Image Enhancement Algorithm based on Improved Fuzzy Filter

Due to dynamic range compression and contrast enhancement realized simultaneously in traditional image enhancement algorithm based on frequency domain, which cause the low contrast degree, an improved image enhancement algorithm based on fuzzy filter is proposed in this paper. According to subjective feeling of the human visual system to light luminance, the image is processed with the global brightness transform. And the image with the global low contrast degree and the poor effect of edge parts has sound reinforcing effect. Furthermore, the edge contrast is enhanced, even the brightness contrast and information can also effectively improve. Experimental results demonstrate that the algorithm has got good enhancement effect.