High Speed H.264 High Profile Deblocking using Statistical Analysis and Logic Optimization

In-loop deblocking filter is identified as the most time consuming part for H.264 high profile decoders. This paper proposes an improved platform and encoder independent deblocking scheme for H.264 high profile codec speedup. Two key techniques are introduced in the proposed algorithm: a statistical analysis based hybrid boundary strength derivation scheme and a more efficient logic expression for the B-slice boundary strength derivation. Compared to previously proposed algorithms, significant computation can be saved, while maintaining the bit-exact output. The proposed techniques can be used in both standard conforming encoders and decoders.