| Improvement of color video demosaicking in temporal domain. | |
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MedLine Citation:
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PMID: 17022276 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Color demosaicking is critical to the image quality of digital still and video cameras that use a single-sensor array. Limited by the mosaic sampling pattern of the color filter array (CFA), color artifacts may occur in a demosaicked image in areas of high-frequency and/or sharp color transition structures. However, a color digital video camera captures a sequence of mosaic images and the temporal dimension of the color signals provides a rich source of information about the scene via camera and object motions. This paper proposes an inter-frame demosaicking approach to take advantage of all three forms of pixel correlations: spatial, spectral, and temporal. By motion estimation and statistical data fusion between adjacent mosaic frames, the new approach can remove much of the color artifacts that survive intra-frame demosaicking and also improve tone reproduction accuracy. Empirical results show that the proposed inter-frame demosaicking approach consistently outperforms its intra-frame counterparts both in peak signal-to-noise measure and subjective visual quality. |
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Authors:
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Xiaolin Wu; Lei Zhang |
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Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: IEEE transactions on image processing : a publication of the IEEE Signal Processing Society Volume: 15 ISSN: 1057-7149 ISO Abbreviation: IEEE Trans Image Process Publication Date: 2006 Oct |
Date Detail:
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Created Date: 2006-10-06 Completed Date: 2006-11-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9886191 Medline TA: IEEE Trans Image Process Country: United States |
Other Details:
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Languages: eng Pagination: 3138-51 Citation Subset: IM |
Affiliation:
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Department of Electrical and Computer Engineering, McMaster University, Hamilton, Canada. xwu@mail.ece.mcmaster.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms* Color* Colorimetry / methods* Image Enhancement / methods* Image Interpretation, Computer-Assisted / methods* Information Storage and Retrieval / methods* Video Recording / methods* |
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