matlab program for JPEG coding
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The aim of the most common mode of JPEG is to provide the best possible quality at a given compression ratio. Therefore the original data must be brought into a suitable form allowing to differentiate between important (relevant) and less important (irrelevant) contents.
The JPEG standard specifies a multi-level coding process:
1. Image Preparation (Separation into Components)
The image will be separated into components, which are adapted to the different quality requirements.