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image processing method

An image processing and image technology, applied in the field of image processing, can solve the problems of high equipment price, increased use cost, poor performance of pure color images, etc., and achieve the effect of easy hardware implementation platform, low bandwidth and low cost

Active Publication Date: 2020-08-04
广东魅视科技股份有限公司
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  • Claims
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Problems solved by technology

[0005] In the implementation, the YCbCr 4:2:0 format image codec restores the color, especially the red (Cr) and blue (Cb) pure color images that are extracted are very poor, so the YCbCr 4:4:4 format Images in YCbCr 4:2:0 format have higher display resolution, and images in YCbCr 4:4:4 format have a better display effect, but the equipment used to encode and decode YCbCr 4:4:4 images is expensive, which increases the use of cost

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Such as figure 1 It is a flowchart of an image processing method according to an embodiment of the present invention. The method mainly includes the following steps:

[0023] S1. Input the original YCbCr4:4:4 format image into the codec;

[0024] S2. Decompose the original YCbCr4:4:4 format image into YCbCr4:2:0 format image and CbCr parameter image;

[0025] S3. Encoding and decoding the YCbCr4:2:0 format image and the CbCr parameter image t...

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Abstract

The invention discloses an image processing method. The method comprises the following steps: S1, inputting an original YCbCr4: 4: 4 format image into a codec; s2, decomposing the original YCbCr4: 4:4 format image into a YCbCr4: 2: 0 format image and a CbCr parameter image; s3, performing H.265 encoding and decoding on the image in the YCbCr4: 2: 0 format and the CbCr parameter image; and S4, outputting the H.265 decoded image to a display device in a final YCbCr4: 4: 4 format image. According to the method, the cheap YCbCr 4: 2: 0 format image codec is used for synthesizing the image with the chroma expression capability of the YCbCr 4: 4: 4 format image codec, so that the image display definition is high, the display effect is good, the cost is low, the bandwidth is relatively low, anda hardware implementation platform is easy to find.

Description

Technical field [0001] The present invention relates to image processing. In particular, it relates to an image processing method. Background technique [0002] YCbCr is a kind of color space, which is usually used for continuous image processing in movies or in digital photography systems. YCbCr where Y refers to the luminance component, Cb refers to the blue chrominance component, and Cr refers to the red chrominance component. The human eye is more sensitive to the Y component of the video, so after sub-sampling the chrominance component to reduce the chrominance component, the naked eye will not notice the change in image quality. [0003] The main sub-sampling formats are YCbCr 4:2:0, YCbCr 4:2:2 and YCbCr 4:4:4. 4:2:0 means that every 4 pixels have 4 luminance components and 2 chrominance components (YYYYCbCr ), only sampling odd scan lines, it is the most commonly used format for portable video equipment (MPEG-4) and video conferencing (H.263); 4:2:2 means that every 4 pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/42H04N19/70H04N19/186H04N9/64
CPCH04N9/64H04N19/186H04N19/42H04N19/70
Inventor 方华
Owner 广东魅视科技股份有限公司