Bildkompressionsgerät

摘要

In a picture data processing apparatus, which is suitably applied, for instance, to a television conference system in which picture data are transmitted in the form of codes, deterioration of the picture quality is prevented even if an edge exits. In the apparatus, the presence or absence of an edge is detected for each block, and when a block having an edge is detected, a Wavelet transform is employed in transmission of picture data, instead of a discrete cosine transform. <IMAGE>