| Paper Abstract and Keywords |
| Presentation |
2026-10-09 15:20
A Proposal of Decolorization Method Using Principal Component Analysis for Color Images
Hayate Shigeoka, Ayaka Fujita, Noritake Noriaki (Yamaguchi Univ.) |
| Abstract |
(in Japanese) |
(See Japanese page) |
| (in English) |
When color images are converted to grayscale images, color combinations that are easily distinguishable in the color image may be difficult to discriminate in a grayscale image represented by luminance components. For this reason, various color to grayscale conversion methods have been proposed. However, these methods have several problems, such as a loss of the original image's visual appearance, high computational cost, and a decline in image quality due to excessive enhancement for color discrimination. To address these problems, we propose a fast and effective color to grayscale conversion method. In the proposed method, a corrected luminance is obtained by adding values for color correction to the luminance value of the original image. The values for color correction are calculated by multiplying color information lost in luminance conversion, scores obtained by performing principal component analysis (PCA) on a chromaticity coordinate, and a parameter based on pixel value differences of the original image. In the experiments, we demonstrate the effectiveness of the proposed method through qualitative and quantitative evaluations. |
| Keyword |
(in Japanese) |
(See Japanese page) |
| (in English) |
Color to grayscale conversion / PCA / / / / / / |
| Reference Info. |
ITE Tech. Rep. |
| Paper # |
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| Date of Issue |
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| ISSN |
Online edition: ISSN 2424-1970 |
| Download PDF |
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| Conference Information |
| Committee |
IEICE-SIS BCT |
| Conference Date |
2026-10-08 - 2026-10-09 |
| Place (in Japanese) |
(See Japanese page) |
| Place (in English) |
Kagoshima Univ. |
| Topics (in Japanese) |
(See Japanese page) |
| Topics (in English) |
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| Paper Information |
| Registration To |
IEICE-SIS |
| Conference Code |
2026-10-SIS-BCT |
| Language |
Japanese |
| Title (in Japanese) |
(See Japanese page) |
| Sub Title (in Japanese) |
(See Japanese page) |
| Title (in English) |
A Proposal of Decolorization Method Using Principal Component Analysis for Color Images |
| Sub Title (in English) |
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| Keyword(1) |
Color to grayscale conversion |
| Keyword(2) |
PCA |
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| 1st Author's Name |
Hayate Shigeoka |
| 1st Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
| 2nd Author's Name |
Ayaka Fujita |
| 2nd Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
| 3rd Author's Name |
Noritake Noriaki |
| 3rd Author's Affiliation |
Yamaguchi University (Yamaguchi Univ.) |
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| Speaker |
Author-1 |
| Date Time |
2026-10-09 15:20:00 |
| Presentation Time |
20 minutes |
| Registration for |
IEICE-SIS |
| Paper # |
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| Volume (vol) |
vol.50 |
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