X-RAY IMAGE ENHANCEMENT USING RETINEX ALGORITHM BASED ON COLOR RESTORATION

In this research, clarity of medical x-ray images has been increased, which is difficult because of the limited range of intensity. The proposed algorithm based on the technique of improving contrast using Retinex Algorithm based Color Restoration (RACR). The RACR method of enhancement compared with several ways as Multi-Scale Retinex Improvement for Nighttime Image Enhancement (MRINE), contrast enhancement approach for dark images with non-uniform illumination (CEDNI), Multi-Scale Retinex Algorithm with Color Restoration (MSRCR) and Histogram Equalization (HE). The comparison based on Entropy and histogram analysis. The results showed the proposed method succeeded in increasing the contrast of x-ray images compared to other methods.