NDLI: Efficient block-based coding of noise images by combining pre-filtering and DCT

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Efficient block-based coding of noise images by combining pre-filtering and DCT

Content Provider	IEEE Xplore Digital Library
Author	Sung Deuk Kim Sung Kyu Jang Myung Jun Kim Jong Beom Ra
Copyright Year	1999
Description	Author affiliation: Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea (Sung Deuk Kim)
Abstract	A conventional image coder, such as JPEG, requires not only DCT and quantization but also additional pre-filtering under noisy environment. Since the pre-filtering removes camera noise and improves coding efficiency dramatically, its efficient implementation has been an important issue. Based on well-known noise removal techniques in image processing fields, this paper introduces an efficient scheme by adapting a noise removal procedure to block-based image coders. By using two-dimensional DCT factorization, the proposed image coder has only a modified DCT and a VLC, and performs pre-filtering and quantization simultaneously in the modified DCT operation.
Starting Page	37
Ending Page	40
File Size	443247
Page Count	4
File Format	PDF
ISBN	0780354710
DOI	10.1109/ISCAS.1999.779937
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-05-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image coding Discrete cosine transforms Wiener filter Quantization Filtering Working environment noise Cameras Computational complexity Kernel Image processing
Content Type	Text
Resource Type	Article

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