The Joint Collaborative Team on Video Coding (jct-vc) of itu-t wp3/16 and iso/iec jtc 1/sc 29/wg 11 held its second meeting during 21-28 July, 2010 at the itu-t premises in Geneva, ch

JCTVC-B093 [F. Bossen (DOCOMO USA Labs), TK Tan, J. Takiue (NTT DOCOMO)] Simplified angular intra prediction

This contribution presents simulation results using several configurations of the intra prediction tools integrated into the TMuC software. The comparison shows that angular intra prediction performs the best. A simplified angular intra prediction method is also presented and compared. It achieves the same coding efficiency as angular prediction but with reduced complexity.

In TMuC, ADI (arbitrary direction I) and ANG (angular prediction) have very similar effect. It was found that angular prediction has better performance; a simplification of ANG is proposed as well. For negative angles, the main reference is extended, such that the side reference is no longer necessary. This saves the current division and sample testing.

Original TMuC uses ANG for 8x8 and ADI for other sizes.

Results show that switching off ADI totally does not decrease the gain significantly (only in 4 cases losses in the range of 0.1-0.2 %), whereas the loss due to the simplification is marginal.

It was suggested to establish TE to include this method.