KR20130061503A - Image processing device for video recording and using the same methods - Google Patents

Abstract

The present invention relates to an image processing apparatus and a method using the same, which receives an image taken from a left and right camera and takes an image processing according to a predetermined procedure and outputs the image to an image analyzing apparatus for analyzing the left and right images. The processing apparatus includes an image receiver configured to receive a left image photographed from a left camera and a right image photographed from a right camera; A frame extracting unit which extracts the input left image frame and the right image frame at predetermined intervals, respectively; A resolution reduction unit configured to reduce image resolutions of the extracted left image frame and right image frame; And an image output unit configured to alternately output the left image frame and the right image frame having reduced image resolution to the image analyzing apparatus.

Description

IMAGE PROCESSING DEVICE FOR VIDEO RECORDING AND USING THE SAME METHODS}

The present invention relates to an image processing apparatus for stereoscopic imaging and a method using the same. More particularly, the present invention relates to a left and right image by receiving an image captured from a left and right camera and performing image processing according to a predetermined procedure when capturing a stereoscopic video. The present invention relates to an image processing apparatus for outputting an image analyzing apparatus for analyzing the method and a method using the same.

When a person looks at an object, one can feel the perspective distance of the object because the person looks at the object with two eyes separated by a certain distance. The two eyes, with an average of 6.5 centimeters parallax, deliver different images to the brain so that the depth of the object can be recognized by the phase difference between the two images.

For this reason, two cameras are needed to take the role of both eyes for stereoscopic video shooting. Like the human eye, cameras arranged at regular parallax intervals produce images for right and left eyes, respectively. At this time, the viewer can produce a perspective feeling according to the distance and angle of the left and right cameras. The wider the left and right cameras, the more the perspective can be felt, and the position of the convergence point of the angles between the two cameras determines whether the subjects come out of the display plane or back.

However, if two cameras are misplaced, an error in the viewer's perspective perception process may occur, which may cause discomfort such as dizziness. For example, if the left and right cameras have different focus positions (see (a) of FIG. 1), and the viewing angle of one camera is distorted (see (b) of FIG. 1), the left and right cameras are right. Various placement error conditions may occur, such as when the cameras have different placement heights (see (c) of FIG. 1). That is, in a general situation, all other states that can be seen by the human eye may be regarded as an error state.

Therefore, the wrong camera placement must be corrected. There is an empirical way in which the photographer sees and fits the left and right images taken by the two cameras directly, but there is a more advanced method that a specific image processing device detects. . The image processing apparatus may analyze the left and right images of each camera and inform the camera in various ways of any current camera misalignment.

Prior arts have constructed a dedicated image processing device to analyze and process HD-quality images of left and right cameras in real time. Such special-purpose hardware is not only expensive, but also inferior in portability, making it difficult to move at the shooting location.

The present invention was devised to solve the above problems, and when the two cameras for stereoscopic imaging are arranged vertically or horizontally, the portable image processing detects a misalignment between the two cameras and provides stereoscopic photographing guide information. It is an object of the present invention to provide an image processing apparatus and a method using the same for making the system highly portable and easy to use.

To this end, according to the first aspect of the present invention, an image processing apparatus for stereoscopic imaging according to the present invention, the image receiving unit for receiving a left image taken from the left camera and a right image taken from the right camera, respectively; A frame extracting unit extracting the input left image frame and the right image frame at predetermined intervals, respectively; A resolution reduction unit configured to reduce image resolutions of the extracted left image frame and right image frame; And an image output unit configured to alternately output the left image frame and the right image frame having reduced image resolution to the image analyzing apparatus.

According to the present invention, the conventional guide system for correcting the camera positioning error during stereoscopic imaging is composed of dedicated hardware, compared to the heavy and inconvenient to use the simple analysis software and processing the image to utilize the notebook, This increases the portability of the system.

1 is a diagram illustrating an example of an incorrect camera arrangement.
2 is a diagram illustrating a portable image processing system for providing stereoscopic imaging guide information according to an exemplary embodiment of the present invention.
3 is a diagram schematically illustrating a configuration of an image processing apparatus according to an embodiment of the present invention.
4 is a flowchart illustrating an image processing method of an image processing apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Prior to the detailed description of the present invention, the same components will be denoted by the same reference numerals even if they are displayed on different drawings, and the detailed description will be omitted when it is determined that the well-known configuration may obscure the gist of the present invention. do.

2 is a diagram illustrating a portable image processing system for providing stereoscopic imaging guide information according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the portable image processing system for providing stereoscopic photographing guide information according to an embodiment of the present invention includes cameras 10 and 20 installed on left and right sides, and left and right images from the cameras 10 and 20. The image processing apparatus 100 for receiving an input, and the image analysis apparatus 200 for analyzing the left and right phase difference of the image received from the image processing apparatus 100 and detects a camera arrangement error.

The image processing apparatus 100 converts the captured images received from the cameras installed on the left and right sides into a format suitable for analysis by the image analysis apparatus 200 and transmits them to the image analysis apparatus 200.

The image analyzing apparatus 200 analyzes the left and right phase differences of the image received from the image processing apparatus 100 and detects a camera arrangement error to provide stereoscopic photographing guide information.

The stereoscopic guide information that can be provided using the analysis result is, for example, camera placement error analysis and guide information through phase difference analysis of left and right images, color error analysis guide information through color and brightness analysis of left and right images, and left and right image previews. And providing an image display for error analysis, and providing guide information for analyzing and directing 3D image depth.

The image analysis device 200 is preferably a portable computer in consideration of portability.

3 is a diagram schematically illustrating a configuration of an image processing apparatus 100 according to an embodiment of the present invention.

As shown in FIG. 3, the image processing apparatus 100 receives a left and right image from cameras 10 and 20 respectively installed on the left and right sides, and then processes a simple image processing process. In order to optimize and configure the device 200 for an analysis purpose, the apparatus 200 includes an image receiver 110, a frame extractor 120, a resolution reduction unit 130, and an image output unit 140.

In this case, the image receiving unit 110 supports an input port for receiving the left and right images from the camera. For example, the input port may be two types of input ports such as HD-SDI and HDMI. The format for the HD-SDI port is mainly used as a broadcast and movie camera video format, and the format for the HDMI port is a home or semi-professional camera. Used in video format.

When a laptop, which is a general portable computer, is used in the image analyzing apparatus 200, a general HD-quality high quality image may have a large capacity and thus may be difficult to process an analysis with a general portable personal computer.

To this end, the resolution reduction unit 130 performs a function of reducing the resolution of the captured image. Even if the resolution is reduced, the quality of the analysis result of analyzing the camera placement error by analyzing the left and right phase difference of the image does not significantly affect.

The image output unit 140 serves to output an image having a reduced capacity by reducing the resolution to the image analyzing apparatus 200.

The image output unit 140 preferably combines the left and right images having reduced resolution and outputs them in a USB type. Since the image analysis apparatus 200 equipped with the analysis software supports one or more USB ports, when outputting two HD-quality images as one USB stream, regardless of the number of USB ports of the image analysis apparatus 200, This is because there is an advantage to be available.

The image output unit 140 uses a method of alternately outputting left and right images as a method for tying the left image and the right image together so as not to lose the original information. At this time, there is a load to send 60 frames per second to send 30 frames per second.

Therefore, it is preferable to include a frame extractor 120 for extracting frames, for example, even-numbered frames, before the image output unit 140, and to reduce data capacity to be processed when the resolution is reduced. It is more preferable to install before the resolution reduction unit 130.

When only the even-numbered frames are extracted, it is preferable to reduce the resolution of the extracted frames, and then transfer only the left and right images of the even frames to the output image alternately, thereby reducing the processing capacity by half. This does not significantly affect the quality of the analysis results.

4 is a flowchart illustrating an image processing method of an image processing apparatus according to an embodiment of the present invention.

Referring to FIG. 4, the image processing apparatus 100 converts the images received from the camera 10 installed on the left side and the camera 20 installed on the right side into a format suitable for analysis by the image analysis apparatus 200, thereby performing an image analysis apparatus. A method of delivering to 200 will be described.

First, the camera 10 installed on the left side and the camera 20 installed on the right side receives the image (S110).

The received left image frame and the right image frame are extracted at predetermined intervals, respectively. For example, an even frame of the left image and an even frame of the right image are respectively extracted (S120).

The image resolution of each extracted image frame is reduced (S130).

The left and right image frames of which the image resolution is reduced are alternately output to the image analyzing apparatus 200 (S140).

Since the image analysis device 200 may be a general portable personal computer equipped with an analysis program, using the left and right image frames received from the image processing device 100 to analyze the phase difference between the left and right images and to detect the camera arrangement error Provide stereoscopic photographing guide information to the user according to the result.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

Since it is possible to designate an image processing apparatus and an analysis software platform as a notebook without using dedicated hardware, the portability is high, and further function upgrades can be conveniently performed, and thus can be utilized in a stereoscopic shooting scene.

10 camera
20 cameras
100 image processing unit
200 video analysis device

Claims (1)

An image receiver configured to receive a left image photographed from the left camera and a right image photographed from the right camera;
A frame extracting unit which extracts the input left image frame and the right image frame at predetermined intervals, respectively;
A resolution reduction unit configured to reduce image resolutions of the extracted left image frame and right image frame; And
An image output unit which alternately outputs the left image frame and the right image frame having reduced image resolution to the image analyzing apparatus.
Image processing apparatus for stereoscopic photographing comprising a.

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