Title :
An edge modeling and reconstruction approach to subband image coding
Author :
Eddins, Steven L. ; Smith, Mark J T
Author_Institution :
Sch. of Electr. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A new multirate method is presented for very-low-bit-rate image coding. Some preliminary coding results are shown and compared with conventional subband coding using adaptive differential pulse-code modulation (ADPCM). Based on experiments performed on a test pattern, the new approach performs significantly better than conventional systems. By using edge modeling and deconvolution concepts, the new method avoids edge blurring and ringing (oscillatory distortion) near object boundaries. Other subband coding schemes suffer from both problems at low bit rates
Keywords :
computerised picture processing; data compression; encoding; pulse-code modulation; ADPCM; adaptive differential pulse-code modulation; coding results; deconvolution; edge modeling; image compression; low bit rate image coding; multirate method; object boundaries; subband coding; subband coding schemes; subband image coding; Bit rate; Filter bank; Frequency; Image analysis; Image coding; Image reconstruction; Performance evaluation; Pixel; Quantization; System testing;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100278
