Computational methods for shape restoration of buried objects in Compton backscatter imaging

Journal Article · Mon Jan 01 00:00:00 EST 1996 · Nuclear Science and Engineering

OSTI ID:201334

Watanabe, Yoichi; Monroe, J; Keshavmurthy, S; Jacobs, A M; Dugan, E T ^[1]

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1. Univ. of Florida, Gainesville, FL (United States). Dept. of Nuclear Engineering Sciences

Image restoration techniques are studied for Compton backscatter imaging as applied to identification of a land mine buried in soil. Mathematical methods are developed to restore images, which include artifacts due to photon noise, soil surface irregularity, and vertical motion of the imaging system. The image restoration is formulated as an inverse photon transport problem. The forward photon transport is modeled by using a two-collision response function. The inverse problem then is solved by applying an iterative minimization algorithm, resulting in an estimation of characteristic parameters of objects. Mathematical relations among detector responses are derived by experimentally analyzing the detector response characteristics when there are soil surface irregularity and vertical motion of the imaging system. These are used to remove the artifacts from the images. The method successfully restores the geometrical feature of the object under simulated battlefield imaging conditions.

• OSTI ID: 201334
• Journal Information: Nuclear Science and Engineering, Vol. 122, Issue 1; Other Information: PBD: Jan 1996
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
99 MATHEMATICS
COMPUTERS
INFORMATION SCIENCE
MANAGEMENT
LAW
MISCELLANEOUS
IMAGE PROCESSING
ALGORITHMS
COMPTON SCATTERING TOMOGRAPHY
WEAPONS
DETECTION
CALCULATION METHODS
ITERATIVE METHODS
WARFARE