KR20210132499A - Apparatus and method for producing a stereoscopic image that is easy to shoot and edit images - Google Patents

Abstract

The present invention relates to an apparatus and method for producing a stereoscopic image that is easy to shoot and edit images, and more particularly, to an apparatus and method for producing a stereoscopic image that is easy to shoot and edit realistic stereoscopic images using a camera. The present invention includes a camera; a stage capable of linearly moving the camera; a synchronization signal control part for controlling shooting of the camera and driving of the stage; and a stereoscopic image generation part for controlling the camera and the stage through the synchronization signal control part according to input shooting information, and receiving an image from the camera to generate a stereoscopic image.

Description

Apparatus and method for producing a stereoscopic image that is easy to shoot and edit images}

The present invention relates to a three-dimensional image production apparatus and method for easy image shooting and editing, and more particularly, to a three-dimensional image production apparatus and method for facilitating shooting and editing of a live-action stereoscopic image using a camera. will be.

In order to enjoy a stereoscopic image on a stereoscopic display device, a system capable of producing a stereoscopic image is required.

Currently, various production methods are widely used for stereoscopic image graphic processing using a computer, but the actual stereoscopic image production method is difficult for general users to use.

This is because the view (view) method of the stereoscopic (3D) display is diverse, and the number of cameras individually corresponding to the methods, the control method, etc. are very difficult for general users to handle.

That is, in the computer graphic method, it is easily implemented in software so that general users can use it conveniently, so that correction and editing are convenient, but there are many limitations in the production of live-action stereoscopic images.

Looking at the conventional live-action stereoscopic image shooting method, as in Figs. 1 and 2, a shooting method using two cameras (Two-camera) (Fig. 1) and a single-camera shooting method (Fig. 2) ) is an example.

In the method using two cameras, as shown in FIG. 1 , the left image and the right image are taken with respect to the subject 2 while constantly adjusting the distance between the two lenses of the camera 1 , and the It is a method of producing a stereoscopic image that can be viewed on a three-dimensional display using a computer.

On the other hand, in the method using a single camera (single-camera), as shown in FIG. 2 , the left image of the subject 2 is first photographed with a single camera 1 , and then the camera 1 is moved at regular intervals. This is a method of photographing the right image of the subject 2 .

These methods may not feel very uncomfortable in a stereoscopic 3D display method using two images on the left and right.

However, in order to produce a three-dimensional image suitable for a three-dimensional display using a plurality of parallel images, it is inconvenient for general users to connect multiple cameras or move one camera to shoot, and the editing process after shooting is inconvenient for general users. The downside is that you have to go through the process.

That is, in order to obtain a stereoscopic image of an appropriate depth in the conventional method, a problem of trial and error occurs. In addition, in the stereoscopic 3D display method that does not require glasses, multiple views are often used, and since there are various methods for generating a stereoscopic image after shooting, it can respond to most of these systems and can be easily used by ordinary users. The need for a production system emerges.

The technical problem of the present invention is to solve the above problems, so that general users can easily and conveniently work in the process of producing a stereoscopic image through the process of photographing, image editing, and stereoscopic image generation by a camera. An object of the present invention is to provide a stereoscopic image production apparatus and production method.

In order to achieve the object of the present invention as described above, the present invention, a camera; a stage capable of linearly moving the camera;

a synchronization signal control unit controlling the photographing of the camera and driving of the stage; This is achieved by including a stereoscopic image generator for controlling the camera and the stage through a synchronization signal controller according to input shooting information, and receiving an image from the camera to generate a stereoscopic image.

As another aspect for achieving the object of the present invention, the present invention provides a method for producing a stereoscopic image, the method comprising: receiving photographing information and calculating a camera movement amount; repeating photographing by moving the camera by the calculated amount; This is achieved by constructing a stereoscopic image using the photographed images.

The present invention as described above occurs in producing a stereoscopic image having an appropriate depth after photographing while changing the amount of camera movement in order to control the amount of depth in the conventional photographing method in shooting a live-action stereoscopic image. This has the effect of minimizing the problem of the image, and it is possible to easily produce a stereoscopic image having a desired depth using only the information between the subject and the camera to give a stereoscopic effect in an actual shooting situation. This has the effect of being able to easily produce a stereoscopic image and enjoy it on a 3D display even for a general user class, even if you are not a stereoscopic image production expert. And since a stereoscopic image advertising company can produce a live-action stereoscopic advertising image in a short time, the effect is also great in terms of cost.

1 is a schematic diagram showing an example of a conventional live-action stereoscopic image shooting method.
2 is a schematic diagram showing another example of a conventional live-action stereoscopic image shooting method.
3 is a block diagram illustrating an embodiment of a stereoscopic image production apparatus of the present invention.
4 is a schematic diagram showing a state of photographing using the stereoscopic image production apparatus of the present invention.
5 is a schematic diagram illustrating image shift of the stereoscopic image production apparatus of the present invention.
6 is a schematic diagram illustrating image processing using the stereoscopic image production apparatus of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 3, the overall configuration of the present invention is a synchronization signal control unit 30 that simultaneously controls a camera 10 and a stage 20 that allows the camera 10 to be linearly transferred. ) and a stereoscopic image generating unit 40 that controls the entire system of this configuration.

As shown in FIG. 3 , the stereoscopic image generating unit 40 may be stored in a computer such as a personal computer (PC) and driven.

The stage 20 on which the camera 10 is mounted is driven by a motor, and the camera 10 can be transported along the guide groove 21 .

This stage 20 is a device capable of moving the mounted camera 10 by a certain distance by driving the synchronization signal control unit 30, and the stereoscopic image generating unit 40 or the stereoscopic image generating unit 40 is It can be controlled by the included computer and can be mounted on a general camera tripod.

In this way, the synchronization signal control unit 30 is controlled from the stereoscopic image generation unit 40 or the computer, and drives the camera 10 using a shutter or an iris of the camera 10 and drives the stage 20 . to control Accordingly, the synchronization signal control unit 30 may be divided into a camera shutter control unit 31 and a stage motor control unit 32 .

In addition, the stereoscopic image generation unit 40 includes a photographing control unit 41 for controlling photographing of the camera 10 , a movement control unit 42 for setting a movement amount of the camera 10 , and the captured image It may be configured in detail with the image processing unit 43 for processing.

As described above, the image captured by the driving of the stereoscopic image generator 40 is transmitted to the stereoscopic image generator 40 .

When explaining the overall control flow in the present invention having such a configuration, as shown in FIGS. 3 and 4 , when the user inputs shooting information to the stereoscopic image generator 40 , the movement of the stereoscopic image generator 40 is The control unit 42 calculates the movement amount of the camera 10 and controls the camera 10 and the stage 20 through the synchronization signal control unit 30 .

At this time, the shooting information that can be input by the user includes the number of images to be taken, the focal length of the lens of the camera 10 in the shooting situation, the distance between the depth zero point (A) and the lens of the camera 10, and the depth zero point (A) ) from the lens of the camera 10 to the closest subject 50 may be there. Here, the depth zero point (A) refers to a surface on which the subject 50 is located on the virtual screen surface (depth zero).

That is, the camera 10 is moved by driving the stage 20 by the amount of movement calculated above under the control of the stereoscopic image generating unit 40, and at the same time as the movement of the camera 10 is finished, the shooting control unit 41 to drive the camera 10 to capture an image of the subject 50 .

Such a photographing process may be repeated according to the number of images to be photographed.

After the photographing is finished, the image processing unit 43 of the stereoscopic image generator 40 receives the photographed images from the camera 10 and finally generates a live-action stereoscopic image through an image processing process.

The calculation of the movement amount (S) of the camera 10 is, as shown in FIG. 4 , the distance (D) from the lens of the camera 10 to the depth zero point (A) in the actual shooting situation, the virtual screen surface (depth zero) The horizontal size (w') of the camera 10, the focal length (f) of the lens of the camera 10, the screen disparity that determines the depth amount (screen disparity: ds), the horizontal size (wf) of the sensor of the camera 10 ), is calculated as in Equation 2 from Equation 1 below using the horizontal size (w) value of a three-dimensional display (3ddisplay).

In performing image processing using the image obtained through this process, the depth zero point (A) is matched from the leftmost image and the rightmost image of each of the photographed images to the image closest to the center image. Each image is shifted (see FIG. 6) to

At this time, the shifting amount (Q) is the size (L) of the image sensor, the distance (D) from the lens 11 to the depth zero point (A) of the camera 10, and the focus of the camera 10, as shown in FIG. 5 . The distance (f) and the image deviation value (g) from the central axis of the image sensor 12 of the camera 10 are obtained using the distance S between the cameras 10 through Equation 3 below.

Therefore, in the final image processing process, as shown in FIG. 6 , the depth zero point (A) is matched by shifting the n images taken by the shift amount (Q) calculated based on the central image (51). The three-dimensional image 60 having a desired depth is finally generated by multiplexing the three-dimensional image generation method of each three-dimensional display (3D display).

That is, for each left image 52 of the photographed image, the shift amount Q calculated for the left image 52 to match the depth zero point (A) up to the image closest to the center image 51 ) to shift the image.

Similarly, for each right image 53 of the photographed image, the shift amount Q calculated for that right image 53 to match the depth zero point (A) up to the image closest to the center image 51 . Shifts the image by that amount.

Image processing is performed on the n images taken as described above to finally generate a stereoscopic image 60 corresponding to each shooting condition.

That is, using the present invention as described above, if a general user inputs only shooting information in an actual shooting situation, the stereoscopic image generating unit 40 and the computer can be used to conveniently produce a live-action stereoscopic image on a three-dimensional display of various types. The camera 10 movement amount and shift amount are calculated immediately, and image processing is performed as a stereoscopic image.

Therefore, it is possible to work collectively, minimizing trial and error, from moving the camera 10 to generating a stereoscopic image of the captured image by automatic control of the stereoscopic image generating unit 40 .

The above embodiment is an example for explaining the technical idea of the present invention in detail, the present invention is not limited to the above embodiment, various types of modifications are possible, and various embodiments of these technical ideas are all protected by the present invention It goes without saying that it is within the scope.

10: camera 20: stage
30: synchronization signal control unit 40: stereoscopic image generation unit
50: subject 60: stereoscopic image

Claims (15)

camera and;
a stage capable of linearly moving the camera;
a synchronization signal control unit controlling the photographing of the camera and driving of the stage;
and a stereoscopic image generator for controlling the camera and the stage through a synchronization signal controller according to input shooting information, and receiving an image from the camera to generate a stereoscopic image. The apparatus of claim 1, wherein the stage is driven by a motor. The method of claim 2, wherein the synchronization signal control unit,
the camera shutter control unit;
and the stage motor control unit. According to claim 1, wherein the stereoscopic image generator,
a photographing control unit for controlling photographing of the camera;
a movement control unit for setting a movement amount of the camera;
and an image processing unit for processing the photographed image. The method of claim 1, wherein the input shooting information comprises at least one of the number of images to be captured, a focal length of the camera lens, a distance between a depth zero point and a camera lens, and a distance from the camera lens to the nearest subject at the depth zero point. Stereoscopic image production apparatus, characterized in that. The stereoscopic image according to claim 5, wherein the stereoscopic image generator sets the amount of movement of the camera by the stage based on the input shooting information, and controls the movement of the camera through the synchronization signal controller. production device. [Claim 7] The apparatus of claim 6, wherein the stereoscopic image generating unit repeatedly captures an image by driving the camera when the camera completes movement. The stereoscopic image production apparatus according to claim 6, wherein the movement amount (S) of the camera is calculated by the following equation.

,
D: distance from camera lens to depth zero point,
F: distance from the depth zerp plane to the end of the object,
w': the horizontal size of the virtual screen plane,
d _s : screen disparity,
w: The horizontal size of the screen. The stereoscopic image production apparatus according to claim 1, wherein the stereoscopic image generating unit is included in a personal computer (PC). The stereoscopic image production apparatus according to claim 1, wherein the stereoscopic image generator shifts each of the received images around a central image, and multiplexes each image so that the depth zero point matches. 11. The apparatus of claim 10, wherein the shift amount (Q) is calculated by the following equation.

,
g: the deviation from the sensor center of the camera,
L: The size of the camera's sensor. The apparatus of claim 1, wherein the camera is a digital camera. In the method of producing a stereoscopic image using the apparatus of claim 1,
receiving photographing information and calculating a camera movement amount;
repeating photographing by moving the camera by the calculated amount;
and generating a stereoscopic image by using the captured images. The method of claim 13, wherein the generating of the stereoscopic image comprises:
calculating a shift amount from the center of each photographed image;
shifting each image about a central image by the calculated amount;
and multiplexing the shifted image by matching the depth zero point. The method of claim 13, wherein the photographing information is at least one of the number of images to be photographed, the focal length of the camera lens, the distance between the depth zero point and the camera lens, and the distance from the camera lens to the closest object at the depth zero point. A three-dimensional image production method.

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