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Proceedings Paper

Robust recognition of partially occluded 3-D objects from computationally reconstructed hologram by using a spatial filtering scheme
Author(s): Seok-Chan Park; Keong-Jin Lee; Sang-Hyun Lee; Seung-Cheol Kim; Eun-Soo Kim
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Paper Abstract

A novel approach for discrimination of partially occluded 3-D target objects from reconstructed digital hologram by using a spatial filtering scheme is proposed. Because of the distance condition among the target and occluding objects in the digital hologram system, the occluding objects would directly act as some noises to the reconstructed target image as a result performance of the digital hologram based 3-D target recognition system might be severely deteriorated. When we just focuse on the occluded image for recognition, sometimes we do not know the shape exactly. But if we extract the occluding objects from the hologram pattern, it is recognized more clearly when we reconstructed. Because of the property of hologram, some pixel does not have information what we want and other pixels have it. In accordance with it, we are able to discriminate the shape of occluded object even though the part of occluded object is not brightly and clearly. In this paper, by selectively subtraction the occluding object noises from the recorded hologram pattern using a spatial filtering scheme, robust discrimination of 3-D targets from the occluding objects can be realized with this spatial filtered hologram. Thus, performance of the proposed digital hologram based 3-D target recognition system can be dramatically improved. In order to show the feasibility of the proposed method, some experiments with test objects are carried out and the results are presented.

Paper Details

Date Published: 3 February 2009
PDF: 9 pages
Proc. SPIE 7233, Practical Holography XXIII: Materials and Applications, 723313 (3 February 2009); doi: 10.1117/12.808388
Show Author Affiliations
Seok-Chan Park, Kwangwoon Univ. (Korea, Republic of)
Keong-Jin Lee, Kwangwoon Univ. (Korea, Republic of)
Sang-Hyun Lee, Kwangwoon Univ. (Korea, Republic of)
Seung-Cheol Kim, Kwangwoon Univ. (Korea, Republic of)
Eun-Soo Kim, Kwangwoon Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 7233:
Practical Holography XXIII: Materials and Applications
Hans I. Bjelkhagen; Raymond K. Kostuk, Editor(s)

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