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3D video format identification method and system

A technology of video format and recognition method, which is applied in the field of image processing to achieve high-precision results

Active Publication Date: 2018-07-10
FUJIAN TIANQUAN EDUCATION TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only recognize common image formats. For symmetrical or similar images, it is easy to misidentify; method, the recognition result of the picture is a 3D picture, which is inconsistent with the fact that the picture is a 2D picture

Method used

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  • 3D video format identification method and system
  • 3D video format identification method and system

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Embodiment 1

[0099] Please refer to image 3 as well as Figure 4 , Embodiment 1 of the present invention is:

[0100] A 3D video format identification method, comprising:

[0101] Get a frame of image in the video;

[0102] performing second-order splitting on the image to obtain 4 partitions;

[0103] Corresponding to each partition, calculate the feature difference between it and the left and right adjacent partitions and the upper and lower adjacent partitions; specifically, such as Figure 4 As shown, obtain the sum of the pixel values ​​of each partition; calculate the absolute difference of the sum of the pixel values ​​of a partition and its left and right adjacent partitions, and record it as the first absolute difference; calculate the pixel values ​​of the one partition and its upper and lower adjacent partitions The absolute difference of the sum is recorded as the second absolute difference; calculate the sum of the first absolute difference and the second absolute differe...

Embodiment 2

[0108] Please refer to Figure 5 as well as Figure 6 , the second embodiment of the present invention is:

[0109] A method for identifying a 3D video format, which differs from the first embodiment above in that:

[0110] If it is determined that the video is a 3D video in a left-right format, then calculate the absolute difference of the sum of the pixel values ​​of the two subregions adjacent to each other in the image;

[0111] calculating the sum of said pixel value sums of said two partitions;

[0112] calculating the ratio of said absolute difference to said sum of pixel values;

[0113] If the ratio of the absolute difference corresponding to the sum of the pixel values ​​to the sum of the pixel values ​​corresponding to two subregions adjacent up and down in the image is smaller than a preset threshold, then it is determined that the image is a 3D image in a left-right format, and the video is 3D video, otherwise it is determined that the video is not a 3D video; ...

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Abstract

The invention provides a 3D video format identification method and system. The method comprises the following steps of: obtaining a one-frame frame in a video; performing second-order splitting of the image so as to obtain four partitions; respectively calculating characteristic differences between various partitions and transverse adjacent partitions, and between various partitions and vertical adjacent partitions; respectively comparing the characteristic differences corresponding to various partitions with a pre-set threshold value, judging that the partitions are in the transverse format if the characteristic differences of the partitions corresponding to the transverse adjacent partitions are less than the pre-set threshold value, and judging that the partitions are in the vertical format if the characteristic differences of the partitions corresponding to the vertical adjacent partitions are less than the pre-set threshold value; judging whether formats of various partitions are same or not, and are the vertical format or the transverse format; and if so, judging that the image is in the 3D format. Second-order splitting of the one-frame image in the video is carried out; the formats of various partitions are judged; only when the formats of various partitions are same and are in the 3D format, the fact that the image is in the 3D format can be judged; and thus, the identification precision is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a 3D video format identification method and system. Background technique [0002] Common 3D film source transmission formats mainly include the following six types: 1. Frame sequence format (frame sequence): Continuously send images, such as 60Hz movies, alternately send left and right eye images at a speed of 120Hz, and display them alternately, sequentially for Left / right eye reception; 2. Interlaced format: arrange the left and right eye images vertically in rows; 3. Interleaved column format: arrange the left and right eye images horizontally in columns; 4. Checkerboard Format (checkerboard): In the checkerboard 3D format, the left-eye and right-eye images are interleaved, that is, the left-eye or right-eye images are stored every other pixel, which is very similar to the squares of a chess board, so it is called checkerboard ;5, left-right format (side-by-s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N13/139H04N13/388
CPCH04N13/139H04N13/388
Inventor 刘德建曾兴强郭玉湖陈宏展
Owner FUJIAN TIANQUAN EDUCATION TECH LTD
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