JP2015018018A - Video processing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video processing apparatus that enables a television conference that accurately gives the persons the feel of participating in an actual conference.SOLUTION: A video processing apparatus 1 includes a camera 3 that photographs subjects and outputs image data corresponding to photographed images, a projector 2 that is placed on a placing surface TBf and projects projection light corresponding to input image data input thereto on the opposite side to the side photographed by the camera 3, an extension-contraction connection part 4 that connects the projector 2 with the camera 3 on the opposite side to the placing surface TBf of the projector 2 and can be extended and contracted in a first direction intersecting the placing surface TBf, and a lens shift mechanism that can change the height of a projection image projected by the projector 2 from the placing surface TBf.

Description

  The present invention relates to a video processing apparatus.

  2. Description of the Related Art A video conference system is known that is connected via a network at a plurality of distant points and performs a conference or the like by mutually transmitting and receiving video and audio. This video conference system includes a camera and a display device. As the display device, not only a CRT or a liquid crystal display but also a projector that uses a projector that is convenient to carry and can display on a large screen is known.

  In this video conference system, matching the line of sight of the person observing the displayed image with the line of sight of the displayed person image on the other side increases the realism of the meeting and facilitates communication. It becomes important in. In order to match both of these lines of sight, it is necessary to dispose the camera near the display device. When a projector is used as the display device, it is desirable that the camera be disposed in front of the screen. If the camera is arranged in front of the screen, the projection light from the projector will be reflected on the camera, making it difficult to see the projected image projected on the screen. Therefore, a technique has been proposed for the purpose of preventing projection light from the projector from being reflected on the camera and making it difficult to see the projected image (see, for example, Patent Document 1).

  The system (video conference system) described in Patent Literature 1 includes a projector, a camera installed so as to face the projector, and a projector and a video processing device connected to the camera. The camera is disposed between the screen and the projector. And the system of patent document 1 sets a dark area | region in the area | region which overlaps with a camera when the screen is seen from a projector on the projection image projected by the projector, and reduces the reflection of the projection light to a camera. It is configured as follows.

JP 2010-114768 A

  However, the system described in Patent Document 1 has a problem that the positioning of the camera and the setting of the dark region become complicated because the projector and the camera are physically separated. Moreover, the system described in Patent Document 1 has a problem that an observer at a position where a dark region can be observed is observed as a projection image lacking. Furthermore, since the system described in Patent Document 1 does not describe the shooting direction and angle of view of the camera, there is a problem that it is difficult to display a projected image as a realistic image.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A video processing apparatus according to this application example captures a subject, outputs an image data corresponding to the captured image, and input image data that is placed on the placement surface and input. A projector that projects the corresponding projection light to the side opposite to the side on which the imaging unit shoots, and the projector and the imaging unit connected on the side opposite to the side of the mounting surface of the projector; An expansion / contraction connection part that can be expanded and contracted in a first direction intersecting the surface, and a projection position changing part that can change the height of the projected image projected by the projector from the placement surface. And

According to this configuration, by arranging this video processing device at a plurality of points, an image captured by the imaging unit of one video processing device (for example, a subject such as a person positioned around a desk or desk) Image) can be displayed by the projector of the other video processing apparatus. As a result, this video processing apparatus can be used as a terminal apparatus for a video conference or the like.
In addition, the imaging unit is arranged on the opposite side of the projector mounting surface via the telescopic connection unit, that is, above the projector with the projector mounted on the mounting surface. And a projector projects a projection light on the opposite side to the side which an imaging part image | photographs. As a result, the imaging unit can be configured not to be positioned in the projection light of the projector, so that the projection light of the projector is reflected in the imaging unit, or the shadow of the imaging unit is displayed in the projection image displayed on the screen. There is nothing.
Furthermore, the imaging unit is connected to the projector via an extendable / contractible connecting part, and is configured such that the height of the projected image from the placement surface can be changed by the projection position changing part. Accordingly, the imaging unit can be moved in the vertical direction corresponding to the subject, or can be moved in the vertical direction corresponding to the observer who observes the projection image displayed on the screen. For example, adjustment of the position of the imaging unit so that the optical axis of the camera matches the eye of the person as the subject, adjustment to adjust the image of the person's eye displayed on the screen to the height of the observer's eye of the projection image, etc. It becomes possible. Accordingly, since the conversations at remote points can interact as if the lines of sight match each other during the video conference, it is possible to perform the video conference with an enhanced sense of reality.
In the video processing apparatus, the projector and the imaging unit are integrally configured via the telescopic connection unit, so that the portability is improved and the positioning of the projector and the imaging unit is stable, and the installation adjustment is possible. Simplification is possible.
Therefore, it is possible to provide a video processing apparatus that is easy to transport, easy to install, suppresses the deterioration of the image quality of the projected image to be displayed, and enables a video conference with high presence.

  Application Example 2 In the video processing device according to the application example, the projection position changing unit is configured to project the projection image from the placement surface in the expansion / contraction direction of the expansion / contraction connection unit in conjunction with expansion / contraction of the expansion / contraction connection unit. It is preferable to change the height.

  According to this configuration, the projected image moves in the expansion / contraction direction of the expansion / contraction connection part in conjunction with the expansion / contraction of the expansion / contraction connection part. As a result, the height of the projected image can be changed corresponding to the image captured by the imaging unit without operating the projection position changing unit by adjusting the expansion / contraction length of the expansion / contraction connection unit corresponding to the subject. It becomes. Therefore, it is possible to provide a video processing device that can simplify installation adjustment and enable a video conference with high presence.

  Application Example 3 In the video processing device according to the application example, it is preferable that the expansion / contraction connection unit includes an imaging support unit that supports the imaging unit so that an optical axis of the imaging unit is maintained horizontal.

  According to this configuration, since the imaging unit is supported by the photographing support unit described above, the optical axis is horizontal even when the mounting surface on which the projector is mounted is inclined with respect to the horizontal. The subject can be photographed from the horizontal direction. Thus, for example, even when the upper surface of the desk as the placement surface is inclined, a person or the like as a subject is photographed from the horizontal direction, and the person or the like is viewed from the front to the observer who observes the projected image. It can be recognized as an image. Therefore, it is possible to provide a video processing apparatus that is less affected by the state of the placement surface and can perform a video conference or the like with an enhanced sense of reality.

  Application Example 4 In the video processing apparatus according to the application example, the projector captures the size of the display range of the projection image in a second direction along the screen on which the placement surface and the projection image are displayed. Zoom adjustment that scales the image of the object within the display range, wherein at least one of the projector and the imaging unit is configured to be able to project larger than the width of the object in the second direction captured by the unit It is preferable to provide a part.

  According to this configuration, in the second direction, the projected image is displayed with a display range larger than the width of the object. Since at least one of the projector and the imaging unit includes a zoom adjustment unit, the width of the image of the object displayed on the screen is adjusted to be approximately the same as the width of the actual object. It becomes possible to do. Thus, for example, by using a desk with a rectangular mounting surface as an object, it is possible to observe as if the actual object and the image of the object displayed on the screen are continuous. Become. Therefore, it is possible to perform a video conference or the like with a higher sense of reality.

  Application Example 5 In the video processing device according to the application example, the detection unit that detects the height of the person's eyes from the placement surface based on the image of the person photographed by the imaging unit, and the detection And a control unit that controls the expansion / contraction length of the expansion / contraction connection part based on the detection result of the part.

  According to this configuration, since the video processing apparatus includes the detection unit and the control unit described above, when the imaging unit captures a person, the expansion / contraction connection unit is provided according to the height of the person's eyes to be captured. It is stretched. This makes it possible to equalize the height of the person's eyes to be photographed and the height of the imaging unit without operating the telescopic connection unit, and simplify the installation adjustment of the video processing device when performing a video conference or the like. Can be achieved.

  Application Example 6 In the video processing device according to the application example, the projector projects the projection light so that an edge on the placement surface side in the projection image is positioned higher than the placement surface, It is preferable that the imaging unit is configured to be able to photograph an object at a position higher than the placement surface in the first direction.

According to this configuration, the projector projects the projection light at a position higher than the placement surface, and the imaging unit is configured to be able to photograph the object at a position higher than the placement surface. As a result, the projector is placed on the placement surface at a position lower than the photographing surface (for example, the upper surface of the desk) of the object photographed by the imaging unit, so that the placement surface side of the image of the object in the projected image is displayed. In the first direction, it becomes possible to approach the height of the object. Therefore, even in a configuration using a projector with a large tilt angle of the projected light, the observer can observe as if the target object such as an actual desk and the image of the target object in the projected image are continuous. It is possible to provide a video processing device that enables a high-definition video conference and the like.
In addition, since the projector is mounted on the mounting surface at a position lower than the imaging surface, the projector is configured not to be positioned in front of the projection image when viewed from the observer observing the projection image around the object. This makes it possible to improve the visibility of the projected image.

  Application Example 7 In the video processing device according to the application example described above, it is preferable that a divergence angle of the projection light projected from the projector is larger than a field angle of the imaging unit.

  According to this configuration, it is possible to place the projector closer to the screen on which the projection image is displayed, as compared with the video processing device in which the spread angle of the projection light is smaller than the angle of view of the imaging unit. Therefore, the object captured by the imaging unit can be brought closer to the image of the object displayed on the screen, and the continuity of both can be observed more easily, making it possible to conduct a video conference with a higher sense of reality. Become.

  Application Example 8 In the video processing device according to the application example described above, a communication unit that is connected to a network and that outputs the image data and inputs the input image data; and any one of the imaging unit and the communication unit It is preferable to further include a switching unit that switches connection with the projector.

  According to this configuration, the video processing apparatus includes the communication unit and the switching unit described above. As a result, video processing devices can be arranged at a plurality of different points, the imaging unit and the projector can be connected, and the video processing device can be installed and adjusted according to the state of each point, and the switching unit can be switched. By connecting the communication unit and the projector, a video conference or the like can be easily performed between the two.

The figure which shows typically an example of the use condition of the video processing apparatus of 1st Embodiment. 1 is a perspective view schematically showing the appearance of a video processing apparatus according to a first embodiment. 1 is a block diagram showing a schematic configuration of a video processing apparatus according to a first embodiment. The graph which shows the relationship between the projection distance of the projector in 1st Embodiment, and the size of a projection image, and the relationship between the imaging distance of a camera, and the size of an imaging range. The schematic diagram which shows the projection image displayed on the screen at the time of performing a video conference using the video processing apparatus of 1st Embodiment. The schematic diagram for demonstrating the appearance of a projection image. The schematic diagram for demonstrating how the image of the projected desk looks. The schematic diagram which shows the state which has arrange | positioned the desk in front of the screen. The figure for demonstrating the installation adjustment method of the video processing apparatus of 2nd Embodiment. The graph which shows the relationship between the projection distance of a projector and the size of a projection image in 2nd Embodiment, and the relationship between the imaging distance of a camera, and the size of an imaging range. The figure which shows typically the example of the use condition of the video processing apparatus of 3rd Embodiment. The schematic diagram for demonstrating the video processing apparatus of a modification.

(First embodiment)
The video processing apparatus according to the first embodiment will be described below with reference to the drawings.
The video processing apparatus of this embodiment includes a camera and a projector as an imaging unit, and can be used as a terminal device such as a video conference system.
FIG. 1 is a diagram schematically illustrating an example of a usage state of a video processing device 1 according to the present embodiment, where (a) is a diagram of the video processing device 1 viewed from above, and (b) is a video processing device. FIG. 1 is a diagram of 1 viewed from the side, and FIG. 1C is a diagram of a screen on which a projection image projected from the projector is displayed viewed from the front.

As shown in FIG. 1, the video processing apparatus 1 includes a telescopic connection unit 4 that connects the projector 2 and the camera 3 in addition to the projector 2 and the camera 3 as an imaging unit.
In the video processing apparatus 1, the projector 2 is placed on the upper surface (mounting surface TBf) of the desk TB, and the camera 3 is disposed on the opposite side of the mounting surface TBf via the telescopic connection portion 4, that is, above the projector 2. It is arranged to be located.
The video processing apparatus 1 is placed on the end of the desk TB on the side where the screen Sc is placed, and the camera 3 is placed so as to capture the opposite side of the screen Sc. That is, the projector 2 projects the projection light on the side opposite to the side on which the camera 3 captures images.

  The video processing apparatus 1 projects an image taken by the camera 3 with the projector 2 and is output from another video processing apparatus 1 via a network such as an Internet line or an ISDN (Integrated Services Digital Network) line. The projector 2 can project the projection light corresponding to the input image data input to the video processing apparatus 1 onto the screen Sc.

[Configuration of video processing device]
Here, the configuration of the video processing apparatus 1 will be described in detail.
FIG. 2 is a perspective view schematically showing the external appearance of the video processing apparatus 1 of the present embodiment. FIG. 3 is a block diagram showing a schematic configuration of the video processing apparatus 1 of the present embodiment. In the following, for convenience of explanation, the direction in which the projector 2 projects the projection light is the + Y direction (front), the projector 2 is positioned so as to face the screen Sc, the upper direction of the projector 2 is the + Z direction, and the screen Sc. The right side is described as the + X direction.

  As shown in FIGS. 2 and 3, the video processing apparatus 1 includes a projector 2, a camera 3, an expansion / contraction connection unit 4, a communication unit 5, a switching unit 6, a microphone Mc, and a speaker Sp. In the present embodiment, the communication unit 5 and the switching unit 6 are arranged in the projector 2.

  As shown in FIG. 3, the projector 2 includes an image projection unit 20, a control unit 21, a storage unit 22, an image signal input unit 231, an image processing unit 232, an OSD processing unit 24, a light valve driving unit 25, a power supply circuit 26, The light source control unit 27, the input operation unit 28, the reception unit 29, the arm drive unit 4Dr, and the lens shift drive unit 204Dr are provided.

  The image projection unit 20 includes a light source 201, a liquid crystal light valve 202 as a light modulation device, a projection lens 203, a lens shift mechanism 204 as a projection position changing unit, and the like. The light source 201 has a discharge type lamp. The image projection unit 20 modulates the light emitted from the light source 201 by the liquid crystal light valve 202 and emits the modulated light from the projection lens 203. The light source 201 is not limited to the discharge type, and may be configured by various solid light emitting elements such as a laser diode, an LED (Light Emitting Diode), an organic EL (Electro Luminescence) element, and a silicon light emitting element. Further, the light modulation device is not limited to the liquid crystal light valve 202, and may be constituted by a device using a micromirror.

  The projection lens 203 is configured such that the ratio between the projection distance and the size of the projection image is a fixed focus. Further, the projection lens 203 has a short focal point, and is configured such that the spread angle θp of the projected light projected is larger than the angle of view θc of the camera 3 as shown in FIG. Thereby, the projector 2 is configured to be able to perform projection at a position close to the screen Sc, that is, so-called proximity projection. The projection lens 203 has a focus adjustment function.

  The lens shift mechanism 204 includes a movable portion (not shown) that supports the projection lens 203 and is movable in the vertical direction and the horizontal direction. In the lens shift mechanism 204, the movable portion is moved by the lens shift driving unit 204Dr based on an instruction from the control unit 21, and the projection lens 203 is moved in the vertical direction and the horizontal direction. The position of the projection image displayed on the screen Sc is changed by moving the projection lens 203. As described above, the lens shift mechanism 204 has a function of changing the height of the projection image projected by the projector 2 from the placement surface TBf and the position of the projection image in the left-right direction.

The control unit 21 includes a CPU (Central Processing Unit), a RAM (Random Access Memory) used for temporary storage of various data, and the like, and operates according to a control program stored in the storage unit 22 to operate the projector 2. Control over all operations.
The storage unit 22 includes a non-volatile memory such as a mask ROM (Read Only Memory), a flash memory, or an FeRAM (Ferroelectric RAM). The storage unit 22 stores a control program for controlling the operation of the projector 2, various setting data for defining the operation conditions of the projector 2, and the like.

  The image signal input unit 231 receives image information of various formats input from an external image output device (not shown), the camera 3, and the communication unit 5 via a cable (not shown) or a communication device. The input image information is output to the image processing unit 232 based on an instruction from the control unit 21. Note that the image signal input unit 231 may be provided with a receiving unit such as wireless communication or optical communication, and the image signal input unit 231 may be configured to input image information from an external device wirelessly.

  The image processing unit 232 defines various types of image information output from the image signal input unit 231 as image information representing the gradation of each pixel of the liquid crystal light valve 202, that is, a drive voltage applied to each pixel. Convert to image information. Further, the image processing unit 232 performs an image adjustment process for adjusting brightness, contrast, sharpness, hue, and the like on the converted image information based on an instruction from the control unit 21, and the processed image information Is output to the OSD processing unit 24.

The OSD processing unit 24 performs processing to superimpose an OSD (On Screen Display) image such as a menu image or a message image on the input image based on an instruction from the control unit 21. The OSD processing unit 24 includes an OSD memory (not shown), and stores OSD image information representing graphics, fonts, and the like that form an OSD image. When the control unit 21 instructs to superimpose the OSD image, the OSD processing unit 24 reads necessary OSD image information from the OSD memory, and from the image processing unit 232 so that the OSD image is superimposed at a predetermined position of the input image. The OSD image information is synthesized with the input image information. The image information combined with the OSD image information is output to the light valve drive unit 25.
Further, the OSD processing unit 24 outputs the image information output from the image processing unit 232 to the light valve driving unit 25 as it is when there is no instruction to superimpose the OSD image from the control unit 21.

  When the light valve driving unit 25 drives the liquid crystal light valve 202 according to the input image information, the liquid crystal light valve 202 modulates incident light according to the image information. The modulated light is projected from the projection lens 203 onto the screen Sc.

The power supply circuit 26 is supplied with commercial power such as AC 100V from the outside. The power supply circuit 26 converts a commercial power supply (AC power supply) into a DC power supply having a predetermined voltage and supplies power to each unit of the projector 2.
The light source control unit 27 controls the supply and stop of power to the light source 201 based on an instruction from the control unit 21, and switches between turning on and off the light source 201.

  The input operation unit 28 includes a plurality of operation keys for the user to give various instructions to the video processing apparatus 1. The operation keys of the input operation unit 28 include a power key, an input switching key for switching an input source, a menu key for displaying a setting menu for performing various settings, a cursor key for selecting a setting item from the menu, and various settings. There are a determination key for determining, a photographing height adjustment key for adjusting the height of the camera 3 by driving the arm driving unit 4Dr, a lens shift key for adjusting the position of the projected image by driving the lens shift driving unit 204Dr, and the like. .

  The receiving unit 29 receives an operation signal transmitted from a remote controller (remote controller Rc) capable of remote operation and outputs the operation signal to the control unit 21.

  The arm drive unit 4Dr changes the length of the telescopic connection unit 4 based on an instruction from the control unit 21 by operating the input operation unit 28 or the remote controller Rc. The height of the camera 3 supported by the expansion / contraction connection unit 4 and positioned above the projector 2 is adjusted from the projector 2 (mounting surface TBf) by changing the length of the expansion / contraction connection unit 4.

  The lens shift drive unit 204Dr moves the projection lens 203 by operating the lens shift mechanism 204 based on an instruction from the control unit 21 by operating the input operation unit 28 or the remote controller Rc.

The camera 3 includes an image sensor such as a CCD or CMOS, and a zoom adjustment unit, and is configured to be able to capture a moving image and a still image.
As shown in FIG. 1, the camera 3 takes a picture of a desk TB as a subject and a person around the desk TB. As shown in FIG. The image signal input unit 231 can be output via the unit 6. Further, the camera 3 is provided with a receiving unit (not shown) so that zoom adjustment by the remote controller Rc is possible.

As shown in FIG. 2, the telescopic connection part 4 includes an imaging support part 41 that supports the camera 3 and an arm part 42 that connects the imaging support part 41 and the projector 2, and intersects the placement surface TBf. It is configured to be extendable in the vertical direction as a direction.
The imaging support unit 41 includes a bottom surface portion 411 positioned below the camera 3 and a standing portion 412 that rises upward from both the left and right ends of the bottom surface portion 411. The camera 3 is supported so as to be rotatable about a central axis 412j extending in the left-right direction provided in the left and right upright portions. The central axis 412j is provided above the center of gravity of the camera 3, and the camera 3 maintains the optical axis 3C horizontal due to its own weight even when the video processing device 1 is tilted in the front-rear direction. That is, even when the projector 2 is placed on a placement surface that is inclined in the front-rear direction with respect to the horizontal plane, the optical axis 3C of the camera 3 is kept horizontal. Thus, the imaging support unit 41 supports the camera 3 so that the optical axis 3C is maintained horizontally.

The arm unit 42 includes a first arm 421 connected to the upper surface of the projector 2 and a second arm 422 connected to the bottom surface portion 411 of the imaging support unit 41.
The first arm 421 is formed in a cylindrical shape, and the second arm 422 is disposed at the center so as to be slidable in the vertical direction. A rack (not shown) is formed on the second arm 422, and the second arm 422 is meshed with a gear train mechanism (not shown) provided in the first arm 421. In the second arm 422, the driving force from the arm driving unit 4Dr provided in the projector 2 is transmitted to the rack via the wheel train mechanism in the first arm 421, and the protruding amount from the first arm 421. Is changed. The arm portion 42 changes its extension / contraction length by changing the protruding amount of the second arm 422 from the first arm 421.

  The arm unit 42 is configured to be foldable with respect to the projector 2. As shown in FIG. 2, the first arm 421 of the present embodiment is supported by the projector 2 so that the rear side of the base end on the projector 2 side is rotatable about a central axis 421j extending in the left-right direction. A lock portion 423 that fixes the front side of the base end of the first arm 421 is provided on the upper surface of the projector 2. The arm part 42 is folded with respect to the projector 2 when the lock part 423 is released, and when the arm part 42 is erected and the lock part is engaged with the arm part 42, the arm part 42 is erected with respect to the projector 2. Is maintained. Since the arm portion 42 is configured to be tiltable as described above, the video processing apparatus 1 can be easily transported.

  In the video processing apparatus 1 of the present embodiment, the telescopic connection portion 4 is attached to the projector 2 so that the optical axis of the projection light of the projector 2 is positioned on a vertical plane passing through the optical axis 3C of the camera 3. Note that the video processing apparatus 1 may be configured such that the optical axis of the projection light of the projector 2 is not positioned on a vertical plane passing through the optical axis 3C of the camera 3.

As shown in FIG. 3, the communication unit 5 is connected to the network Nt and inputs and outputs image data and audio data. Specifically, the communication unit 5 encodes the image data output from the camera 3 and the audio data output from the microphone Mc, and outputs the encoded data to the other video processing device 1 via the network Nt. The communication unit 5 decodes encoded input image data and audio data output from the other video processing device 1 and input via the network Nt, and outputs the input image data to the switching unit 6. Audio data is output to the speaker Sp.
The microphone Mc and the speaker Sp are connected to the communication unit 5 via a cable (not shown).

  The switching unit 6 switches the connection between one of the camera 3 and the communication unit 5 and the image signal input unit 231 by operating the input operation unit 28 or the remote controller Rc. When the camera 3 and the image signal input unit 231 are connected by the switching unit 6, image data from the camera 3 is output to the image signal input unit 231, and an image captured by the camera 3 is projected from the projector 2. . Then, the video processing apparatus 1 is in an installation adjustment state in which installation adjustment is possible with the camera 3 and the image signal input unit 231 connected.

  On the other hand, when the switching unit 6 is switched so that the communication unit 5 and the image signal input unit 231 are connected from the installation adjustment state, the input image data output from the other video processing device 1 via the network Nt is an image. Output to the signal input unit 231, the projector 2 projects a projection image corresponding to the input image data from the other video processing device 1. The video processing apparatus 1 is in a bidirectional communication state in which a video conference can be performed in a state where the communication unit 5 and the image signal input unit 231 are connected.

[Installation method of video processing equipment]
A method for installing the video processing apparatus 1 will be described.
First, as shown in FIG. 1, the screen Sc and the desk TB are installed so that the desk TB is located at the center in the left-right direction (± X direction) of the screen Sc. Then, the projector 2 is placed in the vicinity of the end of the screen Sc on the desk TB so that the projection light from the projector 2 is projected onto the screen Sc. In the present embodiment, a case will be described in which a desk TB having a rectangular mounting surface TBf on which the projector 2 is mounted is used.

  In a state where the projector 2 is placed on the desk TB so as to project the projection light onto the screen Sc, the camera 3 is positioned above the projector 2 via the telescopic connection portion 4 and is opposite to the screen Sc. The camera is ready for shooting. The camera 3 is in a state in which the width of the desk TB in the second direction (left and right direction, ± X direction) along the screen Sc on which the placement surface TBf and the projection image are displayed can be photographed.

Next, the switching unit 6 puts the video processing apparatus 1 into an installation adjustment state (a state where the camera 3 and the image signal input unit 231 are connected). As a result, the screen Sc displayed by the camera 3 and images of persons (persons A and B in FIG. 1) located around the desk TB are displayed on the screen Sc.
As shown in FIG. 1A, in the second direction (left-right direction, ± X direction), the display range 80x of the projected image is larger than the size of the object (desk TB) photographed by the camera 3. The interval between the projector 2 and the screen Sc is set so that That is, the camera 3 cannot shoot the end of the desk TB near the screen Sc, but as shown in FIG. 1A, the left and right corners TBa and TBb closest to the screen Sc in the range that the camera 3 can shoot. The size (width 90x) between (the −X side is the corner TBa and the + X side is the corner TBb) is regarded as the size of the desk TB, and the display range 80x is larger than the width 90x of the desk TB. An interval between the projector 2 and the screen Sc is set. That is, the projector 2 is installed so that the size of the display range 80x of the projection image in the second direction can be projected larger than the horizontal width 90x of the object in the second direction taken by the camera 3. Then, a projected image including images of both corners TBa and TBb of the desk TB is displayed on the screen Sc.

  Next, the arm drive unit 4Dr is operated to expand and contract the expansion / contraction connection unit 4 to adjust the height of the camera 3. For example, as shown in FIG. 1 (a), a person A who sits on a chair around a desk TB and is positioned in front of the screen Sc operates the remote controller Rc so that the camera has a camera with the eye level of the person A. The expansion / contraction connection part 4 is expanded and contracted so that the optical axes 3C of the first and second optical axes 3C become substantially the same height.

Next, the lens shift mechanism 204 is operated to adjust the vertical position of the projected image displayed on the screen Sc. For example, the person A shown in FIG. 1 operates the lens shift mechanism 204 so that the center of the projected image becomes the same height as the optical axis 3C of the camera 3 by operating the remote controller Rc. That is, the person A adjusts so that the position of the eye of the person A in the projected image displayed on the screen Sc is displayed at a position substantially the same height as the optical axis 3C of the camera 3. The center can be set at substantially the same height as the optical axis 3C of the camera 3.
With the above settings, the video processing apparatus 1 is adjusted so that the eyes of the person A, the optical axis 3C of the camera 3, and the center of the projected image are substantially aligned when viewed from the person A.

  Next, by performing zoom adjustment of the camera 3, the width of the image of the desk TB displayed on the screen Sc is set to be substantially the same as the width of the actual desk TB. Specifically, the zoom adjustment of the camera 3 is performed so that the distance between the images of the corner portions TBa and TBb of the desk TB displayed on the screen Sc is substantially the same as the horizontal width 90x of the actual desk TB. This zoom adjustment is performed, for example, when the person A shown in FIG. 1 operates the remote controller Rc.

  Note that the video processing apparatus 1 of the present embodiment is configured such that the optical axis of the projection light of the projector 2 is positioned on a vertical plane passing through the optical axis 3C of the camera 3, so that the horizontal direction after this zoom adjustment is performed. The positional deviation between the image of the desk TB and the actual desk TB is caused by the mounting tolerance of each component of the video processing apparatus 1, the positional accuracy of the projector 2 with respect to the screen Sc, and the like. And when this position shift occurs, the position shift between the image of the desk TB and the actual desk TB can be accurately adjusted by adjusting the lens shift mechanism 204 in the left-right direction. Further, since the camera 3 is not located in the projection light emitted from the projector 2, the projection light of the projector 2 is reflected on the camera 3, and the shadow of the camera 3 is displayed in the projection image displayed on the screen Sc. There is nothing to do.

Here, it will be described that the width of the image of the subject (desk TB) displayed on the screen Sc and the actual width of the desk TB can be set to be substantially the same.
FIG. 4 is a graph showing the relationship between the projection distance of the projector 2 and the size of the projection image, and the relationship between the shooting distance of the camera 3 and the size of the shooting range.

In the projector 2, since the projection lens 203 has a fixed focal point, the spread angle θp of the projection light is constant, and as shown by PJ in FIG. 4, the size of the projection image increases as the projection distance increases. On the other hand, since the camera 3 has a zoom function, the angle of view θc can be changed, and as shown in the CM of FIG. 4, changing the size of an image to be shot without changing the shooting distance, that is, The size of the image displayed on the screen Sc can be changed. Then, by adjusting the zoom of the camera 3 in accordance with the position (projection distance) of the projector 2 set with respect to the screen Sc, the width of the image of the object (desk TB) displayed on the screen Sc The width of the actual object can be set to be substantially the same.
Thus, since at least one of the projector 2 and the camera 3, in this embodiment, the camera 3 includes a zoom adjustment unit that scales the image of the object in the display range, the width of the image of the object, It can be set so that the actual width of the object is substantially the same.

[Projected image in two-way communication]
Here, a case where the video processing device 1 is adjusted and installed as described above at two points X and Y separated from each other is exemplified, and the projection displayed on the video processing device 1 in the bidirectional communication state at the point X The image will be described.
The video processing apparatus 1 of this embodiment is adjusted and installed as described above at two points X and Y apart from each other, and the two-way communication state (the communication unit 5 and the image signal input unit 231 are connected from the installation adjustment state) Switched to the state), a video conference is possible between the two video processing apparatuses 1.

  FIG. 5 is a schematic diagram illustrating a projected image displayed on the screen Sc when a video conference is performed using the video processing device 1. Specifically, FIG. 5 shows the projection light corresponding to the image data output from the video processing device 1 at the point Y by the video processing device 1 at the point X (input image data in the video processing device 1 at the point X). It is a figure which shows typically the state which projected on the screen Sc. The use state of the video processing apparatus 1 at the point Y will be described assuming that the person A, B is seated around a desk TB having a rectangular mounting surface TBf, as shown in FIG. . Further, the case where the video processing apparatus 1 is placed on a desk TB having a placement surface TBf rectangular also at the point X will be described as an example.

  As shown in FIG. 5A, since the video processing apparatus 1 is adjusted as described above, the video processing apparatus 1 is viewed from an observer who observes the projected image from the position facing the screen Sc across the desk TB at the point X. And the real desk TB and the image of the desk TB in the projected image can be seen continuously. Further, since it is possible to observe that the images Ia and Ib of the persons A and B at the point Y are located in the back of the image of the desk TB that can be viewed continuously with the real desk TB, the observer can see the back of the desk TB. It can be felt as if persons A and B exist. When viewed from an observer observing the projection image from a position directly opposite the screen Sc across the desk TB at the point X, the distance from the eye to the screen Sc is longer than the distance from the eye to the camera 3. The image displayed on Sc looks a little longer in depth, but since the continuity between the actual desk TB and the image on the desk TB is maintained, the projected image can be observed without a sense of incongruity.

  In addition, when the person A observes the center of the projection image, that is, the position of the optical axis 3C of the camera 3 at the point Y, the observer who observes the projection image at the point X seems to be in line with the image Ia. Can be observed.

  When viewed from an observer who observes the projected image from the left side from the position facing the screen Sc across the desk TB at the point X, as shown in FIG. 5B, the actual desk TB and the desk TB in the projected image are displayed. Although the image appears to be bent, the image of the desk TB appears to be connected to the actual desk TB, so that the depth of the image of the desk TB and the images Ia and Ib of the persons A and B can be felt. .

Here, the appearance of the projected image will be described in more detail.
FIG. 6 is a schematic diagram for explaining how the projected image looks. Specifically, FIG. 6A is a side view of the state in which the camera 3 captures the objects C and D at the point Y, and the camera 3 and the mounting surface TBf in FIG. 1B are extracted. It is the figure which mounted the objects C and D on mounting surface TBf. FIGS. 6B and 6C are views of the state in which the image processing apparatus 1 at the point X receives the image data output from the camera 3 at the point Y and observes the projected image projected from the side. (C) is a figure which shows the state which observes a projection image from the position farther than (b).

  As shown in FIG. 6A, the objects C and D photographed by the camera 3 at the point Y are two-dimensional equivalent to those projected onto the virtual plane Vf perpendicular to the optical axis 3C within the photographing range. Become a statue. That is, on the virtual plane Vf, the image Vd of the object D arranged at a position farther from the object C than the camera 3 is positioned closer to the optical axis 3C than the image Vc of the object C. The projection position angle formed by the line connecting the camera 3 and the image projected on the virtual plane Vf and the optical axis 3C is such that the projection position angle θvd of the image Vd is smaller than the projection position angle θvc of the image Vc. . The projection position angles θvc and θvd do not change regardless of the position of the virtual plane Vf in the direction of the optical axis 3C, and the information of the image captured by the camera 3 is determined by the projection position angle.

  On the other hand, when the projection based on the image data photographed at the point Y is performed at the point X, the images Ic and Id of the objects C and D are projected onto the screen Sc as shown in FIG. The angles θic and θid formed by the line connecting the observer's viewpoint Vw and the images Ic and Id and the horizontal line HL at the observer's viewpoint Vw coincide with the projection position angles θvc and θvd shown in FIG. If the observation is performed from the viewpoint Vw, the sense of depth of the captured image can be reproduced.

  Here, when the image data photographed at the point Y is image data obtained by photographing only the objects C and D, the observer sees the objects C and D somewhere on the line connecting the viewpoint Vw and the images Ic and Id. I only know that exists. However, if the image data photographed at the point Y is also photographed at the same time as the desk TB on which the objects C and D are placed, the observer will be able to place the objects C and D horizontally on the desk TB. Therefore, it appears that the objects C and D are present at a position equivalent to the actual position on the desk TB. As described above, the projected images Ic and Id reproduce the sense of depth of the captured images Vc and Vd by the captured image data.

Here, if the distance of the virtual plane Vf from the camera 3 is equal to the distance from the viewpoint Vw to the screen Sc, the virtual plane Vf and the projected image have the same size.
When the observer moves the viewpoint Vw away from the screen Sc, as shown in FIG. 6C, the images Ic and Id have angles θic and θid smaller than before the viewpoint Vw is moved away, and before the viewpoint Vw is moved away. The objects C ′ and D ′ will appear to be located in the back.

Here, the fact that the projected image is observed with a sense of depth will be described with reference to the projected image of the table TB.
FIG. 7 is a schematic diagram for explaining how the image of the projected table TB looks. (A) is a view of the observer's viewpoint Vw and the screen Sc as viewed from above, and (b). Is a view of the viewer's viewpoint Vw and the screen Sc viewed from the right side, and FIG. 5C is a front view of the screen Sc. In addition, the projection image in FIG. 7 shows the case where the image which image | photographed the desk TB shown in FIG. 1 is displayed.

As shown in FIG. 1A, the camera 3 at the point Y has a corner portion TBc, TBd (+ X side on the opposite side of the corner portion TBa, TBb from the corner portion TBa, TBb near the screen Sc of the desk TB. (Including TBc and −X side as corner portion TBd).
The image of the desk TB displayed on the screen Sc at the point X is, as shown in FIGS. 7A and 7B, the image ITd corresponding to the corner portion TBd than the image ITa corresponding to the corner portion TBa. Located near the center of the screen Sc. From the observer, the corner portion TBd ′ appears to be a desk positioned behind the corner portion TBa ′.

FIG. 8 is a schematic diagram showing a state in which the desk TB is arranged in front of the screen Sc, and is a view in which the desk TB is added to FIG. FIG. 8 is a diagram in which the video processing device 1 placed on the desk TB is omitted.
As described above, when the image processing apparatus 1 is installed and adjusted, as shown in FIG. 8, when viewed from an observer observing the projection image from a position facing the screen Sc across the desk TB, the real desk TB is obtained. And the image of the desk TB displayed are observed as being continuous.

Here, the position of the observed image will be described using the distance from the vertical plane VL (horizontal distance h) passing through the perpendicular from the viewpoint Vw to the screen Sc and the distance from the horizontal plane HL (vertical distance v). To do.
As shown in FIGS. 7A and 7B, the horizontal distance hb and the vertical distance vb of the image ITb are smaller than the horizontal distance ha and the vertical distance va of the image ITa, respectively. If the ridge line formed by the mounting surface TBf and the side surface of the desk TB is arranged in parallel with the optical axis 3C, the extension line of the ridge line is on the extension line of the optical axis 3C as shown in FIG. Displayed as a perspective view with vanishing points.

When the viewpoint Vw is further away from the screen Sc, the far side of the image of the desk TB including the corner portion TBd ′ appears to be farther away, so the line on the far side of the image (on the optical axis 3C) in FIG. (Close line) will be visible in the back. Further, the angle θ formed by the lower line of the image of the desk TB and the image of the ridge line is a constant value represented by θ = atan (v / h) regardless of the depth. That is, in the image of the desk TB, the depth becomes longer as the observation position moves away from the screen Sc, but the angle θ of the ridge line does not change.
Thus, the projected image is displayed so that the observer feels the depth.

As described above, according to the video processing apparatus 1 of the present embodiment, the following effects can be obtained.
(1) The camera 3 is disposed above the projector 2 via the expansion / contraction connection part 4, and the projector 2 projects the projection light on the side opposite to the side on which the camera 3 captures images. Thereby, since the camera 3 is not located in the projection light of the projector 2, the projection light of the projector 2 is reflected in the camera 3, and the shadow of the camera 3 is displayed in the projection image displayed on the screen Sc. There is no.
In addition, the camera 3 is connected to the projector 2 via an extendable extension / contraction connection part 4, and is configured such that the height of the projection image from the placement surface TBf can be changed by the lens shift mechanism 204. Accordingly, the camera 3 can be moved in the vertical direction corresponding to the subject, or can be moved in the vertical direction corresponding to the observer observing the projection image displayed on the screen. For example, as described above, the position of the camera 3 is adjusted so that the optical axis 3C of the camera 3 matches the eye of the person as the subject, or the person displayed on the screen Sc at the height of the observer's eye of the projected image. Adjustment to match the image of the eye is possible. Accordingly, since the conversations at remote points can interact as if the lines of sight match each other during the video conference, it is possible to perform the video conference with an enhanced sense of reality.
Further, in the video processing apparatus 1, since the projector 2 and the camera 3 are integrally configured via the telescopic connection portion 4, the portability is improved and the positioning of the projector 2 and the camera 3 is stable. The installation adjustment can be simplified.
Therefore, it is possible to provide a video processing apparatus that is easy to transport, easy to install, suppresses the deterioration of the image quality of the projected image to be displayed, and enables a video conference with high presence.

  (2) Since the telescopic connection portion 4 includes the imaging support portion 41 that supports the camera 3 so that the optical axis 3C is maintained horizontal, the mounting surface TBf is inclined with respect to the horizontal. Even in this case, the optical axis 3C is kept horizontal, and the subject can be photographed from the horizontal direction. Thereby, for example, a person or the like as a subject can be photographed from the horizontal direction, and an observer who observes the projection image can recognize the person or the like as an image viewed from the front. Therefore, it is possible to provide the video processing apparatus 1 that is less affected by the state of the placement surface TBf and can perform a video conference or the like with an enhanced sense of reality.

  (3) In the second direction (left-right direction), the display range of the projected image is set larger than the horizontal width 90x. Since at least the camera 3 of the projector 2 and the camera 3 includes the zoom adjustment unit, the width of the desk image displayed on the screen Sc is adjusted to be approximately the same as the actual desk width. be able to. This makes it possible to observe as if the actual desk TB and the desk image displayed on the screen are continuous. In addition, since it is possible to observe the sense of depth of the displayed image of the desk TB and the images Ia and Ib of the persons A and B, it is possible to perform a video conference or the like with a higher sense of reality.

  (4) The spread angle θp of the projection light is larger than the angle of view θc of the camera 3, and the projector 2 is configured to be able to perform projection at a position close to the screen Sc, so-called proximity projection. Thereby, the desk TB on which the video processing apparatus 1 is placed can be brought close to the screen Sc. Therefore, since the object (desk TB) photographed by the camera 3 and the image of the object displayed on the screen Sc can be brought closer to each other and the continuity of both can be observed more easily, a video conference with a higher sense of reality can be performed. Can be done.

  (5) The video processing apparatus 1 includes the communication unit 5 and the switching unit 6 and is configured to be switched between the installation adjustment state and the bidirectional communication state. Thereby, the video processing device 1 can be arranged at a plurality of different points, and the video processing device 1 can be installed and adjusted corresponding to the state of each point in the installation adjustment state, and switched to the bidirectional communication state, A video conference or the like can be easily held between the two.

(Second Embodiment)
Hereinafter, the video processing apparatus 12 according to the second embodiment will be described with reference to the drawings. In the following description, the same structure and the same members as those of the video processing apparatus 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted or simplified.
The video processing apparatus 12 according to the present embodiment includes a detection unit (not shown) that detects the height of the person's eyes captured from the placement surface TBf based on the person's image captured by the camera 3. . Then, in the installation adjustment state, the video processing device 12 detects the eye height of the person photographed by the camera 3, and the expansion / contraction connection unit 4 and the lens shift mechanism 204 operate in conjunction with the detected result. The height of the camera 3 and the height of the projection image projected on the screen Sc are set. Further, the projector 2 in the video processing device 12 includes a projection lens 203 having a zoom adjustment unit that can change a projection image by operating the remote controller Rc.

Here, an adjustment method when installing the video processing device 12 will be described.
FIG. 9 is a diagram for explaining a method of adjusting the installation of the video processing device 12. Specifically, FIG. 9A is a diagram schematically illustrating an example of the usage state of the video processing device 12, and in the same manner as illustrated in FIG. 1A, persons A and B are seated around the desk TB. FIG. 5B is a flowchart for explaining the operation of the video processing device 12 when performing installation adjustment.

  First, as described in the first embodiment, the video processing device 12 is placed in the vicinity of the end of the screen Sc on the desk TB so that the projection light from the projector 2 is projected onto the screen Sc. In addition, the expansion / contraction length of the expansion / contraction connection part 4 is set to an initial length (for example, the shortest length).

  Next, in the left-right direction (± X direction), the interval between the projector 2 and the screen Sc is set so that the display range 80x of the projected image is larger than the size (horizontal width 90x) of the desk TB photographed by the camera 3. Set (step S101). In step S101, since the projection lens 203 of the projector 2 is provided with a zoom adjustment unit, the display range of the projected image is not only adjusted by the distance between the projector 2 and the screen Sc but also by zoom adjustment by operating the remote controller Rc. 80x can be set to be larger than the size (horizontal width 90x) of the table TB photographed by the camera 3.

  Next, the persons A and B seated around the desk TB are photographed by the camera 3, and the eye heights of the persons A and B from the desk TB (mounting surface TBf) are detected based on the photographed image data. (Step S102). Specifically, image data obtained by photographing the persons A and B is output to a detection unit (not shown) via the image signal input unit 231 of the projector 2. The detection unit analyzes the input image data to detect the eye height of the person imaged with respect to the placement surface TBf, and outputs the detection result to the control unit 21. In addition, when the eye heights of the persons A and B are different from each other, they can be adjusted to one of them or set to an average height of both.

  Based on the detection result from the detection unit, the control unit 21 controls the expansion / contraction length of the expansion / contraction connection unit 4 so that the height of the optical axis 3C of the camera 3 substantially matches the height of the human eye. The expansion / contraction length corresponding to the eye height is stored in advance in the projector 2 as expansion / contraction length data, and the expansion / contraction connection unit 4 is driven by the arm drive unit 4Dr based on an instruction from the control unit 21 to detect the detected eye. The expansion / contraction length corresponding to the height is set (step S103).

Further, the control unit 21 drives the lens shift driving unit 204Dr according to the detection result of the detection unit, and the height of the center of the projection image (the height from the placement surface TBf) is approximately the height of the human eye. The lens shift mechanism 204 is controlled so as to match.
The position of the projection lens 203 corresponding to the eye height is stored in the projector 2 in advance, and the lens shift mechanism 204 is driven and detected by the lens shift drive unit 204Dr based on an instruction from the control unit 21. The projection lens 203 is moved in accordance with the height of. Then, the projected image is set so that the center height from the placement surface TBf substantially matches the height of the human eye (step S104).

  Next, by adjusting the zoom of the projector 2 or the camera 3, the width of the image of the desk TB displayed on the screen Sc is set to be substantially the same as the width of the actual desk TB (step S105). The camera 3 may not be provided with a zoom function and may be configured with a fixed focus.

FIG. 10 is a graph showing the relationship between the projection distance of the projector 2 and the size of the projection image, and the relationship between the shooting distance of the camera 3 and the size of the shooting range.
If the camera 3 is configured with a fixed focus, since the angle of view is constant, the larger the shooting distance, the larger the size of the shooting range. On the other hand, since the projector 2 has a zoom function, the size of the projected image can be changed without changing the projection distance. Then, by adjusting the zoom of the projector 2 in accordance with the shooting distance of the camera 3, the width of the image of the desk TB displayed on the screen Sc and the actual width of the desk TB become substantially the same. Can be set. As described above, since at least one of the projector 2 and the camera 3 includes the zoom adjustment unit that scales the image of the object in the display range, the width of the image of the object is substantially the same as the width of the actual object. Can be adjusted.

  As described above, installation adjustment of the video processing device 12 is completed, installation adjustment of the video processing device 12 is performed at other points, and when each video processing device 12 is switched to the bidirectional communication state, a video conference or the like is possible. It becomes.

As described above, according to the video processing apparatus 12 of the present embodiment, the following effects can be obtained in addition to the effects of the video processing apparatus 1 of the first embodiment.
Since the video processing device 12 includes the detection unit and the control unit 21 described above, when the camera 3 captures a person, the expansion / contraction connection unit 4 is expanded / contracted according to the eye height of the person to be captured, The height of the center of the projected image substantially matches the height of the human eye. Thereby, it becomes possible to make the height of the eye of the person to be photographed, the height of the camera 3 and the center height equal to the projected image without operating the telescopic connection part 4 and the lens shift mechanism 204, It is possible to simplify the installation adjustment of the video processing device 12 when a video conference or the like is performed with a sense of reality.

(Third embodiment)
Hereinafter, the video processing device 13 according to the third embodiment will be described with reference to the drawings. In the following description, the same structure and the same members as those of the video processing apparatus 1 of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted or simplified.
The projector 300 in the video processing device 13 of the present embodiment performs so-called tilt projection, in which the projection light is projected above the position facing the projector, similarly to the projector 2 in the video processing device 1 of the first embodiment. The tilt angle (upward angle of the projection light with respect to the mounting surface) is set larger than the tilt angle of the projector 2.

  FIG. 11 is a diagram schematically illustrating an example of a usage state of the video processing device 13 according to the present embodiment. FIG. 11A is a diagram of the video processing device 13 viewed from above, and FIG. 11B is a video processing device. FIG. 13C is a view of the screen Sc on which a projection image projected from the projector 300 is displayed as viewed from the front.

  As shown in FIG. 11, the projector 300 is lower than the desk TB on which the persons A and B participating in the video conference are sitting, and is placed on the placement surface STf of the table ST arranged between the desk TB and the screen Sc. Placed. As shown in FIG. 11B, the projector 300 has an angle θe upward with respect to the placement surface STf even in the projection light 2Le which is the lowermost of the projection light 2L, and the projection light 2L Projection light is projected so that all of the angles become elevation angles. More specifically, the projector 300 projects the projection light such that the edge (lower end 80d) on the placement surface STf side in the projection image is located higher than the placement surface STf and lower than the upper surface TBu of the desk TB.

The camera 3 photographs the upper surface TBu of the object (desk TB) at a position higher than the placement surface STf and the persons A and B. The projected image displayed on the screen Sc is displayed such that the placement surface STf side in the image of the desk TB approaches the upper surface TBu of the actual desk TB in the first direction (vertical direction).
Further, the projector 300 is formed with such a thickness that the upper surface is lower than the upper surface TBu of the desk TB, so that the projector 300 is not positioned in front of the projected image when viewed from the persons A and B sitting around the desk TB. Is arranged.
As described in the first embodiment, the video processing device 13 adjusts the height of the camera 3 and the projection image in the installation adjustment state, and performs a video conference or the like in the two-way communication state.

As described above, according to the video processing apparatus 13 of the present embodiment, the following effects can be obtained in addition to the effects of the video processing apparatus 1 of the first embodiment.
Even in the configuration using the projector 300 with a large tilt angle of the projected light, the observer can observe as if the object such as the actual desk TB and the image of the object in the projected image are continuous, It is possible to provide the video processing device 13 that enables a high-definition video conference or the like.
In addition, since the projector 300 is placed on the placement surface STf at a position lower than the upper surface TBu of the desk TB, the projector 300 appears before the projection image as viewed from the observer who observes the projection image around the desk TB. It is possible to configure so as not to be positioned, and the visibility of the projected image can be improved.

(Modification)
In addition, you may change the said embodiment as follows.
The lens shift mechanism 204 in the first embodiment is driven by the operation of the remote controller Rc and is configured to change the height of the projected image with respect to the placement surface TBf. The lens shift mechanism 204 may be driven in conjunction with the expansion / contraction of the unit 4 so that the height of the projection image with respect to the placement surface TBf is changed in the expansion / contraction direction of the expansion / contraction connection unit 4.
Thus, by adjusting the expansion / contraction length of the expansion / contraction connection unit 4 corresponding to the subject, the height of the projection image can be changed corresponding to the image captured by the camera 3 without operating the lens shift mechanism 204. It becomes possible. Therefore, it is possible to provide the video processing apparatus 1 that can simplify installation adjustment and enable a video conference or the like with a high presence.

  In the embodiment, the lens shift mechanism 204 is configured as a projection position changing unit. However, the projector 2 is provided with a leg portion that abuts the installation surface to support the main body of the projector 2 and can be vertically expanded and contracted. You may comprise a part as a projection position change part.

In the projectors 2 and 300 of the above-described embodiment, the projection lens 203 is configured with a short focus. However, if the projection distance is usable in an environment where a video conference or the like is performed, a projection lens that is not a short focus is used. It is also possible to use a provided projector.
FIG. 12 is a schematic diagram for explaining a video processing apparatus 14 according to a modification.
As shown in FIG. 12A, the projector 400 in the video processing device 14 is configured to include a projection lens in which the divergence angle θp of the projected light to be projected is smaller than the field angle θc of the camera 3. And as shown in FIG.12 (b), although the distance with respect to the screen Sc becomes larger than the projector 2 of 1st Embodiment (refer FIG.1 (b)), as for the projector 400, the projection image with the realistic sensation is shown. Display is possible.

  In the embodiment, a desk TB having a rectangular mounting surface TBf is used as a subject. However, other than a rectangular shape, for example, a table or the like may be used. By installing the video processing device so that the center of the round table is the lower end of the image taken by the camera 3, it is possible to observe as if it is continuous with the round table projected on the screen.

  In the second embodiment, it is configured to set the height of the projection image (step S104) after setting the expansion / contraction length of the expansion / contraction connection part 4 (step S103), but after setting the height of the projection image, The expansion / contraction length of the expansion / contraction connecting part 4 may be set, or both settings may be performed substantially simultaneously.

  The communication unit 5 and the switching unit 6 may be configured separately from the projector 2, and a configuration that does not include the communication unit 5 and the switching unit 6 may be used as the video processing device.

The arm drive unit 4Dr of the above embodiment is disposed in the projector 2, but may be configured to be provided in the telescopic connection unit 4.
Further, the projector Sp and the microphone Mc may be built in the projector 2.

  The camera 3 of the above embodiment is supported so as to be rotatable about a central axis 412j extending in the left-right direction, and is configured so that the optical axis 3C is kept horizontal, but rotates about the central axis 412j. In addition to being supported, it may be configured to be supported rotatably about a central axis extending in the front-rear direction. As a result, even when the placement surface TBf is inclined in the left-right direction, the camera 3 is maintained horizontal in the left-right direction, and the tilt of the image to be captured can be prevented.

  DESCRIPTION OF SYMBOLS 1,12,13,14 ... Video processing apparatus, 2,300,400 ... Projector, 2L ... Projection light, 2Le ... Projection light, 3 ... Camera, 3C ... Optical axis, 4 ... Telescopic connection part, 4Dr ... Arm drive part DESCRIPTION OF SYMBOLS 5 ... Communication part, 6 ... Switching part, 21 ... Control part, 41 ... Imaging support part, 42 ... Arm part, 80d ... Lower end, 80x ... Display range, 90x ... Horizontal width, 201 ... Light source, 202 ... Liquid crystal light valve, 203 ... projection lens, 204 ... lens shift mechanism, 204Dr ... lens shift drive unit, 231 ... image signal input unit, 232 ... image processing unit.

Claims (8)

An imaging unit that shoots a subject and outputs image data corresponding to the captured image;
A projector mounted on a mounting surface and projecting projection light corresponding to input image data to the side opposite to the side where the imaging unit captures;
An extension / contraction connection part that connects the projector and the imaging unit on the side opposite to the placement surface side of the projector, and that can extend and contract in a first direction intersecting the placement surface;
A projection position changing unit capable of changing the height from the placement surface of the projection image projected by the projector;
A video processing apparatus comprising: The video processing apparatus according to claim 1,
The projection position changing unit changes the height of the projection image from the placement surface in the expansion / contraction direction of the expansion / contraction connection unit in conjunction with expansion / contraction of the expansion / contraction connection unit. The video processing apparatus according to claim 1 or 2, wherein
The video processing apparatus, wherein the expansion / contraction connection unit includes an imaging support unit that supports the imaging unit so that an optical axis of the imaging unit is maintained horizontally. The video processing device according to any one of claims 1 to 3,
The projector has a display area of the projection image in the second direction along the placement surface and the screen on which the projection image is displayed larger than the width of the object in the second direction taken by the imaging unit. Configured to be projectable,
At least one of the projector and the imaging unit includes a zoom adjustment unit that scales an image of the object within the display range. The video processing apparatus according to any one of claims 1 to 4,
A detection unit that detects an eye height of the person from the placement surface based on an image of the person captured by the imaging unit;
A control unit for controlling the expansion / contraction length of the expansion / contraction connection unit based on the detection result of the detection unit;
A video processing apparatus comprising: The video processing device according to any one of claims 1 to 5,
The projector projects the projection light such that an edge on the placement surface side in the projection image is positioned higher than the placement surface,
The video processing apparatus, wherein the imaging unit is configured to be able to photograph an object at a position higher than the placement surface in the first direction. The video processing device according to any one of claims 1 to 6,
The image processing apparatus according to claim 1, wherein a spread angle of the projection light projected from the projector is larger than a field angle of the imaging unit. The video processing device according to any one of claims 1 to 7,
A communication unit connected to a network for outputting the image data and inputting the input image data;
A switching unit that switches connection between the imaging unit and the communication unit, and the projector;
A video processing apparatus, further comprising:

Images