Method for image data reduction by fractal image encoding

Abstract

Abstract The method involves reducing luminance and/or colour data of a digital image signal by means of fractal image coding, at which each image is subdivided into range blocks with respectively n*n image points. A domain block is searched for each range block, which is mappable onto the range block under application of a transformation function with most little possible deviation. The domain blocks have a larger size than the range blocks. Information about the transformation functions is transferred, from which image data is recovered at the receiving end in an iterative process. A digital search tree strategy is used to search for the mapping of domain blocks onto range blocks.

Inventors

• 👤 Achim Ibenthal
• 👤 Detlef c/o Philips Patentverwaltung Gmbh Götting
• 👤 Rolf-Rainer Prof. Dr.-Ing. Grigat

Bibliographic Details