Title :
Complexity adaptation in H.264/AVC video coder for static cameras
Author :
Kim, Chanyul ; Connor, Noel E O
Author_Institution :
CLARITY:Centre for Sensor Web Technol., Dublin City Univ., Dublin, Ireland
Abstract :
H.264/AVC uses variable block size motion estimation (VBS-ME) to improve coding gain. However, its complexity is significant and fixed regardless of the required quality or of the scene characteristics. In this paper, we propose an adaptive complexity algorithm based on using the Walsh Hadamard transform (WHT). VBS automatic partition and skip mode detection algorithms also are proposed. Experimental results show that 70% - 5% of the computation of H.264/AVC is required to achieve the same PSNR.
Keywords :
Hadamard transforms; Walsh functions; cameras; motion estimation; video coding; H.264/AVC video coder; Walsh Hadamard transform; adaptive complexity algorithm; skip mode detection algorithm; static cameras; variable block size motion estimation; Automatic voltage control; Cameras; Degradation; Discrete cosine transforms; Image edge detection; Layout; Motion estimation; Partitioning algorithms; Quadratic programming; Rate-distortion; H.264/AVC; WHT; skip mode;
Conference_Titel :
Picture Coding Symposium, 2009. PCS 2009
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4244-4593-6
Electronic_ISBN :
978-1-4244-4594-3
DOI :
10.1109/PCS.2009.5167380
