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- W2022030684 abstract "We present a generalized line histogram technique to compute global rib-orientation for detecting rotated lungs in chest radiographs. We use linear structuring elements, such as line seed filters, as kernels to convolve with edge images, and extract a set of lines from the posterior rib-cage. After convolving kernels in all possible orientations in the range [0, π], we measure the angle for which the line histogram has maximum magnitude. This measure provides a good approximation of the global chest rib-orientation for each lung. A chest radiograph is said to be upright if the difference between the orientation angles of both lungs with respect to the horizontal axis, is negligible. We validate our method on sets of normal and abnormal images and argue that rib orientation can be used for rotation detection in chest radiographs as aid in quality control during image acquisition, and to discard images from training and testing data sets. In our test, we achieve a maximum accuracy of 90%." @default.
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- W2022030684 date "2014-05-01" @default.
- W2022030684 modified "2023-10-16" @default.
- W2022030684 title "Rotation Detection in Chest Radiographs Based on Generalized Line Histogram of Rib-Orientations" @default.
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- W2022030684 doi "https://doi.org/10.1109/cbms.2014.56" @default.
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