TY - GEN
T1 - Resolution enhancement by polyphase back-projection filtering
AU - Cohen, B.
AU - Dinstein, I.
PY - 1998/12/1
Y1 - 1998/12/1
N2 - The method for reconstruction and restoration of super resolution images from low resolution sequences presented is an extension of Irani and Peleg's (1991) algorithm. The input is a set of low resolution images that have been registered to a pixel translation accuracy. A high resolution image is initialized and iteratively improved by back-projecting the errors between the low resolution images and the respective images obtained by simulating the imaging system. The sub-pixel translations between the low resolution images are quantized. The imaging system's PSF and back-projection function are estimated with a resolution higher than that of the super resolution image and decimated so that two banks of polyphase filters are obtained. The use of the polyphase filters allows exploitation of all the input images without any smoothing or interpolation operations.
AB - The method for reconstruction and restoration of super resolution images from low resolution sequences presented is an extension of Irani and Peleg's (1991) algorithm. The input is a set of low resolution images that have been registered to a pixel translation accuracy. A high resolution image is initialized and iteratively improved by back-projecting the errors between the low resolution images and the respective images obtained by simulating the imaging system. The sub-pixel translations between the low resolution images are quantized. The imaging system's PSF and back-projection function are estimated with a resolution higher than that of the super resolution image and decimated so that two banks of polyphase filters are obtained. The use of the polyphase filters allows exploitation of all the input images without any smoothing or interpolation operations.
UR - http://www.scopus.com/inward/record.url?scp=0031645470&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.1998.678137
DO - 10.1109/ICASSP.1998.678137
M3 - Conference contribution
AN - SCOPUS:0031645470
SN - 0780344286
SN - 9780780344280
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 2921
EP - 2924
BT - Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
T2 - 1998 23rd IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
Y2 - 12 May 1998 through 15 May 1998
ER -