TY - GEN
T1 - Adaptive reweighted compressed sensing for image compression
AU - Zhu, Shuyuan
AU - Zeng, Bing
AU - Gabbouj, Moncef
PY - 2014
Y1 - 2014
N2 - According to the compressed sensing (CS) theory, a signal that is sparse in a certain domain can be nearly exactly recovered from a few measurements where the sampling rate is lower than the Nyquist rate. This theory has been successfully applied to the image compression in the past few years as most image signals are highly sparse. In this paper, we apply an adaptive sampling mechanism to the reweighted block-based CS (BCS). The proposed adaptive sampling allocates the measurements to each image block according to the statistical information of the block so as to sample and recover the image more efficiently. Experimental results demonstrate that our adaptive reweighted method offers a very significant quality improvement compared with the traditional BCS schemes, including the non-reweighted and reweighted ones.
AB - According to the compressed sensing (CS) theory, a signal that is sparse in a certain domain can be nearly exactly recovered from a few measurements where the sampling rate is lower than the Nyquist rate. This theory has been successfully applied to the image compression in the past few years as most image signals are highly sparse. In this paper, we apply an adaptive sampling mechanism to the reweighted block-based CS (BCS). The proposed adaptive sampling allocates the measurements to each image block according to the statistical information of the block so as to sample and recover the image more efficiently. Experimental results demonstrate that our adaptive reweighted method offers a very significant quality improvement compared with the traditional BCS schemes, including the non-reweighted and reweighted ones.
KW - adaptive CS sampling
KW - compressed sensing (CS)
KW - image compression
UR - https://www.scopus.com/pages/publications/84907408528
U2 - 10.1109/ISCAS.2014.6865050
DO - 10.1109/ISCAS.2014.6865050
M3 - Conference Paper published in a book
AN - SCOPUS:84907408528
SN - 9781479934324
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1
EP - 4
BT - 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
Y2 - 1 June 2014 through 5 June 2014
ER -