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Title: Single image defocus map estimation using local contrast prior
Authors: Tai, Y.-W.
Brown, M.S. 
Issue Date: 2009
Citation: Tai, Y.-W.,Brown, M.S. (2009). Single image defocus map estimation using local contrast prior. Proceedings - International Conference on Image Processing, ICIP : 1797-1800. ScholarBank@NUS Repository.
Abstract: Image defocus estimation is useful for several applications including deblurring, blur magnification, measuring image quality, and depth of field segmentation. In this paper, we present a simple yet effective approach for estimating a defocus blur map based on the relationship of the contrast to the image gradient in a local image region. We call this relationship the local contrast prior. The advantage of our approach is that it does not require filter banks or frequency decomposition of the input image; instead we only need to compare local gradient profiles with the local contrast. We discuss the idea behind the local contrast prior and demonstrate its effectiveness on a variety of experiments. ©2009 IEEE.
Source Title: Proceedings - International Conference on Image Processing, ICIP
ISBN: 9781424456543
ISSN: 15224880
DOI: 10.1109/ICIP.2009.5414620
Appears in Collections:Staff Publications

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