TY - JOUR
T1 - Video coding with wavelet transform on the very low bit rate communication channel
AU - Kim, Seong Whan
AU - Lee, Heung Kyu
N1 - Publisher Copyright:
© 1994 SPIE. All rights reserved.
PY - 1994/5/2
Y1 - 1994/5/2
N2 - In this paper, we present a moving image coding system which uses wavelet transform for the videophone on a very low bit rate communication channel (10 K bps PSTN). There are two requirements for our coding system: the good subjective quality for low bit rate coding and the suitability for progressive transmission. To satisfy the requirements, we use multifrequency motion estimation which estimates motion for each frequency bands. After the motion estimation, we can assign less bits to the motion estimation error in the high frequency bands because the human is insensitive to the change in high frequency components in the case of moving image. The experimental results confirm that our approach out-performs discrete cosine transform coding schemes in terms of the subjective quality because there are no blocking effects, and moreover, the wavelet transform in the approach supports the progressive transmission in itself.
AB - In this paper, we present a moving image coding system which uses wavelet transform for the videophone on a very low bit rate communication channel (10 K bps PSTN). There are two requirements for our coding system: the good subjective quality for low bit rate coding and the suitability for progressive transmission. To satisfy the requirements, we use multifrequency motion estimation which estimates motion for each frequency bands. After the motion estimation, we can assign less bits to the motion estimation error in the high frequency bands because the human is insensitive to the change in high frequency components in the case of moving image. The experimental results confirm that our approach out-performs discrete cosine transform coding schemes in terms of the subjective quality because there are no blocking effects, and moreover, the wavelet transform in the approach supports the progressive transmission in itself.
UR - http://www.scopus.com/inward/record.url?scp=85076641155&partnerID=8YFLogxK
U2 - 10.1117/12.174966
DO - 10.1117/12.174966
M3 - Conference article
AN - SCOPUS:85076641155
SN - 0277-786X
VL - 2187
SP - 309
EP - 320
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
T2 - Digital Video Compression on Personal Computers: Algorithms and Technologies 1994
Y2 - 6 February 1994 through 10 February 1994
ER -