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Real-Time Adaptive Contrast Enhancement
June 1981 (vol. 3 no. 6)
pp. 655-661
Patrenahalli M. Narendra, MEMBER, IEEE, Systems and Research Center, Honeywell, Inc., Minneapolis, MN 55413.
Robert C. Fitch, MEMBER, IEEE, Systems and Research Center, Honeywell, Inc., Minneapolis, MN 55413.
A recursive filter approach is introduced to simplify real-time implementation of an adaptive contrast enhancement scheme for imaging sensors. With this scheme, even scenes possessing large global dynamic ranges (>40 dB) can be accommodated by the limited dynamic range (20 dB) of a display without losing the local contrast essential for image interpretation. This paper describes the recursive filter implementation of the local area contrast enhancement scheme using charge-coupled devices and the resultant real-time hardware capable of processing standard 525 and 875 line TV compatible video (from vidicons, videotape recorders, etc). Several examples from video imagery are included to demonstrate its effectiveness.
Citation:
Patrenahalli M. Narendra, Robert C. Fitch, "Real-Time Adaptive Contrast Enhancement," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 3, no. 6, pp. 655-661, June 1981, doi:10.1109/TPAMI.1981.4767166
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