Correcting color and hyperspectral images with identification of distortion model
•A novel identification-based image correction method using a bi-illuminant dichromatic reflection model is proposed that works well both for color and hyperspectral images.•Image patches with uniform properties on distorted and distortions-free images are used as a prior knowledge for identificatio...
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Veröffentlicht in: | Pattern recognition letters 2016-11, Vol.83 (2), p.178-187 |
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Hauptverfasser: | , , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | •A novel identification-based image correction method using a bi-illuminant dichromatic reflection model is proposed that works well both for color and hyperspectral images.•Image patches with uniform properties on distorted and distortions-free images are used as a prior knowledge for identification.•For matching pairs of distorted and distortions-free patches to exist, a necessary condition was proposed and theoretically proved.•Color correction function can be identified using a RANSAC-based optimization with the found necessary condition as an optimization constraint.
This paper presents a novel identification-based image correction method using a bi-illuminant dichromatic reflection model. Image patches with uniform properties over distorted and distortion-free images or image parts are used as a prior knowledge for identification. We identify the distortion correction function on a set of these patches, called spectrum shape elements, with the Hausdorff metric. The main issue during prior knowledge representation is for each distorted spectrum shape element to find a corresponding distortion-free element. A necessary condition to find a matching spectrum shape element is presented and theoretically proved. Identification problem was solved using a RANSAC-based optimization with this necessary condition as an optimization constraint. The method works well both for color and hyperspectral images. The proposed image correction procedure was tested on a set of color images and AVIRIS hyperspectral remote sensing data and proved to provide the quality superior to the results obtained with Retinex correction. |
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ISSN: | 0167-8655 1872-7344 |
DOI: | 10.1016/j.patrec.2016.06.027 |