JP2005079727A - Photographed image projecting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable easily re-projecting an image of a subject which has been once photographed. <P>SOLUTION: Upon receiving image data of a document material A photographed by a document camera 3, a computer 2 applies image processing to the received image data and outputs them to a projector 1. The projector 1 displays an image on a screen S on the basis of the corrected image data from the computer 2. Also, the computer 2 stores the image data subjected to the image processing. Then, the computer 2 displays the stored image data in a preview form in an order desired by a user. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a captured image projection apparatus.

In recent years, as a photographed image projection device, a document material as a subject placed on a platen by a user is photographed by a camera, and image data of the document material photographed by the camera is stored in a storage device of a computer for image processing. In some cases, an image of a written document is enlarged and projected on a screen using a projector (see, for example, Patent Document 1).
JP 2002-354331 A (page 2-3, FIG. 1)

However, in the conventional photographed image projection apparatus, in order to project the document material that has been projected once, the document material must be photographed again by the camera. In addition, it takes time to perform document alignment and processing for photographing. At the same time, it takes time to find the desired written material.
The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a photographed image projecting apparatus that can easily re-project a photographed subject image once.

In order to achieve this object, a captured image projection apparatus according to the first aspect of the present invention provides:
In a captured image projection device that projects an image of a captured subject on a screen,
A camera for photographing the subject and outputting image data of the photographed subject;
A projection unit that projects an image based on the image data output by the camera onto the screen;
And a storage unit that stores and stores image data of an image projected on the screen by the projection unit.

  A storage control unit may be provided that stores the image data in the storage unit and reads the stored image data from the storage unit.

  The storage control unit may store image information regarding the image data together with the image data in the storage unit.

  The storage control unit may store a preview image as image information related to the image data.

A monitor display unit for monitoring and displaying an image based on the image data read from the storage unit;
The storage control unit may read a plurality of image data stored in the storage unit, and cause the display unit to display the read image data on the monitor in the order of use frequency of the image data.

  The storage control unit may determine the usage frequency of each image data based on a projection time when each image is projected by the projection unit.

  The storage control unit may register path information of each image data stored in the storage unit in a predetermined image list, and read each image data based on the path information registered in the image list.

  The storage unit may be provided in a computer that performs image processing on the image data output from the camera and outputs the processed image data to the projection unit.

  The storage unit may be provided in the projection unit.

  The storage unit may be provided in the camera.

  According to the present invention, it is possible to easily reproject an image of a subject once photographed.

Hereinafter, a captured image projection apparatus according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows the configuration of a captured image projection apparatus according to this embodiment.
The captured image projection apparatus includes a projector 1, a computer 2, and a document camera 3.

  The projector 1 and the computer 2 are connected via an RGB cable 4. The computer 2 and the document camera 3 are connected via a USB cable 5.

  The projector 1 is supplied with image data corresponding to the document material A as a subject, and projects an image based on the supplied image data on the screen S. The projector 1 includes a projection unit 1a on the front surface of the main body. The projection unit 1a accommodates an optical system such as a projection lens, and the projector 1 irradiates the screen S with light of a document or an image via the projection unit 1a.

  A computer 2 shown in FIG. 1 is configured by a notebook personal computer, for example, and executes various programs. Further, when the document camera function is selected by the user, the computer 2 acquires the image data of the document material A photographed by the camera 3a of the document camera 3, performs image processing, etc., and performs image processing and the like. Is supplied to the projector 1.

  As shown in FIG. 2, the computer 2 includes a camera I / F (interface) 21, an image processing device 22, a storage device 23, a display device 24, an input device 25, a ROM 26, a RAM 27, and a CPU 28. , And is configured.

The camera I / F 21 receives image data and the like from the document camera 3.
The image processing device 22 performs image processing on the image data received by the camera I / F 21. As the image processing, the image processing device 22 converts an image of image data into a rectangle, rotates, and cuts out the image.

  The storage device 23 stores and stores the image data processed by the image processing device 22 and includes a hard disk or the like. This image data is also image data of an image projected by the projector 1 onto the screen S.

  The storage device 23 stores the image information related to the image data as an image file together with the image data. The image information includes the shooting date, shooting time, projection time, exposure condition, image data in the preview (preview) format, and other shooting conditions of the document material A.

  The storage device 23 stores each image file in a database (DB) with a hierarchical structure, and stores an image list in which path information indicating the path of each image data is collected.

  The display device 24 is for displaying an image based on the image data read from the storage device 23 on a monitor, and includes an LCD and a drive circuit thereof.

  A display example of image data displayed on the monitor by the display device 24 is shown in FIG. According to this display example, the display device 24 displays image data in an image confirmation screen area, an image monitor screen area, and an image management area.

  The image confirmation screen area is an area for confirming a designated image. The monitor screen area is an area for monitoring and displaying the image of the document material A being photographed by the camera 3a. The image management area is an area for displaying an image of the image data stored in the storage device 23 in a preview format.

  The input device 25 is for a user to input data, and includes a plurality of keys and a mouse for inputting data (not shown). When the user operates a plurality of keys and mouse of the input device 25, the input device 25 supplies the user operation information to the CPU.

  The ROM 26 stores a program executed by the CPU 28 and the like. The RAM 27 is a working memory that stores data necessary for the CPU 28 to execute the program.

  The CPU 28 controls each part of the computer 2, the document camera 3, and the projector 1 in accordance with a program stored in the ROM 26.

  Specifically, the CPU 28 receives the image data subjected to the image processing by the image processing device 22 from the image processing device 22, stores the data in the storage device 23, and saves it. Further, the CPU 28 reads out the stored image from the storage device 23 and causes the display device 24 to display the read image data image on the display device 24 in a preview format as shown in FIG.

  When the CPU 28 causes the display device 24 to display a plurality of images on the monitor, the CPU 28 determines the use frequency of each image data based on the projection time when each image is projected by the projector 1 and displays the images in the order of the use frequencies.

  The CPU 28 calculates this projection time based on the difference between the current time and the projection start time. For this reason, the computer 2 includes a clock that measures the current time used by the CPU 28 to calculate the projection time.

  A document camera 3 shown in FIG. 1 is a camera system for photographing a document material A to be projected, and includes a camera 3a, a support column 3b, and a camera base 3c. The camera 3a is a digital camera for photographing the document material A as a subject and outputting image data of the photographed document material A. The column 3b is for attaching the camera 3a. The camera 3a is attached to the upper end portion of the column 3b so as to be rotatable up and down and left and right. The camera base 3c is for supporting the column 3b and for placing a document material A such as a newspaper, a magazine article, a presentation sheet, or a document.

Next, the operation of the captured image projection apparatus according to the first embodiment will be described.
The captured image projection apparatus executes the main process of the document camera function according to the flowchart shown in FIG.

  That is, the camera 3a captures a document material A such as a document placed on the camera base 3c (step S11).

The image processing device 22 receives the image data of the document material A taken from the document camera 3 via the camera I / F 21 (step S12).
The image processing device 22 performs distortion correction on the received image data (step S13).

The image processing device 22 performs rotation processing on the image data on which distortion correction has been performed (step S14).
The image processing device 22 performs a cut-out process on the image data that has been subjected to the rotation process (step S15).

  The CPU 28 receives the image data subjected to the image processing from the image processing device 22 and creates preview-format image data (step S16).

  The CPU 28 registers the image data, the image information related to the image data, and the created preview-format image data in the image file (step S17).

The CPU 28 saves the image file in the storage device 23 (step S18).
The CPU 28 sends the stored image data to the display device 24, and causes the display device 24 to display this image (step S19).

  The CPU 28 outputs the image data to the projector 1 (step S20). Then, the CPU 28 controls the projector 1 so that an image based on this image data is displayed on the screen S.

In this way, the document material A photographed by the camera 3a is corrected and displayed on the screen S.
The creation of preview-format image data (step S16) can be performed by appropriately reading stored image data from the storage device 23.

  Further, when the CPU 28 sends image data to the projector 1, the CPU 28 obtains the projection time of the sent image data. This process will be described with reference to the flowchart shown in FIG.

  The CPU 28 determines whether or not the image data instructed to be projected is different from the image data previously sent to the projector 1 (step S31).

  When it is determined that the image data instructed to be projected is the same as the image data previously sent to the projector 1 (No in step S31), the CPU 28 ends this process.

  If it is determined that the image data instructed to be projected is different from the image data previously sent to the projector 1 (Yes in step S31), the CPU 28 obtains the difference between the current time and the projection start time, and calculates the obtained difference. Obtained as the projection time (step S32).

The CPU 28 registers the acquired projection time in the image file in the storage device 23 (step S33).
The CPU 28 records the projection start time (step S34) and ends this process.

  Next, an image file stored in the storage device 23 can be selected and an image of the selected image file can be projected onto the screen S.

This process will be described with reference to the flowchart shown in FIG.
The CPU 28 creates a review list that displays a list of a plurality of preview-format image data registered in the image file in the storage device 23 (step S41).

  The CPU 28 causes the display device 24 to display the created preview list in the shooting order (step S42).

  The CPU 28 determines whether to display images in descending order of use frequency (step S43). When the user operates the input device 25 in order to specify whether or not to display images in order of frequency of use, the input device 25 sends this operation information to the CPU 28. When the CPU 28 receives the operation information, the CPU 28 makes this determination based on the received operation information.

  If it is determined that the images are displayed in order of decreasing usage frequency (Yes in step S43), the CPU 28 causes the display device 24 to display images in the preview format in the order of long projection times obtained according to the flowchart shown in FIG. S44).

  On the other hand, when it is determined that images are not displayed in order of frequency of use (No in step S43), the CPU 28 causes the display device 24 to display the preview list as it is in the shooting order.

  Next, the CPU 28 determines whether or not the user has selected an image from the preview list (step S45). When the user operates the input device 25, the input device 25 sends this operation information to the CPU 28. The CPU 28 makes this determination based on this operation information.

  If it is determined that an image has been selected (Yes in step S45), the CPU 28 outputs the selected image data to the projector 1, and controls the projector 1 so that an image based on this image data is displayed on the screen S. (Step S46). Then, the CPU 28 ends this process.

  On the other hand, if it is determined that no image has been selected (No in step S45), the CPU 28 ends this process as it is.

  Next, the stored images can be switched and displayed. This image switching process will be described based on the flowchart shown in FIG. Note that the CPU 28 clears the image list before performing this processing.

  The CPU 28 registers information on the path up to the stored image data in the image list (step S61).

  The CPU 28 outputs this image data to the display device 24 and displays this image (step S62).

The CPU 28 determines whether or not there is a “display previous” command (step S63).
When the user operates the input device 25, the input device 25 sends this operation information to the CPU 28, and the CPU 28 makes this determination based on this operation information.

  If it is determined that there is a command “display previous” (Yes in step S63), the CPU 28 determines whether or not there is a registered image before the currently displayed image in the image list. (Step S64).

  If it is determined that there is a registered image (Yes in step S64), the CPU 28 acquires, from the image list, path information of image data registered immediately before the currently displayed image (step S65). .

The CPU 28 reads image data based on the acquired path information (step S66).
Then, the CPU 28 outputs the image data to the display device 24, and displays the image on the display device 24 (step S62).

  On the other hand, when it is determined that there is no “display previous” command (No in step S63), or when it is determined that there is no registered image (No in step S64), the CPU 28 displays “next display”. The presence / absence of an instruction is determined (step S67).

  If it is determined that there is an instruction to “display next” (Yes in step S67), the CPU 28 determines whether there is registered image data after the currently displayed image in the image list. (Step S68).

  If it is determined that there is registered image data (Yes in step S68), the CPU 28 acquires, from the image list, path information of the image data registered immediately after the currently displayed image (step S69). .

The CPU 28 reads image data based on the acquired path information (step S70).
Then, the CPU 28 outputs the image data to the display device 24, and displays the image on the display device 24 (step S62).

  On the other hand, when it is determined that there is no “display next” command (No in step S67), or when it is determined that there is no registered image data (No in step S68), the CPU 28 changes the projected image. The presence or absence is determined (step S71).

  If it is determined that the projection image has been changed (Yes in step S71), the CPU 28 executes this image switching process again (steps S61 to S70).

  On the other hand, when it is determined that the projection image has not been changed (No in step S71), the CPU 28 ends the image switching process.

As described above, according to the first embodiment, the image data of the document material A that has been projected once is automatically stored in the storage device 23.
Therefore, the image of the document material A once taken can be easily reprojected. Further, the stored image data can be displayed in the preview format in the order desired by the user, and the target image can be easily selected.

  Further, the projection time projected by the projector 1 is obtained, the usage frequency is determined according to the length of the projection time, and the images are displayed in order of the highest usage frequency, so that an image required by the user can be taken out immediately. it can.

In carrying out the present invention, various forms are conceivable and the present invention is not limited to the above embodiment.
For example, the screen image displayed on the display device 24 shown in FIG. 3 is not limited to this. For example, the image management screen display, the monitor screen display, and the image confirmation screen display may be configured not to be performed at once as shown in FIG. it can.

  In the above embodiment, the projection time for determining the usage frequency is obtained as the difference between the projection start time and the current time. However, in order to obtain the projection time, it is also possible to obtain the total projection time obtained by adding the projection time when newly projected to the projection time stored in the storage device 23. Further, in order to determine the usage frequency, the usage frequency can be determined based on the number of times the document material is replaced instead of the projection time.

  In the above embodiment, the computer 2 is configured to include the storage device 23. However, the storage device 23 may be provided in the projector 1 or the document camera 3. Further, the captured image projection apparatus of the above embodiment is configured to connect the projector 1 and the document camera 3 via the computer 2. However, the configuration of the captured image projection apparatus is not limited to this, and for example, the function (configuration) of the computer 2 of the above-described embodiment is provided in one of the projector 1 and the document camera 3, and the projector 1 And the document camera 3 can be directly connected and the computer 2 can be omitted.

It is a block diagram which shows the structure of the picked-up image projection apparatus which concerns on embodiment of this invention. It is a block diagram which shows the structure of the projector and computer shown in FIG. It is explanatory drawing of the screen display which the display apparatus of the computer shown in FIG. 1 displays. It is a flowchart which shows the main process of the document camera function which the picked-up image projector shown in FIG. 1 performs. It is a flowchart which shows the acquisition process of the projection time which the computer shown in FIG. 1 performs. It is a flowchart which shows the selection process of the preservation | save image file which the computer shown in FIG. 1 performs. It is a flowchart which shows the switching process of the image which a computer performs.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Projector, 2 ... Computer, 3 ... Document camera, 3a ... Camera, 22 ... Image processing apparatus, 23 ... Memory | storage device, 24 ... Display apparatus, 28 ... CPU, S ... screen

Claims (10)

In a captured image projection device that projects an image of a captured subject on a screen,
A camera for photographing the subject and outputting image data of the photographed subject;
A projection unit that projects an image based on the image data output by the camera onto the screen;
A storage unit that stores and stores image data of an image that the projection unit projects onto the screen;
A photographed image projection apparatus characterized by the above. A storage control unit that stores the image data in the storage unit and reads the stored image data from the storage unit;
The photographed image projection apparatus according to claim 1. The storage control unit stores image information related to the image data together with the image data in the storage unit.
The captured image projection apparatus according to claim 2, wherein: The storage control unit stores a preview image as image information related to the image data.
The photographed image projector according to claim 3. A monitor display unit for monitoring and displaying an image based on the image data read from the storage unit;
The storage control unit reads a plurality of image data stored in the storage unit, and causes the display unit to display the read image data on the monitor in order of the frequency of use of each image data.
The photographed image projection apparatus according to claim 2, wherein The storage control unit determines the use frequency of each image data based on a projection time when each image is projected by the projection unit;
The photographed image projecting apparatus according to claim 5. The storage control unit registers the path information of each image data stored in the storage unit in a predetermined image list, and reads each image data based on the path information registered in the image list.
The photographed image projection apparatus according to claim 2, wherein The storage unit is provided in a computer that performs image processing on image data output by the camera and outputs the image data to the projection unit.
The photographed image projecting device according to claim 1, wherein The storage unit is provided in the projection unit.
The photographed image projecting device according to claim 1, wherein The storage unit is provided in the camera.
The photographed image projecting device according to claim 1, wherein

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