Adaptive Histogram Equalization And Its Applications

Victor T. Tom; Gregory J. Wolfe

doi:10.1117/12.965966

17 March 1983 Adaptive Histogram Equalization And Its Applications

Victor T. Tom, Gregory J. Wolfe

Proceedings Volume 0359, Applications of Digital Image Processing IV; (1983) https://doi.org/10.1117/12.965966
Event: 26th Annual Technical Symposium, 1982, San Diego, United States

Abstract

This paper describes an efficient array-processor implementation of an adaptive histogram equalization algorithm for digital image enhancement. The algorithm is based on a sliding window approach, and computes local histograms and grey level mappings for generating uniform (equalized) histograms for each pixel location. Equivalently, this method can be interpreted as generating local maximum entropy representations of the original image data. For sample digital imagery, it is shown that on the average, a 62% increase in local entropy can be obtained. In addition, the effects of adjusting key parameters (such as local brightness, gain, etc.) upon processed imagery are discussed. The technique has been applied to the analysis of high quality digital imagery and found to be particularly effective for accentuating subtle texture and detail in the data.

Citation Download Citation

Victor T. Tom and Gregory J. Wolfe "Adaptive Histogram Equalization And Its Applications", Proc. SPIE 0359, Applications of Digital Image Processing IV, (17 March 1983); https://doi.org/10.1117/12.965966

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available