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. Author manuscript; available in PMC: 2010 Oct 1.
Published in final edited form as: Osteoarthritis Cartilage. 2009 Apr 22;17(10):1307–1312. doi: 10.1016/j.joca.2009.04.010

Fig. 2.

Fig. 2

Summary of the X-ray data processing: Film X-ray acquisition, digitization of the film X-rays, automatic joint detection and separation of the joint area from the image, computing image features and then classifying each image based on the feature values.