Review: CNNAC — CNN-based Arithmetic Coding for DC Coefficients (HEVC Intra Coding)

DenseNet-like Network, Average 22.47% Bits Saving for DC Coefficients, Average 1.6% BD-Rate Reduction


1. DC Coefficients

DC Coefficient is at top left corner after DCT

2. Network Architecture

Flowchart of CNNAC
CNN Structure
Two synthetic images used to calculate the minimal and maximal values of DC coefficients in HEVC intra coding

3. Experimental Results

Bits saving for DC coefficients using CNNAC
BD-rate (%) using CNNAC

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