Modified Alpha-Rooting Color Image Enhancement Method on the Two Side 2-D Quaternion Discrete Fourier Transform and the 2-D Discrete Fourier Transform
| Autor: | Aparna John, Artyom M. Grigoryan, Sos S. Agaian |
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| Rok vydání: | 2017 |
| Předmět: |
FOS: Computer and information sciences
Computer science Color image business.industry Computer Vision and Pattern Recognition (cs.CV) Computer Science - Computer Vision and Pattern Recognition ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION General Medicine Measure (mathematics) Discrete Fourier transform Image (mathematics) Alpha (programming language) Computer Science::Computer Vision and Pattern Recognition Genetic algorithm Computer vision Artificial intelligence Quaternion business Representation (mathematics) ComputingMethodologies_COMPUTERGRAPHICS |
| Zdroj: | Applied Mathematics and Sciences: An International Journal (MathSJ). 4:01-16 |
| ISSN: | 2349-6223 |
| DOI: | 10.5121/mathsj.2017.4201 |
| Popis: | Color in an image is resolved into 3 or 4 color components and 2-Dimages of these components are stored in separate channels. Most of the color image enhancement algorithms are applied channel-by-channel on each image. But such a system of color image processing is not processing the original color. When a color image is represented as a quaternion image, processing is done in original colors. This paper proposes an implementation of the quaternion approach of enhancement algorithm for enhancing color images and is referred as the modified alpha-rooting by the two-dimensional quaternion discrete Fourier transform (2-D QDFT). Enhancement results of this proposed method are compared with the channel-by-channel image enhancement by the 2-D DFT. Enhancements in color images are quantitatively measured by the color enhancement measure estimation (CEME), which allows for selecting optimum parameters for processing by the genetic algorithm. Enhancement of color images by the quaternion based method allows for obtaining images which are closer to the genuine representation of the real original color. 16 pages, 53 figures (including sub-figures) |
| Databáze: | OpenAIRE |
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