TY - GEN
T1 - Resolution enhancement of colored images by inverse diffusion processes
AU - Sochen, N.
AU - Zeevi, Y. Y.
PY - 1998
Y1 - 1998
N2 - Algorithms for resolution enhancement are needed in various applications of image processing and communication such as compression, and HDTV. We develop a geometrical algorithm, based on diffusion processes which are used both for smoothing of colored images and enhancement of the colored images. The latter is accomplished by «solving» an inverse diffusion problem which is ill-posed. In order to stabilize the flow, as well as to enhance important features (e.g. edges) at the expense of less important image domains, we use a modified Beltrami diffusion equation. Results indicate that it is possible to impose the backwards flow, in spite of the instabilities, and thereby enhance the image up to a certain level of resolution which depends on the nature of the image.
AB - Algorithms for resolution enhancement are needed in various applications of image processing and communication such as compression, and HDTV. We develop a geometrical algorithm, based on diffusion processes which are used both for smoothing of colored images and enhancement of the colored images. The latter is accomplished by «solving» an inverse diffusion problem which is ill-posed. In order to stabilize the flow, as well as to enhance important features (e.g. edges) at the expense of less important image domains, we use a modified Beltrami diffusion equation. Results indicate that it is possible to impose the backwards flow, in spite of the instabilities, and thereby enhance the image up to a certain level of resolution which depends on the nature of the image.
UR - http://www.scopus.com/inward/record.url?scp=0031623967&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.1998.678119
DO - 10.1109/ICASSP.1998.678119
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AN - SCOPUS:0031623967
SN - 0780344286
SN - 9780780344280
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 2853
EP - 2856
BT - Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1998 23rd IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998
Y2 - 12 May 1998 through 15 May 1998
ER -