Histogram Modification Techniques

Abstract

The theory of histogram modification of continuous real-valued pictures is developed. It is shown that the transformation of gray levels taking a picture's histogram to a desired histogram is unique under the constraint that the transformation be monotonic increasing. Algorithms for implementing this solution on digital pictures are discussed. A gray level transformation is useful for increasing visual contrast, but may destroy some of the information content. It is shown that solutions to the problem of minimizing the sum of the information loss and the histogram discrepancy are solutions to certain differential equations, which can be solved numerically.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
ADA008791

Entities

People

  • Robert A. Hummel

Organizations

  • University of Maryland

Tags

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Operations Research
  • Regression Analysis.