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Dive into the research topics where Michael K. Rogers is active.

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Featured researches published by Michael K. Rogers.


Medical Imaging 2004: Physics of Medical Imaging | 2004

Fully automatic and reference-marker-free image stitching method for full-spine and full-leg imaging with computed radiography

Xiaohui Wang; David H. Foos; James Doran; Michael K. Rogers

Full-leg and full-spine imaging with standard computed radiography (CR) systems requires several cassettes/storage phosphor screens to be placed in a staggered arrangement and exposed simultaneously to achieve an increased imaging area. A method has been developed that can automatically and accurately stitch the acquired sub-images without relying on any external reference markers. It can detect and correct the order, orientation, and overlap arrangement of the subimages for stitching. The automatic determination of the order, orientation, and overlap arrangement of the sub-images consists of (1) constructing a hypothesis list that includes all cassette/screen arrangements, (2) refining hypotheses based on a set of rules derived from imaging physics, (3) correlating each consecutive sub-image pair in each hypothesis and establishing an overall figure-of-merit, (4) selecting the hypothesis of maximum figure-of-merit. The stitching process requires the CR reader to over scan each CR screen so that the screen edges are completely visible in the acquired sub-images. The rotational displacement and vertical displacement between two consecutive sub-images are calculated by matching the orientation and location of the screen edge in the front image and its corresponding shadow in the back image. The horizontal displacement is estimated by maximizing the correlation function between the two image sections in the overlap region. Accordingly, the two images are stitched together. This process is repeated for the newly stitched composite image and the next consecutive sub-image until a full-image composite is created. The method has been evaluated in both phantom experiments and clinical studies. The standard deviation of image misregistration is below one image pixel.


Archive | 2001

Method for stitching partial radiation images to reconstruct a full image

Xiaohui Wang; David H. Foos; James Doran; Michael K. Rogers


Archive | 1996

Remote health care information input apparatus

Eric L. Schmitt; Michael K. Rogers


Archive | 1999

CR reader with vertical scanning

Douglas Oliver Hall; Michael K. Rogers; Michael J. Poccia


Archive | 1995

Storage phosphor reader calibration technique

Michael K. Rogers; Robert W Apps; Barry H. Keys


Archive | 1997

Storage phosphor reader using bar code for cassette extraction and alignment

David K Bischoff; Michael K. Rogers


Archive | 2003

Collector design for computed radiography

John Claude Boutet; Michael Bernard Brandt; Andrew M. Dziel; Anna L. Hrycin; James Robert Kircher; Christopher M. Muir; Michael K. Rogers; Thomas S. Albrecht


Archive | 1992

Storage phosphur size compensation system

Michael K. Rogers; Sreeram Dhurjaty


Archive | 2004

Light collector for computed radiography

Thomas S. Albrecht; John Claude Boutet; Michael Bernard Brandt; Andrew M. Dziel; Anna L. Hrycin; James Robert Kircher; Christopher M. Muir; Michael K. Rogers


Archive | 2002

Verfahren zum Zusammenflicken von Strahlungs-Teilbildern zwecks Erzeugung eines ganzen Bildes

James Doran; David H. Foos; Michael K. Rogers; Xiaohui Wang

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