NOISE REDUCTION METHOD AND UNIT FOR AN IMAGE FRAME

摘要

Method for noise reduction in a current image frame, wherein the current image frame is a part of a sequence of image frames, comprising comparing a current pixel value of a pixel within the current image frame with a corresponding pixel value of the pixel in at least one adjacent image frame, determining a piled-up value of the current pixel value and the corresponding pixel value if a pixel difference between the current pixel value and the corresponding pixel value is below a pixel threshold, wherein the pixel threshold depends on the corresponding pixel value and /or the current pixel value. Corresponding methods and noise reduction units for block and color processing are provided as well.