NDLI: Shape from Focus using Color Segmentation and Bilateral Filter

Content Provider	IEEE Xplore Digital Library
Author	Shoji, H. Shirai, K. Ikehara, M.
Copyright Year	2006
Description	Author affiliation: Fac. of Sci. & Technol., Keio Univ., Kanagawa (Shoji, H.; Shirai, K.; Ikehara, M.)
Abstract	In this paper, we describe a new method for shape from focus using a set of the color segmentation and the bilateral filtering. The shape from focus estimates the geometrical shape of objects from the defocus level of images taken with different focal state. However, the conventional methods tend to fail in the shape estimation around the edge parts of objects and thin texture areas. To address the problems, we use the color segmentation in order to merge such areas by color, and then we interpolate the shape of lost part at each segment. The bilateral smoothing filter is used as the noise suppressor to improve the segmentation accuracy and also this bilateral filter is used to obtain the detail of textures, in other words, high frequency components of the focus measure. In addition, we also acquire the All-in-Focus image by this algorithm and the depth estimation is complemented by this image. By using this method, the lossless and noiseless shape of the object is obtained
Starting Page	566
Ending Page	571
File Size	552413
Page Count	6
File Format	PDF
ISBN	1424435343
DOI	10.1109/DSPWS.2006.265487
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Shape Image segmentation Focusing Filters Colored noise Noise shaping Filtering State estimation Smoothing methods Frequency All-In-Focus image shape from focus color segmentation bi-lateral filter focus measure shape recovery
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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