Jackson Walker, LLP
Methods for compressing and re-constructing a color image in a computer system
 We discloses an efficient method for compressing a color image, visual block pattern truncation coding (VBPTC), in which the conventional block truncation coding (BTC) serves to encode an original image. This method defines the edge block according to human visual perception. If the difference between the two quantized values of BTC in a block is larger than a threshold which is defined by visual characteristics, the block will be identified as an edge block. In an edge block, the bitmap is adapted to compute block gradient orientation and to match the block pattern. 
National Science Council
G
G06T
inventional
Yuan-Chen Po-Cheng Yung-Pin Hsu-Tung Liang-Gee
Liu Wu Lee Chen Chen