Simplification of imaging system for estimating changes in image contrast due to different weighting of x-ray energy

Takumi Hotta; Katsuyuki Takagi; Takeru Goto; Akifumi Koike; Yukino Imura; Toru Aoki

doi:10.1117/12.2596422

1 September 2021 Simplification of imaging system for estimating changes in image contrast due to different weighting of x-ray energy

Takumi Hotta, Katsuyuki Takagi, Takeru Goto, Akifumi Koike, Yukino Imura, Toru Aoki

Author Affiliations +

Proceedings Volume 11838, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII; 1183813 (2021) https://doi.org/10.1117/12.2596422
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Energy weighting is an efficient technique for improving image contrast. If finally evaluating through human visual information, it is fascinating how the contrast of the image changes due to the difference in the weighting of X-ray energy. Therefore, we tried to evaluate how X-ray energy and contrast affect each other by comparing with gamma correction, which is a contrast adjustment performed in general image processing. Since the interaction in X-ray imaging is complicated, We replaced the imaging system with a simple one, and the change in the image due to the difference between energy-integrated and photon-counting detectors is represented as a tone curve. Simulation is a suitable technique for calculating the change in pixel value due to the difference in the weight of X-ray energy. Still, it requires creating a model for each imaging target. Therefore, to estimate the change more easily, we examined how to simplify the imaging system.

Conference Presentation

Citation Download Citation

Takumi Hotta, Katsuyuki Takagi, Takeru Goto, Akifumi Koike, Yukino Imura, and Toru Aoki "Simplification of imaging system for estimating changes in image contrast due to different weighting of x-ray energy", Proc. SPIE 11838, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII, 1183813 (1 September 2021); https://doi.org/10.1117/12.2596422

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