Efficient GPU-based implementation of the median filter based on a multi-pixel-per-thread framework

Median filtering has become a ubiquitous smoothing tool for image denoising tasks, with its complexity generally determined by the median algorithm used (usually on the order of O(n log(n)) when computing the median of n elements). Most algorithms were formulated for scalar single processor computers, with few of them successfully adapted and implemented for computers with a parallel architecture. However, the redundancy for processing...