TY - GEN
T1 - Combining vector quantization and histogram equalization
AU - Cosman, Pamela C.
AU - Riskin, Eve A.
AU - Gray, Robert M.
N1 - Publisher Copyright:
© 1991 IEEE.
PY - 1991
Y1 - 1991
N2 - Histogram equalization is a contrast enhancement technique in which each pixel is remapped to an intensity proportional to its rank among surrounding pixels. Histogram equalization is a competitor of interactive intensity windowing, which is the established contrast enhancement technique for medical images. We present work in which histogram equalization is performed on the codebook of a tree-structured vector quantizer. Encoding with the resulting codebook performs both compression and contrast enhancement. It is also possible to perform intensity windowing on the codebook, or a combination of intensity windowing and histogram equalization, so that these need not be done as separate post-processing steps.
AB - Histogram equalization is a contrast enhancement technique in which each pixel is remapped to an intensity proportional to its rank among surrounding pixels. Histogram equalization is a competitor of interactive intensity windowing, which is the established contrast enhancement technique for medical images. We present work in which histogram equalization is performed on the codebook of a tree-structured vector quantizer. Encoding with the resulting codebook performs both compression and contrast enhancement. It is also possible to perform intensity windowing on the codebook, or a combination of intensity windowing and histogram equalization, so that these need not be done as separate post-processing steps.
UR - http://www.scopus.com/inward/record.url?scp=84958318295&partnerID=8YFLogxK
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U2 - 10.1109/DCC.1991.213378
DO - 10.1109/DCC.1991.213378
M3 - Conference contribution
AN - SCOPUS:84958318295
T3 - Data Compression Conference Proceedings
SP - 113
EP - 118
BT - Data Compression Conference 1991
T2 - 1991 Data Compression Conference, DCC 1991
Y2 - 8 April 1991 through 11 April 1991
ER -