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Method and apparatus for image filtering with adaptive multiplier coefficients

An adaptive, multiplier technology, applied in the field of image processing, can solve problems such as inapplicability

Active Publication Date: 2020-10-20
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This problem does not apply to fixed filters, especially to filtering operations that employ multiple fixed filters

Method used

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  • Method and apparatus for image filtering with adaptive multiplier coefficients
  • Method and apparatus for image filtering with adaptive multiplier coefficients

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Embodiment Construction

[0077]In the following description, reference is made to the accompanying drawings which form a part hereof and which show by way of illustration specific aspects of embodiments of the invention or in which embodiments of the invention may be used. It should be understood that the embodiments of the present invention may be used in other aspects, and may include structural or logical changes not described in the accompanying drawings. Accordingly, the following detailed description is not to be taken as limiting, but the scope of the present invention is defined by the appended claims.

[0078] For example, it should be understood that disclosures in connection with a described method are equally applicable to a corresponding device or system for performing the method, and vice versa. For example, if one or more specific method steps are described, the corresponding device may include one or more units (for example, functional units) to perform the described one or more method...

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Abstract

An apparatus and a method for filtering reconstructed images, in particular, video images, with adaptive multiplicative filters are proposed. The efficiency of the filtering operation is increased bygrouping the filter coefficients in at least two groups and restricting the allowable values of the filter coefficients for one group as compared to the other group.

Description

technical field [0001] Embodiments of the invention relate to the field of image processing (eg video image and / or still image encoding). New methods and apparatus for image filtering using filters with adaptive multiplier filter coefficients are provided. Background technique [0002] Video coding (video encoding and decoding) is widely used in digital video applications such as broadcast digital TV, video transmission via the Internet and mobile networks, real-time session applications such as video chat and video conferencing, DVD and Blu-ray discs, video content acquisition and editing systems and camcorders for security applications. [0003] Since the block-based hybrid video coding method in the H.261 standard was developed in 1990, new video coding techniques and tools have been developed, and these new video coding techniques and tools have become the basis of new video coding standards. One of the goals of most video coding standards is to achieve lower bit rates...

Claims

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Application Information

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IPC IPC(8): H04N19/117H04N19/176H04N19/42H04N19/146
CPCH04N19/117H04N19/146H04N19/176H04N19/42H04N19/157H04N19/463H04N19/82
Inventor 塞米赫·艾森力克赵志杰阿南德·梅赫·科特拉陈建乐
Owner HUAWEI TECH CO LTD
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