Translated Titles

A Multi-Step and Multi-Branch Intra-Prediction Mode Decision Algorithm for H.264


林熙(Xi Lin)

Key Words

H.264/AVC ; 幀內預測編碼 ; 模式選擇 ; PSNR ; 編碼時間 ; H.264/AVC ; intra-prediction encoding ; mode decision ; PSNR ; encoding time



Volume or Term/Year and Month of Publication

27卷5期(2005 / 10 / 01)

Page #

158 - 162

Content Language


Chinese Abstract


English Abstract

A multi-step and multi-branch fast intra-prediction mode decision algorithm for H.264/AVC is proposed. The algorithm first uses frequency distributing characteristics of the integer DCT transform domain to filter out several unlikely candidate modes efficiently and then an improved rate-distortion model and the original model in H.264 are applied selectively to the remaining candidate mode to obtain the optimized ones. Experimental results demonstrate that this algorithm reduces the encoding time to 1/6~1/3 of the original mode decision with nearly the same PSNR and encoding bitrate. The aim to reduce the computing complexity and increase the encoding efficiency is achieved.

Topic Category 基礎與應用科學 > 資訊科學
社會科學 > 管理學