired by this pointer instruction coordinate acquisition function Display control function ,
A program to realize

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