Fast Direct Mode Decision Algorithm based on Optimal Mode Pattern Searching
نویسندگان
چکیده
In H.264 video compression standard, B frame bi-directional predictions and its DIRECT mode coding are included to enhance video compression efficiency. However, such tools require a complex mode decision process and result in a long computation time. Therefore, fast algorithms are crucial in implementing H.264. In this paper, to save B frame encoding time, a fast DIRECT mode prediction algorithm is proposed, which determines DIRECT mode at an early stage by optimal mode pattern matching. Simulations show that the proposed algorithm can determine DIRECT mode without a complex mode decision process for 42% more macroblocks and, on mis-determination for DIRECT mode, cut down its rate-distortion (RD) cost increment by half, compared with Jin’s algorithm. This enables a fast B frame encoding with less quality degradation.
منابع مشابه
Fast Pattern Matching-based Direct Mode Decision Algorithm
In H.264, B frame bi-directional predictions and its DIRECT mode coding are included to enhance video compression efficiency. However, such tools are complex and result in a long computation time. This paper proposes a fast DIRECT mode prediction algorithm that enables to save B frame encoding time significantly by determining DIRECT mode (DM) at an early stage through optimal mode pattern matc...
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