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31st Meeting: Geneva, CH, July 2023 2023-07-12 04:24
Non-EE2: Intra Angular Prediction Extension
Authors: Jiaye Fu PKU Jiaqi Zhang PKU C. Jia PKU Siwei Ma PKU Yiling Gao ZTE Cheng Huang ZTE
Abstract
This contribution proposes to derive the inter weight and intra weight of CIIP based on template matching cost. Given a CIIP coded CU, the TM cost values are calculated with different CIIP weights setting. Then, the CIIP weight with minimum TM cost value is selected to fusion intra prediction and inter prediction of CIIP. It is reported that on top of ECM-9.0, the overall coding performance impact are as follows:
Meeting Notes
JVET-AE0120 Non-EE2: Intra Angular Prediction Extension [J. Fu, J. Zhang, C. Jia, S. Ma (PKU)] [late]

In the ECM, current angular intra prediction is based on linear projection. 1 of 67 intra prediction modes is chosen to be the angle of projection, and the location of reference pixel are calculated, then the value of predicting pixel is calculated through 6-tap intra filter and the value of reference pixel.

In this contribution, it is proposed to extend the current linear projection function into quadratic projection function that takes two intra prediction modes. When two intra prediction modes are belonging to the set of vertical intra prediction mode, the location of reference pixel is inferred by the location of predicting pixel and the quadratic function generated by two intra prediction modes.

This document illustrates test results of the proposed method.

On top of the ECM-9.0, simulation result of the proposed method is reported as:

  • AI: -0.02%, -0.01%, 0.21%, 124.6%, 107.9%

The coding gain was low, and not consistent for the classes. The run time was much too large.

This was an interesting idea, but not relevant for action as long as the performance is not better.

ARCHIVE :
JVET-AE0129-v3.docx JVET-AE0129-v3.pptx JVET-AE0129-v3.xlsm
Decisions
This was an interesting idea, but not relevant for action as long as the performance is not better.
Citation