IMAGE CODING AND DECODING METHOD

摘要

There is provided and image coding an decoding method capable of providing a high compression rate and a high-speed coding. The image coding method includes the steps of: dividing an input image into a plurality of images through a sub-sampling; calculating a difference value between a previous pixel and a first divided image of the divided images, and calculating difference values between the first divided image and each of the remaining divided images; and coding the calculated difference values. Dictionary based coding, variable length coding or a combination thereof are used.