Hue-preserving color image enhancement without gamut problem
Top Cited Papers
- 1 December 2003
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Image Processing
- Vol. 12 (12), 1591-1598
- https://doi.org/10.1109/tip.2003.819231
Abstract
The first step in many techniques for processing intensity and saturation in color images keeping hue unaltered is the transformation of the image data from RGB space to other color spaces such as LHS, HSI, YIQ, HSV, etc. Transforming from one space to another and processing in these spaces usually generate a gamut problem, i.e., the values of the variables may not be in their respective intervals. We study enhancement techniques for color images theoretically in a generalized setup. A principle is suggested to make the transformations gamut-problem free. Using the same principle, a class of hue-preserving, contrast-enhancing transformations is proposed; they generalize existing grey scale contrast intensification techniques to color images. These transformations are also seen to bypass the above mentioned color coordinate transformations for image enhancement. The developed principle is used to generalize the histogram equalization scheme for grey scale images to color images.Keywords
This publication has 18 references indexed in Scilit:
- Color image enhancement through 3-D histogram equalizationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- 3-D histogram modification of color imagesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A recursive technique for 3-D histogram enhancement of color imagesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Efficient luminance and saturation processing techniques for bypassing color coordinate transformationsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- A new algorithm based on saturation and desaturation in the xy chromaticity diagram for enhancement and re-rendition of color imagesPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Adaptive-neighborhood histogram equalization of color imagesJournal of Electronic Imaging, 2001
- Multichannel techniques in color image enhancement and modelingIEEE Transactions on Image Processing, 1996
- A multivariate contrast enhancement technique for multispectral imagesIEEE Transactions on Geoscience and Remote Sensing, 1995
- Histogram equalization of 24-bit color images in the color difference (C-Y) color spaceJournal of Electronic Imaging, 1995
- Color equalization method and its application to color image processingJournal of the Optical Society of America A, 1986