Open AccessEnhancement of laser CT image contrast by correction of artifacts due to surface effects
Author(s) -
Yuuki Watanabe,
Tetsuya Yuasa,
Takao Akatsuka,
B. Devaraj,
Humio Inaba
Publication year - 1998
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.3.000104
Subject(s) - optics , attenuation , contrast (vision) , projection (relational algebra) , laser , tomographic reconstruction , iterative reconstruction , attenuation coefficient , materials science , image quality , sample (material) , tomography , surface reconstruction , surface (topology) , physics , computer vision , computer science , image (mathematics) , mathematics , geometry , algorithm , thermodynamics
Mismatched boundary conditions such as air-sample interface introduce artifacts that obscure internal information in the reconstructed laser computed tomographic (CT) images. Here, we demonstrate enhancement of target structure in the laser CT images by correcting the projection data using the experimentally determined angle dependence of sample surface attenuation. The images reconstructed with the corrected projection data are shown to have improved image contrast. Our proposed correction to laser CT reconstruction is effective for visualizing internal structure with small variations in the attenuation coefficients that would otherwise be masked by the dominant surface attenuation.