Digital images are often corrupted by different noises. These noises can be removed by designing an efficient filter. Based upon the specified operation the pixels are classified. Absolute Difference Based Progressive Switching Median Filter (ADBPSMF) outperforms all other filter for the removal of impulse noise from corrupted images. This filter performs two basic operations for efficient nois...

In this work, we propose a new median-finding algorithm which computes the median value in an input list of integers on-the-fly, without any data-sorting operations. We present a complete digital CMOS implementation, associated timing diagrams, and a formal mathematical proof, which show the overall average number of clock cycles for median-finding to be linearly proportional to the input lengt...

The median filter is an effective device for the removal of impulse-based noise on video signals. This is due to the partial averaging effect of the median filter and its biasing of the input stream, rather than straight mathematical averaging. In this paper, we describe three realizations of median filter, built into as few as one Field programmable logic device, which is capable of processing...

In this paper, we present a median filter which uses an adaptive variable block. The two dimension median filter is a nonlinear digital image filtering method, which generally used to remove unwanted impulse noise. The median filter is normally used in the step of pre-processing to improve the performance. To assess performance of the proposed method, we vary noise level and block size. Experim...