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An implementation of the Gradient Magnitude Similarity Deviation (GMSD) algorithm for full reference image quality assessment by Xue, Zhang, Mou and Bovik

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libgmsd Travis CI

https://github.com/clunietp/libgmsd

Introduction

libgmsd is a portable C library and command-line tool for full-reference image quality assessment.

libgmsd is an implementation of the Gradient Magnitude Similarity Deviation (GMSD) algorithm by Xue, Zhang, Mou, and Bovik. http://www4.comp.polyu.edu.hk/~cslzhang/IQA/GMSD/GMSD.htm

Features

  • Cross-platform; tested MSVC17, GCC 4.6, Clang 5
  • Efficient: ~12ms MSVC 15.8, ~6.5ms gcc -o3 (cygwin); 512x384 grayscale input on Core i5-4210U @ 1.7GHz
  • No external dependencies
  • Unit tested, valgrind clean
  • Permissive license (MIT)

Usage

Tested compilers:

  • MSVC 2017
  • gcc 4.6
  • clang 5

Tests Travis CI

  • Tests/benchmark included in /test/

Acknowledgements

http://www4.comp.polyu.edu.hk/~cslzhang/IQA/GMSD/GMSD.htm , Gradient Magnitude Similarity Deviation: A Highly Efficient Perceptual Image Quality Index by Xue, Zhang, Mou, Bovik

https://github.com/chazomaticus/libbmpread , tiny, fast bitmap (.bmp) image file loader by Charles Lindsay. Libbmpread is used in the test and command line apps for bmp input.

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An implementation of the Gradient Magnitude Similarity Deviation (GMSD) algorithm for full reference image quality assessment by Xue, Zhang, Mou and Bovik

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