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Proceedings Paper

Glare and shadow reduction for desktop digital camera capture systems
Author(s): Thanh H. Ha; Chyuan-Tyng Wu; Peter Majewicz; Kurt R. Bengtson; Jan P. Allebach
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Paper Abstract

The quality of images of objects with significant 3D structure, captured at close range under a flash, may be substantially degraded by glare and shadow regions. In this paper, we introduce an imaging system and corresponding algorithm to address this situation. The imaging system captures three frames of the stationary scene using a single camera in a fixed position, but an illumination source in three different positions, one for each frame. The algorithm includes two processes: shadow detection and image fusion. Through shadow detection, we can locate the area of shadows. After getting the shadow maps, we generate a more complete final image by image fusion. Our experimental results show that in most cases, the shadow and glare are markedly reduced.

Paper Details

Date Published: 4 February 2013
PDF: 7 pages
Proc. SPIE 8652, Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications, 865206 (4 February 2013); doi: 10.1117/12.2006340
Show Author Affiliations
Thanh H. Ha, KLA-Tencor Corp. (United States)
Chyuan-Tyng Wu, Purdue Univ. (United States)
Peter Majewicz, Flextronics Inc. (United States)
Kurt R. Bengtson, Hewlett-Packard Co. (United States)
Jan P. Allebach, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 8652:
Color Imaging XVIII: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Alessandro Rizzi, Editor(s)

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