Method and device for image filtering
A picture and image block technology, applied in the video field, can solve problems such as insufficient video memory, unsatisfactory equipment, high resources, etc., and achieve the effect of reducing resources
Active Publication Date: 2021-06-11
HANGZHOU HIKVISION DIGITAL TECH
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Problems solved by technology
[0005] Currently, the in-loop filtering module filters the entire frame of the reconstructed picture. When the reconstructed picture is a high-resolution picture, the resources required for filtering and reconstructing the picture are often high, so that the device may not be able to meet the requirements.
For example, filtering a reconstructed picture with 4K resolution may cause insufficient video memory
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[0083] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.
[0084] see figure 1 , the embodiment of the present application provides a method for image filtering, including:
[0085] Step 101: Obtain the distorted picture generated by the video encoding and decoding process.
[0086] Step 102: Obtain multiple distorted image blocks by dividing the distorted picture.
[0087] Optionally, in the process of video encoding or decoding, a whole fra...
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The present application relates to a method and device for image filtering, and belongs to the field of video. The method includes: obtaining a distorted picture generated during a video encoding and decoding process; obtaining a plurality of distorted image blocks included in the distorted picture by dividing the distorted picture; Each distorted image block is filtered to obtain the de-distorted image block corresponding to each distorted image block; a frame of picture is generated according to the de-distorted image block corresponding to each distorted image block. The device includes: a first acquiring module, a second acquiring module, a filtering module and a generating module. The present application can reduce the resources required for filtering, so that the device can meet the resources required for filtering.
Description
technical field [0001] The present application relates to the field of video, in particular to a method and device for image filtering. Background technique [0002] In a video coding system, when encoding an original video picture, the original video picture will be processed multiple times to obtain a reconstructed picture. The obtained reconstructed picture may have been pixel-shifted relative to the original video picture, that is, the reconstructed picture is distorted, resulting in visual impairment or artifacts. [0003] These distortions not only affect the subjective and objective quality of the reconstructed image, but if the reconstructed image is used as a reference for subsequent encoding pixels, it will also affect the prediction accuracy of subsequent encoding pixels and affect the size of the final bit stream. Therefore, in the video encoding and decoding system, an in-loop filtering module is added, and the reconstructed picture is filtered by the in-loop f...
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IPC IPC(8): H04N19/103H04N19/13H04N19/184H04N19/61H04N19/80
CPCH04N19/103H04N19/13H04N19/184H04N19/61H04N19/80
Inventor 姚佳宝
Owner HANGZHOU HIKVISION DIGITAL TECH