Colormetric Experiments on Aquatic Organisms

The analysis of fish skin color in time lapse experiments is a wide field, since the color changes could be affected by different causes. The classical approach uses single point measurement in CIEL*a*b* color space. On the other hand the image acquisition by digital cameras allows to evaluate spatial statistic, in RGB color space. The reliability of the camera color accuracy as well as the software and method description for the automatic color evaluation, is of the concern of this article. Various fish species were subjected of the test. We performed transformations to other color space and using multivariate data statistics, namely principal component analysis, the relevant color space is seleted. The presented software solutions are available at http://www.auc.cz/software/.