A New Contrast Measurement Index Based on Logarithmic Image Processing Model

Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 199)

Abstract

With the introduction of more complex enhancement algorithms, there is a need for an effective method of enhancement measurement that can assess image quality in accordance with Human Visual System (HVS) characteristics. This paper presents a new quality index for measurement of contrast in digital images based on Logarithmic Image Processing (LIP) model. The proposed quality index evaluates the degree of contrast manipulation (provided by an enhancement algorithm) by considering the difference in the average gray level values in its foreground to that of background. The calculated statistical parameters for foreground and background regions are mathematically combined using the LIP operators to ensure processing of images from HVS point of view. The quality index is computed for different contrast manipulating algorithms which are applied to test images taken from standard MATLAB library as well as LIVE Database. Simulation results illustrate the precision and efficiency of the proposed index in comparison to other contrast evaluation methods proposed in literature.

Keywords

No-Reference LIP Model Contrast Measurement Index (CMI) Image Quality Assessment Hadamard Transform 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Mridul Trivedi
    • 1
  • Anupam Jaiswal
    • 1
  • Vikrant Bhateja
    • 1
  1. 1.Deptt. of Electronics and Communication EngineeringShri Ramswaroop Memorial Group of Professional CollegesLucknowIndia

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