The Despeckle Method removes the color noise from a 1-bit image. It looks for an average color value inside the square area that you specify near the pixel and replaces the pixel with this value.
The GeomDespeckle Method is used to reduce speckle noise from an image by using the Crimmins algorithm. It reduces the speckle index of an image by sending the image through a geometric filter, which uses the complementary hulling technique. The method has the effect of reducing the undesired speckle noise while preserving the edges of the original image. It can be applied only to 8bit grayscale images with one channel.
