Abstract
A new block-adaptive bit assignment technique is proposed for the efficient compression of digital images. In picture coding technology for storage media, the data rate, which depends on picture contents, must be controlled. In this method, a proper parameter is selected that gives changes in the compressed data rate and controls it accurately. The method has been implemented with a relatively simple hardware by quantizing the block information which represents the activity of the block. Application to A2PS-DCT (Adaptive Assignment Coding with Patterns and Step-Sizes for DCT) which is a compression technique for digital VTRs is also described. Computer simulations show that the reconstructed picture quality is acceptable.
