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- W2889894652 abstract "The exposure index (EI) prevents systematic errors such as excessive or under-exposure by indicating the approximate value of the absorbed dose of the detector. We propose an EI measurement method with an object-based ROI except collimator and background region to measure more reliable EI values in X-ray images from digital flat-panel detectors. The boundary between the collimator and the background region has strong edges and linear components. Therefore, the ROI is detected by using simple and fast algorithms such as the canny edge detector, probabilistic Hough transform, and convex hull algorithm. The difference in the average pixel values between the ground truth (GT) values and the proposed method is approximately 5.13 (±1%)." @default.
- W2889894652 created "2018-09-27" @default.
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- W2889894652 date "2018-09-30" @default.
- W2889894652 modified "2023-09-23" @default.
- W2889894652 title "Object-based Exposure Index Measurement Method in X-ray Image" @default.
- W2889894652 doi "https://doi.org/10.5302/j.icros.2018.18.0114" @default.
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