A method and device for adaptive loop filtering in video encoding and decoding
A video coding and decoding, adaptive loop technology, applied in the field of digital signal processing, can solve the problems of ALF technology failing to calculate complexity, hardware implementation cost and coding efficiency balance, so as to reduce the complexity, reduce errors, improve the The effect of coding efficiency
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Problems solved by technology
 Such as figure 2 As shown, this embodiment provides a method for performing adaptive loop filtering in video encoding and decoding, including: solving the filter coefficient of the current image at the encoding end, and calculating the color components of the current image according to the filter coefficient filter, and obtain the frame-level filter control switch and LCU-level filter control switch of each color component; The LCU-level filter control switch selectively uses the reconstructed filter coefficients to filter each pixel in the LCU.
 The specific implementation processes of the method for performing adaptive loop filtering (ALF) described in this embodiment at the encoding end and the decoding end are respectively introduced below.
 1. Encoding end
 At the encoding end, it mainly completes the calculation of the filter coefficient of the current image and obtains it by controlling the switch.
 1. Filter coefficient soluti...
 This embodiment is a device for performing adaptive loop filtering in video coding and decoding corresponding to Embodiment 1, such as Figure 8 As shown, it includes: an encoding end filtering module, which is used to solve the filter coefficient of the current image at the encoding end, filter each color component of the current image according to the filter coefficient, and obtain the frame-level filter control switch and The LCU-level filter control switch; and the decoding-end filter module are used to reconstruct the filter coefficients at the decoding end according to the frame-level filter control switches and corresponding filter coefficients of each color component, and select according to the obtained LCU-level filter control switch. Each pixel in the LCU is filtered using the reconstructed filter coefficients.
 Wherein, the encoding end filtering module includes: a filter coefficient solving module, which is used to train filter coefficients for the ...
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