Title :
Progressive image transmission by refining sampling lattice
Author :
Panusopone, Krit ; Rao, K.R.
Author_Institution :
Dept. of Electr. Eng., Texas Univ., Arlington, TX, USA
Abstract :
This paper applies a nonuniform sampling technique to progressive image transmission (PIT) so that it can place more attention on vital parts of the image. The system first segments an image based on a quadtree structure and the resulting variable block size data has suitable sampling lattice under a tolerable loss. With this information, the transmitter can adjust the lattice for each region matched with the desired bit rate and error. Simulation results show that low overhead and information are necessary for each stage of transmission while improved images can be reconstructed at the receiver.
Keywords :
image coding; image reconstruction; image representation; image sampling; image segmentation; quadtrees; vector quantisation; visual communication; image reconstruction; image representation; image segmentation; nonuniform sampling technique; progressive image transmission; quadtree structure; sampling lattice; simulation results; variable block size data; Approximation error; Digital images; Image communication; Image representation; Image sampling; Image storage; Lattices; Pixel; Redundancy; Spatial resolution;
Conference_Titel :
Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7646-9
DOI :
10.1109/ACSSC.1996.599156
