Pixel-wise Illumination Correction Algorithms for Relative Color Constancy under the Spectral Domain

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Achieving color constancy between and within images, i.e., minimizing the color difference between the same object imaged under nonuniform and varied illuminations is crucial for computer vision tasks such as colorimetric analysis and object recognition. Most current methods attempt to solve this by illumination correction on perceptual color spaces. In this paper, we proposed two pixel-wise algorithms to achieve relative color constancy by working under the spectral domain. That is, the proposed algorithms map each pixel to the reflectance ratio of objects appeared in the scene and perform illumination correction in this spectral domain. Also, we proposed a camera calibration technique that calculates the characteristics of a camera without the need of a standard reference. We show that both of the proposed algorithms achieved the best performance on nonuniform illumination correction and relative illumination matching respectively compared to the benchmarked algorithms.

Original languageEnglish
Title of host publication2018 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages638-643
Number of pages6
ISBN (Electronic)9781538675687
DOIs
Publication statusPublished - 14 Feb 2019
Event2018 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2018 - Louisville, United States
Duration: 06 Dec 201808 Dec 2018

Conference

Conference2018 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2018
CountryUnited States
CityLouisville
Period06/12/201808/12/2018

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Keywords

  • algorithm
  • camera calibration
  • color constancy
  • illumination correction

Cite this

Zhao, Y., Elliott, C., Zhou, H., & Rafferty, K. (2019). Pixel-wise Illumination Correction Algorithms for Relative Color Constancy under the Spectral Domain. In 2018 IEEE International Symposium on Signal Processing and Information Technology, ISSPIT 2018 (pp. 638-643). [8642759] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISSPIT.2018.8642759