Scale-Space and Edge Detection Using Anisotropic Diffusion
IEEE Transactions on Pattern Analysis and Machine Intelligence
Use of the Hough transformation to detect lines and curves in pictures
Communications of the ACM
Digital Image Processing (3rd Edition)
Digital Image Processing (3rd Edition)
Development of a joint space width measurement method based on radiographic hand images
Computers in Biology and Medicine
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This paper presents the development of a computer-aided image management tool, named CAIMT, used for patient setup error measurement in radiation treatment planning. The CAIMT incorporates user interaction to facilitate contour detection from both portal film and simulation film. The detected contours were then used as features for image registration through application of the generalized Hough transform (GHT). Positioning error was measured when the optimal registration was achieved. The CAIMT has been applied to register the image pairs of a rando^T^M phantom and five real subjects, in order to evaluate its reliability and stability. The promising results suggest that the CAIMT can assist radiotherapists to align the simulation film and the portal film precisely and steadily and therefore adjust patient positioning to the optimum in a more efficient way.