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Proceedings Paper

Approximating shape from focus by averaging filter
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Paper Abstract

The technique to estimate the depth and 3D shape of an object from the images of the same sample obtained at different focus settings is called shape from focus (SFF). Conventional SFF methods sum up the focus values within a small window of each pixel in the image. It produces a surface distortion effect, and an inaccurate depth map is obtained. In this paper, a fast and accurate SFF method based on averaging filter is proposed. We suggest that instead of averaging focus values, averaging depth values produces more accurate depth map. The experimental results demonstrate the effectiveness and the efficiency of the proposed method in comparison to the conventional methods.

Paper Details

Date Published: 2 September 2009
PDF: 9 pages
Proc. SPIE 7443, Applications of Digital Image Processing XXXII, 744320 (2 September 2009); doi: 10.1117/12.827021
Show Author Affiliations
Seong-O Shim, Gwangju Institute of Science and Technology (Korea, Republic of)
Tae-Sun Choi, Gwangju Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 7443:
Applications of Digital Image Processing XXXII
Andrew G. Tescher, Editor(s)

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