NDLI: Progressive image transmission using adaptive multistage vector quantization

Content Provider	IEEE Xplore Digital Library
Author	Chok-Ki Chan Yin-Hei Chan
Copyright Year	1994
Description	Author affiliation: Dept. of Electron. Eng., City Polytech. of Hong Kong, Kowloon, Hong Kong (Chok-Ki Chan; Yin-Hei Chan)
Abstract	A new technique based on adaptive multistage vector quantization (MSVQ) using variable block sizes is proposed for progressive image transmission. The authors employ larger block sizes in the low bit rate range and the block size is gradually decreased when the bit rate is increased. Variable block size is achieved by segmenting from the largest selected block size with a quadtree data structure. The adaptive encoding scheme is also applied to increase the compression efficiency by allocating variable bit rates according to the information detail of each vector block. Classification of blocks with different information detail is achieved by recursively identifying each of the blocks into edge or shade blocks in each stage in order to obtain different classes. Experimental results shows that adaptive MSVQ achieves an excellent reconstructed image quality at rates between 0.15 and 1.0 bpp (bits per pixel).<>
Starting Page	189
Ending Page	192
File Size	339596
Page Count	4
File Format	PDF
ISBN	078031865X
DOI	10.1109/SIPNN.1994.344935
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-04-13
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image quality Image segmentation Image resolution Image communication Vector quantization Bit rate Cities and towns Data structures Computational efficiency Image storage
Content Type	Text
Resource Type	Article

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