Hardware Friendly Mode Decision Algorithm for High Definition AVS Video Encoder

Abundant intra and inter prediction modes contribute to the superior coding performance of the AVS video coding standard remarkably. However, the resulting implementation complexity is very high, and the real-time throughput is dramatically challenged especially in high definition video coding. So, hardware implementation is highly desired, and hardware oriented mode decision algorithm is mainly focused in this paper. Mode pre-selection is employed to alleviate the dramatic throughout burden. Also, intelligent mode decision pipeline schedule mechanism is proposed to break the intrinsic data dependency in intra prediction which is harmful for hardware pipelining. The proposed mode decision is well-suited for hardware implementation, and the resulting performance penalties are simulated and shown.