Matching pursuits video coding: dictionaries and fast implementation
نویسندگان
چکیده
منابع مشابه
Matching pursuits video coding: Dictionaries and fast implementation
Matching pursuits over a basis of separable Gabor functions has been demonstrated to outperform DCT methods for displaced frame difference coding for video compression. Unfortunately, apart from very low bit-rate applications, the algorithm involves an extremely high computational load. This paper contains original contribution to the issues of dictionary selection and fast implementation for m...
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Matching pursuits is a dictionary-based coding method, which has recently been demonstrated to outperform standard techniques, such as H.263, at low bit rate video compression. Unfortunately, the method involves an extremely high computational cost, compared to the DCT-based H.263. The contribution of this paper relies on reporting three new dictionaries for matching pursuits video coding, whos...
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\Matching Pursuits" is a signal expansion technique whose e ciency for video coding has already been demonstrated in the MPEG-4 community. In this paper, we foccus our attention on some aspects of the algorithm. Firstly, the relevance of the orthogonalization of the signal expansion is investigated. Secondly, a subband dictionary is proposed as an alternative to the Gabor dictionary, used up to...
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This paper presents a fast matching pursuits algorithm. In addition to a fast implementation, the algorithm also allows the ef ic ient use of non-separable dictionary basis functions. The use of non-separable components allows basis functions which provide a better match t o diagonally orientated image features. In order to demonstrate the proposed method, a simple dictionary is developed and u...
متن کاملVideo Coding using a Fast Non-Separable Matching Pursuits Algorithm
This paper presents a fast matching pursuits algorithm. In addition to a fast implementation, the algorithm also allows the ef ic ient use of non-separable dictionary basis functions. The use of non-separable components allows basis functions which provide a better match t o diagonally orientated image features. In order to demonstrate the proposed method, a simple dictionary is developed and u...
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ژورنال
عنوان ژورنال: IEEE Transactions on Circuits and Systems for Video Technology
سال: 2000
ISSN: 1051-8215
DOI: 10.1109/76.875515