Image analysis – Applications
Patent
1997-05-08
2000-05-02
Couso, Yon J.
Image analysis
Applications
382115, 382295, G06K 900
Patent
active
060582006
ABSTRACT:
A method for producing a cephalometric lateral profile usable for growth forecasts and treatment simulations particularly for use by orthodontists and maxillo-facial surgeons in planning treatments for their patients. The method includes obtaining a lateral cephalometric x-ray and image of a subject, e.g. by an x-ray machine and a video camera, creating a polyline outline of the lateral profile of the image, identifying a set of pre-defined points on the outline, and converting the polyline outline to a corresponding series of Bezier curves using the identified points as anchor points. The pre-defined points preferably include a set of points on the polyline outline at which the ratio of the subject's soft tissue to the subject's hard tissue is known, e.g. the glabella, the soft nasion, the tip of the nose, the subnasal, the soft A-point, the upper lip, the upper lip embrasure, the lower lip embrasure, the lower lip, the soft B-point, the chin, and the soft menton. Preferably the step of creating a polyline outline is done by digitizing the lateral profile of the cephalometric image and providing the digital values to a processor. The processor then identifies the set of anchor points by using certain correspondingly unique geographical characteristics of the points. The method can also include the step of eliminating surplusage digital values which can arise from the digitizing.
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patent: 5683243 (1997-11-01), Andreiko et al.
patent: 5687259 (1997-11-01), Linford
Blaseio, Gunther, Quick Ceph Image, Reference Guide, 1993.
Couso Yon J.
Richman, III Merle W.
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