JPH0666970B2 - 3D printing device - Google Patents

Description

The present invention relates to a stereoscopic printing apparatus that creates a stereo pair from stereoscopic video signals.

<Prior Art> Conventionally, a stereoscopic printing apparatus of this type receives a stereoscopic video signal from a recording / reproducing apparatus such as a VTR, and freezes the screen by using a function of the recording / reproducing apparatus such as pause and frame advance. However, there is one that prints the still image and creates a stereo pair.

By the way, a stereo pair is used for stereoscopic viewing of a stereoscopic image. As shown in FIG. 8, left-eye and right-eye photographs, pictures, etc. are arranged horizontally to the left and right respectively. It is a thing.

To stereoscopically view this stereo pair, hold the stereo pair horizontally with your hands about 25 cm in front of your eyes, relax your eyes as if you are looking at a distance, and use the left eye to draw the left picture and the right eye to the right picture. When you look at the picture, the left and right images come closer to each other and you can see them in stereo. This is called naked-eye stereoscopic vision. Also, stereoscopic viewing can be easily performed by using a stereoscopic mirror.

In this way, the stereo pair can be easily viewed stereoscopically without the need for tools, so it is used in a wide range of fields such as presentations at academic conferences, creation of topographic maps, and medical fields.

<Problem to be Solved by the Invention> By the way, as a video signal for creating this stereo pair, a stereoscopic video signal in which one frame is composed of a field of a video for the left eye and a field of a video for the right eye is used. However, since the conventional stereoscopic printing device is designed to print a still image, a recording / playback device having a field still function for alternately displaying a left image field and a right image field in a still state is provided. Was needed. In addition, there is a drawback that it is difficult to distinguish whether the paused image is a left image or a right image, and the left and right images can only be discriminated by the operator.

Therefore, an object of the present invention is to provide a stereoscopic printing apparatus that does not require an operator to distinguish between left and right images and does not require a recording / playback apparatus having a field stillness function.

<Means for Solving the Problems> In order to achieve the above object, according to the present invention, one frame receives a stereoscopic video signal including a left eye image field and a right eye image field, In a stereoscopic printing apparatus in which an image for the eye and the image for the right eye are separately printed by a printer, a frame counting means for counting frames of the stereoscopic image signal, and a field of the stereoscopic image signal for the left eye Field determining means for determining whether the field is for the right eye or a field for the right eye, and a plurality of frame areas including a left eye field area for storing the left eye field and a right eye field area for storing the right eye field. Field memory with
In response to the output from the frame counting means and the output from the field determining means, the stereoscopic video signal is sequentially stored for each frame in a left eye field area and a right eye field area of a predetermined frame area of the field memory. Video signal storage means, and when printing a pair of left and right video, specify the frame of the video to be printed in frame units, and when printing consecutive video, select the first frame and the last frame of the printing area. When printing a pair of left and right images on the basis of the print image designating means for designating on a frame-by-frame basis and the signals from the print image designating means, the video signal of the frame of the designated video is read from the field memory. When outputting to the above printer and printing continuous video, specify the specified area. Of the first frame to the last frame of the video signal are sequentially read from the field memory on a frame-by-frame basis and output to the printer, and an area that specifies an enlarged area of the image to be output to the printer. It is characterized in that it comprises a designating means and a video enlarging means for enlarging the image of the area designated by the area designating means to a predetermined size and outputting the image to the printer.

Further, the present invention comprises area designating means for designating a non-printing area of the image output to the printer, and trimming means for outputting to the printer an image excluding the image of the area designated by the area designating means. Can be provided.

<Operation> The frame counting means counts the frames of the stereoscopic video signal in which one frame is composed of the field of the video for the left eye and the field of the video for the right eye, and whether the field of the stereoscopic video signal is the field for the left eye. The field determination means determines whether the field is for the right eye. The video signal storage means outputs the output from the frame counting means,
In response to the output from the field determination means, the video signal is sequentially stored for each frame in the left eye field area and the right eye field area of a predetermined frame area of the field memory. On the other hand, when the pair of left and right images is printed, the print image designating unit designates the frames of the image to be printed on a frame-by-frame basis, and when printing consecutive images, the first frame and the last frame of the area to be printed. Is specified in frame units. Then, when the control means prints a pair of left and right images on the basis of the signal from the print image designating means, the image signals of the frames of the designated images are read out from the field memory at the same time as the left and right sides or separately. When outputting continuous video to the above printer, the video signals of the frames from the first frame to the last frame of the specified area are sequentially read from the field memory in frame units and output to the printer. Or, of the video signal of the frame of the specified area,
After the video signal of one of the left and right fields is sequentially read from the field memory and output to the printer, the video signal of the other of the left and right fields is sequentially read from the field memory and output to the printer. Further, the area designating means designates an area to be enlarged in the image output to the printer, and the image enlarging means enlarges the image of the area designated by the area designating means to a predetermined size and causes the printer to enlarge. Output.

When the trimming means is provided, the area designating means designates a non-printing area in the image to be output to the printer, and the trimming means designates an image excluding the image in the area designated by the area designating means. Output to printer.

Therefore, it is not necessary for the operator to determine the left and right images by keeping the field still, and anyone can easily make a stereo pair for each specified image without making a mistake on the left and right, and also for the images in the specified range. You can make consecutive stereo pairs. Further, it is possible to create a stereo pair in which a desired region is enlarged or a stereo pair in which a desired portion is emphasized.

<Example> Hereinafter, the present invention will be described in detail with reference to illustrated examples.

FIG. 1 is a block diagram showing the circuit configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 1 is a VTR for recording / reproducing a stereoscopic video signal in which one frame is composed of a left eye video field and a right eye video field, and 2 is a stereoscopic video signal. It is a monitor that displays the video. Further, 3 is a frame counting circuit for counting the frames of the stereoscopic video signal output from the VTR 1 and 4
Is a field determination circuit for determining whether the video of the stereoscopic video signal is a video for the left eye or a video for the right eye, 5 is an A / D converter for converting the stereoscopic video signal into a digital signal, 6 Is a field memory having a plurality of frame areas including a left-eye field area for storing a left-eye field of the stereoscopic video signal converted into the digital signal and a right-eye field area for storing a right-eye field. Is. Further, 7 is a control unit and 8 is an operation unit. The control unit 7 is composed of a CPU 71, a program ROM 72 and a work RAM 73. The control unit 7 controls the VTR 1 in response to an instruction from the operation unit 8 and also outputs information from the frame count circuit 3 and the field determination circuit 4. In addition, the writing / reading control is performed for each frame for the left eye and each field for the right eye of the field memory 6. Further, 9 is a D / A converter, 10 is a printer interface, and 11 is a printer.

FIG. 2 is a diagram showing an example of a stereoscopic video signal input to the field memory 6, a state in which the stereoscopic video signal is stored in the field memory 6, and an example of the stereoscopic video signal output from the field memory 6. .

The operation of the three-dimensional printing apparatus according to this embodiment will be described below.

First, the operation unit 8 inputs an instruction to create only one stereo pair or to create a stereo pair of consecutive scenes. Then, VT the videotape containing the stereoscopic video signal including the scene where you want to create a stereo pair.
Play on R1 and watch on monitor 2. The video signal output from the VTR 1 is A / D converted by the A / D converter 5,
As shown in FIG. 2, all the data from memory-1 to memory-n are recorded in the left and right field memories 6. The contents recorded in the field memory 6 are D /
The frame is displayed and confirmed on the monitor 2 via the A converter 8. Next, after stopping the VTR, the following operation is performed in accordance with the instruction input from the operation unit 8.

When creating one set of stereo pairs When the changeover switch of the field memory 6 is operated from the operation unit 8 to call up and specify a scene for which a stereo pair is to be created, the information indicating the frame of the scene is displayed in the work R.
It is stored in AM73. Then, the control unit 7 reads out the frame of the called scene from the field memory 6 based on the above information and outputs it to the printer 11 via the D / A converter 9 or the printer interface 10 for simultaneous left and right or Print out left and right separately.

Similar to the case of creating a stereo pair of continuous scenes, if you operate the changeover switch of the field memory 6 from the operation unit 8 and specify the start and end of continuous scenes while checking on the monitor 2, the start and end frames are specified. And stored in the work RAM 73. And CP
The U71 sequentially reads the frames from the first frame to the last frame from the field memory separately for the left-eye field and the right-eye field, and the D / A converter 9
Alternatively, it outputs to the printer 11 via the printer interface 10. Then, as shown in FIG. 2, the screens in the designated range are sequentially printed out at the same time on the left and right, or only the left screen is sequentially printed out, and then only the right screen is sequentially printed out. By setting the printout order on the operation unit 8, the right screen can be set first.

When a video is input from the VTR 1 to the field memory 6, if the continuous scenes are long and the field memory 6 cannot be fully filled, the VTR 1 is temporarily stopped and rewound. Then, after the printout is completed, reproduction is performed, the frames next to the last frame captured in the field memory 6 last time are sequentially captured in the field memory 6, and then the printout is performed. Thus, VT
R1 control, image capture to field memory 6,
By repeating the printout to the printer 11, a stereo pair can be created even when a continuous scene is long.

Case of Creating Stereo Pair Using Enlargement Display Function FIG. 3 is a flowchart showing the operation in this case.
As in the case of the above, while operating the changeover switch of the field memory 6 from the operation unit 8 and confirming it on the monitor 2, in the case of, a scene where a stereo pair is to be created,
In the case of, the first scene of the continuous scene is displayed on the monitor 2.
Then, after enlarging the displayed scene, the range to be printed out is specified. FIG. 4 shows a range (A-B-C-D) for normal printout and a portion (E) for enlarged display.
-F-G-H) is shown. In the enlarged display,
The contents of the designated memory are once transferred to the work RAM 73. Then, in the control unit 7, the lateral magnification is a line segment (A-D) / so that the point E becomes the point A, the point F becomes the point B, the point G becomes the point C, and the point H becomes the point D. Calculated by the line segment (E-H), then
The vertical magnification is calculated by line segment (AB) / line segment (EF). A normal print size is obtained by multiplying the horizontal magnification and the vertical magnification by the horizontal and vertical directions of the expansion range. These are stored in the arithmetic program ROM 72. Next, the result of the above calculation is transferred to the memory from which the data is taken out, and the printout is started. When printing is completed, the original data is taken out from the work RAM 73 and transferred to the memory. By doing so, the data can be used as it is even when the next printout is performed in the normal size.

Case of Creating Stereo Pair Using Trimming Function FIG. 5 is a flowchart showing the operation in this case.
As in the case of the above, while operating the changeover switch of the field memory 6 from the operation unit 8 and confirming it on the monitor 2, in the case of, a scene where a stereo pair is to be created,
In the case of, the first scene of the continuous scene is displayed on the monitor 2.
Then, the range to be printed out is specified, and the trimming function is used to print out. FIG. 6 shows the concept of reading data in printout using the trimming function. This is the address in memory replaced with coordinates.The start address is (0,0), the end address is (X, Y), and the actual print start address when using the trimming function is (Xa, Ya) and the end address is (Xb, Yb). Normally, (0,0) to (1,0), (2,0), ...,
Reads data in the (X, 0) and X directions and outputs it to the printer. Next, the Y direction is incremented by 1, and (0,1), (1,0), ..., Similarly,
Data is read in the (X, 1) and X directions, and this is repeated until the final address (X, Y). When the trimming function is used, data up to the print start address (Xa, Ya) is displayed as data that does not display anything on the printer (for example,
The value is replaced with "0" and output to the printer. At this time, the data in the memory does not change. (Xa, Ya) to (Xb, Ya)
The data in the memory is output to the printer as it is, and (X
“0” is output again from b + 1, Ya) to (X, Ya). In this way, the data in the memory is output to the printer as it is only in the necessary places designated by the trimming function, and "0" is output in the other places to create a stereo pair in which the desired portion is emphasized. be able to. An example of a stereo pair using the trimming function is shown in FIG.

As described above, when one frame stores a stereoscopic video signal including a left-eye video field and a right-eye video field in the field memory 6 on a frame-by-frame basis and prints a pair of left and right videos, When the video signals of the frames of the specified video are read from the field memory 6 at the same time on the left and right sides or separately on the left and right sides and output to the printer 11 to print continuous video, from the first frame of the specified area, The frame video signals up to the last frame are sequentially read from the field memory 6 in frame units and output to the printer 11, or the video signal of either the left or right field among the video signals of the frames in the designated area. Are sequentially read from the field memory 6 and output to the printer. Since the video signal of the field is read out sequentially from the field memory 6 and output to the printer, the operator does not need to stop the field to determine the left and right images. However, you can easily create a stereo pair for each specified image, and you can also continuously create a stereo pair of images in the specified range.

<Effects of the Invention> As is apparent from the above, according to the three-dimensional printing apparatus of the present invention, it is not necessary for the operator to stop the field to discriminate the left and right images, and therefore, anyone can easily make a right and left mistake. , A stereo pair can be created for each specified image, and a stereo pair of images in a specified range can be continuously created. In addition, it is possible to print by enlarging a designated area in an image to be printed, or printing only a desired portion.

Further, by using the enlargement display function, it is possible to enlarge the designated area of the screen to be printed to a predetermined size for printing.

Further, by using the trimming function, it is possible to print except the designated area of the screen to be printed, and it is possible to create a stereo pair in which the desired portion is emphasized.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of an embodiment of the present invention, and FIG. 2 is a stereoscopic video signal input to the field memory in the above embodiment and a state in which the stereoscopic video signal is stored in the field memory. And a diagram showing an example of a stereoscopic video signal output from the field memory, FIG. 3 is a flow chart showing the operation when the enlarged display function is used in the above embodiment, and FIG. 4 is a normal display in the above embodiment. FIG. 5 is a diagram showing the relationship of the enlarged display range, FIG. 5 is a flow chart showing the operation when the trimming function is used in the above embodiment, and FIG. 6 is a description of the data read when the trimming function is used in the above embodiment. FIG. 7 is a diagram showing an example of a stereo pair when the trimming function in the above embodiment is used, and FIG. 8 is an example of a normal stereo pair. It illustrates. 1 ... VTR, 2 ... monitor, 3 ... frame counting circuit, 4 ... field determination circuit, 6 ... field memory, 7 ... control section, 8 ... operation section, 11 ... printer.

Claims (2)

[Claims] 1. A printer for receiving a left-eye image and a right-eye image separately by receiving a stereoscopic image signal in which one frame includes a left-eye image field and a right-eye image field. In a three-dimensional printing apparatus configured to perform printing by means of a frame counting means for counting the frames of the three-dimensional video signal, and a field determination means for determining whether the field of the three-dimensional video signal is a left-eye field or a right-eye field. And a field memory having a plurality of frame areas including a left-eye field area for storing a left-eye field and a right-eye field area for storing a right-eye field, and an output from the frame counting means. In response to the output from the field determination means, the stereoscopic video signal is sequentially stored for each frame in the field memory. Video signal storage means for storing in the left eye field area and right eye field area of the constant frame area, and when printing a pair of left and right images, specify the frame of the image to be printed in frame units and When printing, when printing a pair of left and right images based on the print image designating means for designating the first frame and the last frame of the area to be printed in frame units, and the signal from the print image designating means, , When the video signal of the specified video frame is read from the field memory and output to the printer to print continuous video, the video of the frame from the first frame to the last frame of the specified area The signals are sequentially read from the field memory in frame units and output to the printer. Control means, area specifying means for specifying an area to be enlarged in the image to be output to the printer, and image to be output to the printer by expanding the image of the area specified by the area specifying means to a predetermined size. A three-dimensional printing apparatus comprising an enlarging means. 2. The three-dimensional printing apparatus according to claim 1, wherein an area designating unit that designates an area to be printed out of the image output to the printer, and an area designated by the area designating unit. A stereoscopic printing apparatus comprising: a trimming means for outputting an image excluding an image to the printer.