DYNAMIC RANGE ENHANCEMENT OF CONSUMER DIGITAL CAMERAACQUIRED HIP PROSTHESIS X-RAY IMAGES

摘要

The X-ray film image is the main medical diagnosis tool inrnthe evaluation of the fit of the hip prostheses inserted in totalrnhip arthroplasty (THA) procedures. In the design of arncomputer-aided diagnosis tool, one of the most important operationsrnis the digital capture of the film images. This contributionrninvestigates the use of a consumer-grade digital stillrncamera as a digital acquisition tool for hip prosthesis X-rayrnimages. We propose and discuss two methods for the increasernof the dynamic range and contrast of the digital image, usingrnsingle or multiple pictures of the radiological film. The prosthesisrnstem is segmented from the resulting digital images enablingrnthe measurement of basic clinical parameters (stem fitrnwithin the medular channel, Gruen areas identification).