1. A method for masking artifacts in images, the method comprising: defining a region in at least one first image, the defined region having at least one artifact; tracking the defined region to at least one second image; and applying an error diffusion function to the defined region to mask the at least one artifact in the at least one first and second images comprising adding a masking signal to at least one block in at least one first image and at least one second image based on a block size of pixels.