Telecommunications and Radio Engineering
年間 12 号発行
ISSN 印刷: 0040-2508
ISSN オンライン: 1943-6009
SJR:
0.185
SNIP:
0.268
CiteScore™::
1.5
H-Index:
22
Indexed in
Efficient Scalable DCT Block-Based Image Coder with Compression of Signs of DCT Coefficients
巻 67,
発行 5, 2008,
pp. 391-412
DOI: 10.1615/TelecomRadEng.v67.i5.20
要約
This paper presents an efficient DCT based method for image compression. The method uses a sophisticated bit-plane coding of quantized DCT coefficients and provides both spatial and quality/speed scalability. A fast post-filtering aimed for deblocking and facilitation of Region of Interest (ROI) coding is also described. Utilizing the coding of signs of DCT coefficients further improves coding efficiency of the proposed coder. The coder can be used for lossy image compression as well as to further lossless compression of already compressed JPEG images whereas its performance is close to that one of JPEG2000.
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