Abstract
In this paper, two improved intra angular prediction methods are proposed to enhance coding performance. The first method applies new four-tap interpolation filter algorithm. The reference samples at fractional position are interpolated by DCT-based or Gaussian interpolation filter. The second method proposes extended boundary prediction filter to reduce the prediction error. The experimental results show that for AI configuration, the overall coding gain is about 0.85% on average comparing to HEVC reference software while maintaining almost the same coding time.
Li Song
Professor, IEEE Senior Member
Professor, Doctoral Supervisor, the Deputy Director of the Institute of Image Communication and Network Engineering of Shanghai Jiao Tong University, the Double-Appointed Professor of the Institute of Artificial Intelligence and the Collaborative Innovation Center of Future Media Network, the Deputy Secretary-General of the China Video User Experience Alliance and head of the standards group.