The Optimizing Implementation of Fast Loop Filter Based on C6455 DSP

H.264 is the newest high performance video encoding standard that is attributed to applying several new efficient compress methods such as loop filter. The computational time consumed of H.264 increased by 2 or more times compared with previous standard and it hard to implement in many read time or resource-limited application. To speedup the critical time-consuming module, a fast loop filter algorithm is proposed by optimizing the two main processes that are the boundary strength decision and real pixel-level filter. Based on instruction structure of C6455 DSP, we implement a fast loop filter and the experimental data show that the proposed optimizing methods are so efficient that the loop filter not only has fast enough speed but also has high quality restore image.