Reading: Zhao ISCAS’18 & TCSVT’19 — Enhanced Bi-prediction with Convolutional Neural Network (HEVC Inter Prediction)

VDSR-Like Network, 3.0% Average BD-Rate Reduction Compared to the Conventional HEVC

Outline

1. Bi-Prediction in Video Coding

Bi-Prediction in Conventional Video Coding (Above are Blocks Compensated by Motions)
Bi-Prediction in Proposed Approach (Above are Blocks Compensated by Motions)
Bi-Prediction Approaches in Conventional Video Coding and in CNN

2. Proposed Network Architecture

Proposed Network Architecture

3. HEVC Implementation

The Conventional Bi-Prediction and Proposed CNN-Based Bi-Prediction in HEVC

4. Experimental Results

Ablation Study on Skip Connection
Ablation Study on Filter Number
Ablation Study on Filter Size
Ablation Study on Number of Layers
BD-Rate (%) Using RA and LDB Configuration Compared to the Conventional HEVC
CU Size Distribution
Left: Ground Truth, Middle: HEVC, Right: CNN
Encoding and Decoding Time

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