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- W3094311452 abstract "Convolutional neural network (CNN)-based filters have achieved great success in video coding. However, in most previous works, individual models are needed for each quantization parameter (QP) band. This paper presents a generic method to help an arbitrary CNN-filter handle different quantization noise. We model the quantization noise problem and implement a feasible solution on CNN, which introduces the quantization step (Qstep) into the convolution. When the quantization noise increases, the ability of the CNN-filter to suppress noise improves accordingly. This method can be used directly to replace the (vanilla) convolution layer in any existing CNN-filters. By using only 25% of the parameters, the proposed method achieves better performance than using multiple models with VTM-6.3 anchor. Besides, an additional BD-rate reduction of 0.2% is achieved by our proposed method for chroma components." @default.
- W3094311452 created "2020-10-29" @default.
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- W3094311452 date "2020-10-25" @default.
- W3094311452 modified "2023-09-27" @default.
- W3094311452 title "A QP-adaptive Mechanism for CNN-based Filter in Video Coding" @default.
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- W3094311452 doi "https://doi.org/10.48550/arxiv.2010.13059" @default.
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