TY - JOUR
T1 - An adaptive content based H.264/AVC rate control in low bit rate video
AU - Chen, Fu-Chuang
AU - Hsu, Yi Pin
PY - 2011/6/1
Y1 - 2011/6/1
N2 - In this paper, we analyze a rate control formula, which is Laplacian based model, then propose a content based equation for an enhanced JVT-G012 algorithm. Based on the simple and fast characteristics of the JVT-G012 algorithm, which is very suitable for real time embedded systems, we integrate the equation into the JVT-G012 algorithm to create an efficient quantizer. However, active local motion will produce error distortion and influence the determination of the quantization parameter. To solve this problem, a modified histogram based detector is proposed. Combining this detector with the equation refines the predicted quantization parameter more precisely. It is shown both theoretically and experimentally that a well-designed quantizer not only improves video quality, but also maintains the designed bit rate budget. In addition, our algorithm can achieve superior results to existing algorithms-up to 0.72 dB without large computation loading.
AB - In this paper, we analyze a rate control formula, which is Laplacian based model, then propose a content based equation for an enhanced JVT-G012 algorithm. Based on the simple and fast characteristics of the JVT-G012 algorithm, which is very suitable for real time embedded systems, we integrate the equation into the JVT-G012 algorithm to create an efficient quantizer. However, active local motion will produce error distortion and influence the determination of the quantization parameter. To solve this problem, a modified histogram based detector is proposed. Combining this detector with the equation refines the predicted quantization parameter more precisely. It is shown both theoretically and experimentally that a well-designed quantizer not only improves video quality, but also maintains the designed bit rate budget. In addition, our algorithm can achieve superior results to existing algorithms-up to 0.72 dB without large computation loading.
KW - Histogram based detector
KW - JVT-G012
KW - Laplacian based model
KW - Rate control
UR - http://www.scopus.com/inward/record.url?scp=79954576297&partnerID=8YFLogxK
U2 - 10.1016/j.aeue.2010.07.010
DO - 10.1016/j.aeue.2010.07.010
M3 - Article
AN - SCOPUS:79954576297
VL - 65
SP - 516
EP - 522
JO - AEU - International Journal of Electronics and Communications
JF - AEU - International Journal of Electronics and Communications
SN - 1434-8411
IS - 6
ER -