There are times when it is desired to knockout the background from an image to increase its aesthetic value. The main difficulty faced while trying to separate an image from its background is that oftentimes there's a very blurred line of pixels that separates main image from its background and it becomes really difficult to declare whether a pixel belongs to the foreground or background. Using Background Eraser Tool to remove photo background Using Channel Mask to remove background of an image Removing background with Magnetic Lasso Tool Removing background with Pen Tool