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2 Journal of Theoretical and Applied Computer Science

2 2015

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Color image reconstruction from Charlier moments

Zhang X., Liao S.

Journal of Theoretical and Applied Computer Science

2015

Vol. 9, nr 2

3--13

In this research, we conducted a study on Charlier polynomials and discrete orthogonal Charlier moments. With the three channel method, we have carried out the color image reconstructions from Charlier moments with satisfied results. Our experimental results show that the color images can be precisely reconstructed in each of three primary color channels individually. We conclude that the moment methods developed for gray-level images can be applied in color image analysis.

Color image analysis via Racah moments

Wu Y., Liao S.

Journal of Theoretical and Applied Computer Science

2015

Vol. 9, nr 4

8--18

In this research, Racah moments color image descriptors are investigated. Channels separation for color images were involved in RGB color space, and Racah moments from each channel were computed individually. In experiments, we have performed the color image reconstructions from different color channels and various orders of Racah moments. Our experimental results have demonstrated that, by applying Racah moments, color images can be completely reconstructed without any information loss. We have also discovered that the individual set of Racah moments will uniquely describe the color image features, while the lower and higher orders of Racah moments will preserve more of features from the bottom right and top left regions of a color image, respectively.