Hue-Preserving Saturation Improvement in RGB Color Cube
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| Title: | Hue-Preserving Saturation Improvement in RGB Color Cube |
|---|---|
| Authors: | Kohei Inoue, Minyao Jiang, Kenji Hara |
| Source: | Journal of Imaging, Vol 7, Iss 150, p 150 (2021) |
| Publisher Information: | MDPI AG |
| Publication Year: | 2021 |
| Collection: | Directory of Open Access Journals: DOAJ Articles |
| Subject Terms: | color image enhancement, hue preservation, saturation improvement, gamut problem, histogram equalization, histogram specification, Photography, TR1-1050, Computer applications to medicine. Medical informatics, R858-859.7, Electronic computers. Computer science, QA75.5-76.95 |
| Description: | This paper proposes a method for improving saturation in the context of hue-preserving color image enhancement. The proposed method handles colors in an RGB color space, which has the form of a cube, and enhances the contrast of a given image by histogram manipulation, such as histogram equalization and histogram specification, of the intensity image. Then, the color corresponding to a target intensity is determined in a hue-preserving manner, where a gamut problem should be taken into account. We first project any color onto a surface in the RGB color space, which bisects the RGB color cube, to increase the saturation without a gamut problem. Then, we adjust the intensity of the saturation-enhanced color to the target intensity given by the histogram manipulation. The experimental results demonstrate that the proposed method achieves higher saturation than that given by related methods for hue-preserving color image enhancement. |
| Document Type: | article in journal/newspaper |
| Language: | English |
| Relation: | https://www.mdpi.com/2313-433X/7/8/150; https://doaj.org/toc/2313-433X; https://doaj.org/article/15d553e809db40ecb7caba7f5a3c70b6 |
| DOI: | 10.3390/jimaging7080150 |
| Availability: | https://doi.org/10.3390/jimaging7080150 https://doaj.org/article/15d553e809db40ecb7caba7f5a3c70b6 |
| Accession Number: | edsbas.B53938DA |
| Database: | BASE |
Nájsť tento článok vo Web of Science | Abstract: | This paper proposes a method for improving saturation in the context of hue-preserving color image enhancement. The proposed method handles colors in an RGB color space, which has the form of a cube, and enhances the contrast of a given image by histogram manipulation, such as histogram equalization and histogram specification, of the intensity image. Then, the color corresponding to a target intensity is determined in a hue-preserving manner, where a gamut problem should be taken into account. We first project any color onto a surface in the RGB color space, which bisects the RGB color cube, to increase the saturation without a gamut problem. Then, we adjust the intensity of the saturation-enhanced color to the target intensity given by the histogram manipulation. The experimental results demonstrate that the proposed method achieves higher saturation than that given by related methods for hue-preserving color image enhancement. |
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| DOI: | 10.3390/jimaging7080150 |