Mode-dependent transform competition for HEVC

Adria Arrufat, Pierrick Philippe, Olivier Deforges
2015 2015 IEEE International Conference on Image Processing (ICIP)  
Transform coding plays a key role in state-of-the-art video coders, such as HEVC. However, transforms used in current solutions do not cover the varieties of video coding signals. This work presents an adaptive transform design method that enables the use of multiple transforms in HEVC. A different transform set is learnt for each intra prediction mode, allowing the video encoder to perform better decisions regarding block sizes, prediction modes and transforms. Different systems are proposed
more » ... accommodate trade-offs between complexity and performance. Bit rate reductions in the range of 2% to 7% are reported, depending on complexity.
doi:10.1109/icip.2015.7351070 dblp:conf/icip/ArrufatPD15 fatcat:654ehbdrnvakfnx2lhpxvoavsy