Performance Evaluation of Filters for Enhancement of Images in Different Application Areas
Yogendra Kumar Jain · IOSR Journal of Computer Engineering · 2013
Contrast stretching is a method to enhance the image details.Histogram equalization is one of the most common spatial domain technique used for contrast enhancement.While stretching the contrast of an image , it results in the degradation of brightness of the image.To overcome this hurdle a method known as Bi-Histogram equalization was introduced to preserve the brightness level of the output image.As the contrast enhancement enhances the image , it also enhances the noise in the signal that causes the blurrness in the output image.The proposed BHEGF method reduces this drawback and provides more accurate and realistic results.In this paper we use four different types of filters i.e. median filter , gaussian filter , average filter & motion filter and various parameters such as processing time , MSE, brightness count and PSNR are used for performance evaluation.