Image processing method and system
An image processing and image technology, which is applied in the field of image processing and can solve the problems of slow filtering processing speed and simultaneous filtering of adjacent macroblocks.
Active Publication Date: 2014-07-30
HUAWEI TECH CO LTD
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[0004] It is stipulated in the prior art that the loop filter needs to filter the boundaries sequentially according to the specified order, and the filtering of the latter boundary needs to rely on the filtering result of the previous boundary, so that adjacent boundaries and adjacent macroblocks cannot be filtered simultaneously, resulting in Filter processing is slow
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[0074] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0075] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a particular order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other th...
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The embodiment of the invention relates to the technical field of image processing, and discloses an image processing method and system. The image processing method comprises the steps that macro blocks of an image are divided into a plurality of sub-blocks; boundaries in need of filtering are determined according to first-class pixel values of the two sides of each boundary of the sub-blocks; filtering strength parameters of the boundaries in need of filtering are calculated; the first-class pixel values of the two sides of the boundaries in need of filtering are corrected according to the filtering strength parameters, wherein the first-class pixel values comprise the pixel values p0, p1, q0 and q1 of the two sides of the vertical boundaries or the pixel values m0, m1, n0 and n1 of the two sides of the horizontal boundaries. By means of the image processing method, data dependency of adjacent boundaries in a loop filtering method can be eliminated, and therefore the adjacent boundaries and the adjacent macro blocks can be filtered at the same time.
Description
technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method and system. Background technique [0002] H.264 is superior to existing video coding standards such as MPEG2, MPEG4 and H.263 in terms of video quality, compression efficiency and data packet recovery. Under the same reconstructed image quality, H.264 can save about 50% bit rate compared with H.263. However, the superior performance obtained by H.264 is at the cost of increased computational complexity, which is equivalent to three times that of H.263. Therefore, how to improve the computing efficiency of each module in H.264 to achieve real-time processing has become an important research topic. [0003] Loop filtering (also known as deblocking filtering) is one of the key processing links in the H.264 standard. Both the encoder and the decoder include a loop filtering link, which is used to filter the reconstructed image to remove ...
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IPC IPC(8): H04N19/82H04N19/117
Inventor 郑士胜郭成安
Owner HUAWEI TECH CO LTD