Image encoding/decoding method and apparatus

An image coding and image technology, which is applied in the field of image coding and decoding, can solve problems such as the decline of coding efficiency, achieve the effects of preventing color distortion, improving coding efficiency, and improving display quality

Inactive Publication Date: 2009-01-21
SAMSUNG ELECTRONICS CO LTD
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Problems solved by technology

[0004] When directly encoding an image in which color components have the same resolution as a YUV (or YCbCr) 4:4:4 image and an RGB4:4:4 image using a related art encoding method, the encoding efficiency will decrease

Method used

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  • Image encoding/decoding method and apparatus
  • Image encoding/decoding method and apparatus
  • Image encoding/decoding method and apparatus

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Embodiment Construction

[0029] Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] Figure 1A to Figure 1C displaying an R color component image, a G color component image, and a B color component image of a single color image, Figure 2A To show that according to an exemplary embodiment of the present invention Figure 1B The G color component image with Figure 1C A graphical representation of the correlation between the B color component images, Figure 2B To show that according to an exemplary embodiment of the present invention Figure 1A R color component image with Figure 1B Illustration of the correlation between the G color component images.

[0031] Generally, when encoding a color image, predictive encoding is performed on each color component image to remove redundant information in each color component. refer to Figure 1A to Figure 1C , the pixels of the RGB color component images at the same position i...

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Abstract

An image encoding / decoding method and apparatus, in which at least one of a plurality of color component images except a first color component image is predicted from motion estimation information or a reconstructed color component image of the first color component images using correlation among the plurality of color component images. The image encoding method includes performing predictive-encoding on the first color component image among the plurality of color component images forming a single image using a general encoding method, and performing motion estimation and compensation on the at least one of the other color component images or predicting the at least one of the other color component images using a reconstructed first color component image.

Description

technical field [0001] The method and device according to the present invention relate to image encoding and decoding, and more specifically, relate to an image encoding / decoding method and device, wherein the correlation between multiple color component images of an image is used to divide the multiple color component images The color component image(s) other than one of the color component images are predicted from motion estimation information or a reconstructed color component image of one of the color component images, thereby improving coding efficiency. Background technique [0002] Typically, when an image is captured, the captured image is in red, green, blue (RGB) format. In order to encode an RGB color format image, the RGB color format image is converted to a YUV (or YCbCr) color format. Y is a black and white image and has a brightness component, and U (or Cb) and V (or Cr) have color components. In an RGB image, the information is evenly distributed on the R,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32
CPCH04N19/00315H04N19/00781H04N19/00278H04N19/00733H04N19/00175H04N19/00024H04N19/105H04N19/147H04N19/176H04N19/186H04N19/51H04N19/61
Inventor 宋秉哲
Owner SAMSUNG ELECTRONICS CO LTD
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