VERFAHREN ZUR VERRINGERUNG DES QUANTISIERUNGSFEHLERS IN HIERARCHISCHEN ZERLEGUNGS- UND WIEDERAUFBAUSCHEMEN.

摘要

Methods to reduce the quantization error in the higher spatial resolution digital image signals of a hierarchical decomposition and reconstruction scheme are disclosed. The quantization errors in the high spatial resolution digital image signals are reduced by modifying the low spatial resolution digital image signals in a way that can produce only small errors in the low spatial resolution digital image signal. The small errors in the low spatial resolution digital image signal are reduced by utilizing an improved reconstruction method.