TY - JOUR
T1 - Variable bit-rate coding based on human visual system
AU - Katto, Jiro
AU - Onda, Katsumasa
AU - Yasuda, Yasuhiko
PY - 1991/9
Y1 - 1991/9
N2 - One of the merits with the introduction of variable bit-rate coding to moving pictures is the constancy of picture quality. However, considering the fact that conventional SNR cannot reflect the result of subjective assessment sufficiently, other quality measures should be considered to design the variable bit-rate coders. In this paper, weighted SNR (WSNR), which is calculated by weighting coding errors with the spatial frequency response of human vision, is introduced as a quality measure in place of SNR, and the variable bit-rate coder based on this measure is considered. Then, subjective assessment is carried out and the effectiveness of our approach is confirmed.
AB - One of the merits with the introduction of variable bit-rate coding to moving pictures is the constancy of picture quality. However, considering the fact that conventional SNR cannot reflect the result of subjective assessment sufficiently, other quality measures should be considered to design the variable bit-rate coders. In this paper, weighted SNR (WSNR), which is calculated by weighting coding errors with the spatial frequency response of human vision, is introduced as a quality measure in place of SNR, and the variable bit-rate coder based on this measure is considered. Then, subjective assessment is carried out and the effectiveness of our approach is confirmed.
KW - Variable bit-rate coding
KW - human visual system
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U2 - 10.1016/0923-5965(91)90037-3
DO - 10.1016/0923-5965(91)90037-3
M3 - Article
AN - SCOPUS:0026220010
SN - 0923-5965
VL - 3
SP - 313
EP - 320
JO - Signal Processing: Image Communication
JF - Signal Processing: Image Communication
IS - 4
ER -