A 2-D orientation-adaptive prediction filter in lifting structures for image coding

Date
2006
Advisor
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Source Title
IEEE Transactions on Image Processing
Print ISSN
1057-7149
Electronic ISSN
1941-0042
Publisher
Institute of Electrical and Electronics Engineers
Volume
15
Issue
1
Pages
106 - 111
Language
English
Type
Article
Journal Title
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Volume Title
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Abstract

Lifting-style implementations of wavelets are widely used in image coders. A two-dimensional (2-D) edge adaptive lifting structure, which is similar to Daubechies 5/3 wavelet, is presented. The 2-D prediction filter predicts the value of the next polyphase component according to an edge orientation estimator of the image. Consequently, the prediction domain is allowed to rotate ±45° in regions with diagonal gradient. The gradient estimator is computationally inexpensive with additional costs of only six subtractions per lifting instruction, and no multiplications are required.

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Book Title
Keywords
Adaptive wavelet transform, Image coding, Orientation adaptive lifting
Citation
Published Version (Please cite this version)