Image Enhancement Based on Adaptive Median Filter and Wallis Filter

Image enhancement has been an important technique for image analysis. The purpose of enhancement is suppressing noises and enhancing image details. However, most of algorithms only focus on the noise suppressing or detail enhancing. In this paper, an algorithm which could both suppressing noises and enhancing details through combining the adaptive median filter and Wallis filter is proposed. The adaptive median filter and Wallis filter are combined through the alternative strategy. Also, the strategy similar to the multi-scale enhancement is also performed to further enhancing the images. Experiments on various images verified that, the proposed algorithm performs effectively for both the noise suppressing and detail enhancing.