Journal of the Optical Society of Korea

  • 제1권1호
  • /
  • Pages.60-64
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  • 1997
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Automatic detection of the lung orientation in digital PA chest radiographs

  • 투고 : 1997.01.31
  • 발행 : 1997.03.01
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초록

An image processing algorithm is presented that can identify the orientation as well as the left/right side (parity) of the digitized radiographs. The orientation was found by computing the mean square deviation between the sampled gray values along the center and their best-fit linear regression relations. The parity was determined by comparing the area difference between two thresholded images of the left and the right side around the heart, which is assumed to be around the center of the image. This method was tested with 86 images with their orientations intentionally rotated. The rotation was limited to multiples of 90 degrees, as this was the way the rotation is most likely to happen in the clinical environment. We obtained positive responses for 85 out of 86 images subject to the screening.

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참고문헌

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피인용 문헌

  1. Robust Learning-Based Parsing and Annotation of Medical Radiographs vol.30, pp.2, 2011, https://doi.org/10.1109/TMI.2010.2077740