With the advent of digital computers in the 1960s dawned the era of digital signal processing and digital image processing. Processing in the early days was off line since the computers were not powerful enough. With the introduction of PCs in the 1980s, the field of digital image processing started to mature. Now that ultrahigh-speed PCs with almost unlimited internal memory are in the market at affordable price ranges, digital image processing is a household name.
Digital image processing refers to any computer method—software or hardware—by which the properties of an image are altered to satisfy certain objectives. Obviously, the original image must be in digital format so that it can be manipulated using ...