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LOW-COMPLEXITY MACROBLOCK MODE SELECTION FOR H.264/AVC ENCODERS Hyungjoon Kim and Yucel Altunbasak
 

Summary: LOW-COMPLEXITY MACROBLOCK MODE SELECTION FOR H.264/AVC ENCODERS
Hyungjoon Kim and Yucel Altunbasak
Center for Signal and Image Processing
Georgia Institute of Technology
Atlanta, GA 30332-0250
ABSTRACT
Lagrangian minimization is one of the most powerful tools
for Rate-Distortion optimal coding mode selection. How-
ever, in the latest video compression standard H.264/AVC,
the total calculation for costs of all candidate modes may
become huge since the new standard supports a large num-
ber of coding modes. In this paper, we propose an algorithm
for fast coding mode selection in H.264/AVC encoders by
reducing the number of candidate modes. We also present a
rate estimation method for further reduction of Lagrangian
cost calculation. Extensive experiments show that the pro-
posed methods can reduce the execution time of mode se-
lection in H.264/AVC reference software by 85% on the av-
erage while average PSNR loss is only 0.07 dB.
1. INTRODUCTION

  

Source: Altunbasak, Yucel - School of Electrical and Computer Engineering, Georgia Institute of Technology

 

Collections: Engineering