تحسين الصور الملونة الملتقطة تحت الماء باستخدام تقنية تمديد التباين بالاعتماد على توازن اللون الابيض وتحويل YIQ

Abstract

In this study a new algorithm has been suggested to enhance images capture underwater by using Contrast Stretching technique and YIQ transform. White balance has been applier on the RGB Components, Then enhanced lighting using function sigmoid, the lightness componential and the chromatic component have been processing alone after white balance (w) is applied and Contrast Stretching (CS) for RGB Components, and to know the efficiency this method it account of the quality of those images by using the scale (μ ,σ), and after comparing them with method Contrast Stretching for Components RGB, and the method Contrast Stretching on those Components after a white balance as well as compared to the same method without work for white color balance. Results showed that the suggested algorithm gives good results in light enhancement and contrast at taked the white balance if we transform to YIQ or not.