Abstract
Eighteen percent of the world’s coral reefs are located in Indonesia. Currently, thirty percent of coral reefs in Indonesia are in poor condition. One indication of a healthy coral reef is given by its color. However, there is a difficulty in identifying the original color of a coral reef. When a coral reef is taken out of water, the color becomes different from its original color. This paper proposes a polynomial equation approach to enhance the color of a coral reef by returning the constancy of the basic colors of Red, Green, and Blue (RGB). The quality of color enhancement result is measured by using Peak Signal to Noise Ratio (PSNR). Furthermore, by applying polynomial equation the average value of Peak Signal to Noise Ratio is 33.94, meaning that the color of coral reef is visually enhanced. It can be concluded that polynomial equation can be used to enhance underwater coral reef color image.
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