Two Ridge Extraction Methods for Portal Imaging
نویسنده
چکیده
In this paper an existing ridge detector based on the Hessian tensor and a new one based on the structure tensor are evaluated for use in portal/simulator imaging. Tensor smoothing is introduced as a scaling parameter. By changing this scale (as opposed to the image scale) the detectors can be tuned to suppress spurious ridges without moving them. Desirable ridge detector properties for portal/simulator imaging are described and the ridge definitions are tested accordingly. Experiments show our new ridge detector to outperform the existing one in simulator/portal image matching.
منابع مشابه
An Evaluation of Ridge Extraction Methods for Portal Imaging
In this paper an existing ridge detector based on the Hessian tensor and a new one based on the structure tensor are evaluated for use in portal/simulator imaging. Tensor smoothing is introduced as a scaling parameter. By changing this scale (as opposed to the image scale) the detectors can be tuned to suppress spurious ridges without moving them. Desirable ridge detector properties for portal/...
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