Improved Adaptive Median Filtering for Structured Light Image Denoising

In order to overcome the shortcomings of standard median filtering and adaptive median filtering in the denoising of structured light image, an improved adaptive median filtering method is proposed. The method determines the true noise point and the local noise density through two noise detections. Moreover, the size of the filtering window is selected according to the density, and the detected noise points are filtered by using the proposed method. The experimental results show that the improved adaptive median filtering can effectively protect the image details when noise is removed. And the proposed method can provide better filtering performance than standard median filtering and adaptive median filtering.