TY - GEN
T1 - Image enhancement using sorted histogram specification and POCS postprocessing
AU - Jung, Il Lyong
AU - Kim, Chang-Su
PY - 2006
Y1 - 2006
N2 - An image enhancement algorithm based on the sorted histogram equalization (SHE) and specification (SHS) is proposed in this work. Although SHE and SHS can generate an arbitrary output histogram exactly, they yield false contour artifacts and amplify noises in many cases. To reduce these artifacts, we propose a postprocessing scheme using the projection onto convex sets (POCS) theory. Specifically, the proposed algorithm iteratively processes the output images of SHE and SHS using the low-pass, boundary and dithering conditions. Simulation results demonstrate that the proposed algorithm provides an excellent image quality, by improving the contrast while reducing undesired artifacts.
AB - An image enhancement algorithm based on the sorted histogram equalization (SHE) and specification (SHS) is proposed in this work. Although SHE and SHS can generate an arbitrary output histogram exactly, they yield false contour artifacts and amplify noises in many cases. To reduce these artifacts, we propose a postprocessing scheme using the projection onto convex sets (POCS) theory. Specifically, the proposed algorithm iteratively processes the output images of SHE and SHS using the low-pass, boundary and dithering conditions. Simulation results demonstrate that the proposed algorithm provides an excellent image quality, by improving the contrast while reducing undesired artifacts.
KW - Histogram equalization
KW - Histogram specification
KW - Image enhancement
KW - POCS
UR - http://www.scopus.com/inward/record.url?scp=48149105170&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=48149105170&partnerID=8YFLogxK
U2 - 10.1109/ICIP.2007.4379012
DO - 10.1109/ICIP.2007.4379012
M3 - Conference contribution
AN - SCOPUS:48149105170
SN - 1424414377
SN - 9781424414376
T3 - Proceedings - International Conference on Image Processing, ICIP
SP - I545-I548
BT - 2007 IEEE International Conference on Image Processing, ICIP 2007 Proceedings
T2 - 14th IEEE International Conference on Image Processing, ICIP 2007
Y2 - 16 September 2007 through 19 September 2007
ER -