Image processing method and image processing device

An image processing device, comprising:

• a pixel-wise comparing module, configured to compare each of a plurality of input pixels in an input image to a corresponding buffered pixel in a buffered image, and to compute a difference value between an input pixel value of the input pixel and a buffered pixel value of the buffered pixel, wherein the input pixel and the buffered pixel correspond in position to each other in the input image and the buffered image;
• a pixel-wise blending module, configured to generate a blended image based on the input pixel values and the corresponding difference values;
• and
• a pixel-wise updating module, configured to determine whether a criterion associated with the difference value is met, for each of the difference values;
• wherein the pixel-wise updating module is further configured to update, for each of the buffered pixels in the buffered image, the buffered pixel value based on the corresponding input pixel value in response to the criterion being met, and to keep the buffered pixel value unchanged in response to the criterion not being met.