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Image format conversion and recovery method and device

A technology of image format and conversion method, applied in the field of image processing, which can solve the problems of component offset and the inability of element components to be fully compensated, and achieve the effect of improving the quality of color images

Active Publication Date: 2012-08-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide an image format conversion and recovery method to solve the problem that the lost element components of still images in video images cannot be fully compensated and restored to the original image format when image format conversion is performed in the prior art There is a problem with component offset after

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  • Image format conversion and recovery method and device
  • Image format conversion and recovery method and device

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Embodiment Construction

[0048] The embodiment of the present invention provides an image format conversion method. When performing image format conversion, for a specific element component, the method of discarding each frame of image is interlaced, that is, every other row of specific element components is discarded. One row of specific element components, and The line numbers for adjacent frame drops are exactly the opposite. For example, if the line number lost in the current frame is an odd line, then the line number lost in the next frame will be an even line, ensuring that the line number dropped in the current frame will not be discarded in the next frame, so that when restoring a still image, it can be retrieved from adjacent frames Obtain specific element component information to compensate for the discarded lines of the current frame and restore image quality completely.

[0049] The image format conversion method that the embodiment of the present invention provides, comprises the followin...

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Abstract

The inventive embodiment provides an image format conversion and recovery method. The special element component of each frame of image of a first format is subjected to interlaced discard treatment (rows of the discarded special element components of the neighbor frames are opposite), to obtain an image data of a second format. When the image of the second format is recovered to the image data ofthe first format, the discarded and static special element component of each frame of the second format is subjected to interframe compensation treatment, and the motive special element component is subjected to in-frame compensation treatment. The inventive embodiment also provides an image format conversion and recovery device. The inventive method and device can compensate the current special element component by using the information of special element component obtained from the neighbor frames, particularly for the static image in the video image, so as to completely recover the discarded special element component and thus to improve the color image quality of the video image.

Description

technical field [0001] The invention relates to the field of image processing, in particular to methods and devices for converting and restoring image formats. Background technique [0002] At present, with the development of communication network technology, people's demand for video images is also increasing, and video codec technology has been widely used. The original image format collected by image acquisition devices such as cameras generally takes up a large storage space. In order to facilitate local storage or network transmission, it is necessary to convert one image format into another image format to save storage space and reduce image size. transmission bandwidth. For example, if the original image collected is an image in YUV422 format, it will be converted into an image in YUV420 format through chroma conversion, and then the image will be encoded and compressed; the compressed code stream will be decoded into an image in YUV420 format after wired or wireless...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N7/26H04N19/172H04N19/51H04N19/593H04N19/70
Inventor 李昭早刘宏波
Owner HUAWEI TECH CO LTD
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