Digitizing apparatus with extension-intersection measuring function
First Claim
1. A digitizing apparatus for obtaining form data of a subject three-dimensional model by scanning measurement lines on the surface of said three-dimensional model using a stylus of a tracer head, said digitizing apparatus comprising:
- a continuous cycle scanning measuring section for measuring coordinates of points on said measurement lines which are positioned at intervals of a constant scanning distance of said stylus;
a measured-coordinate temporary storage section for temporarily storing the coordinates of the points on said measurement lines;
an extension-intersection calculating section for determining associated sets of points from among the points on said measurement lines which extend along a same respective straight line in accordance with the coordinates read from said measured-coordinate temporary storage section, for extracting straight lines for the associated sets of points, and for calculating an extension-intersection as an intersection of two neighboring straight lines;
an extension-intersection storage section for storing the extension-intersection calculated in said extension-intersection calculating section; and
a data comparison and collation output section for comparing and collating the coordinates of the intersection read from said extension-intersection storage section and previously prepared and stored coordinates of intersections on a drawing so as to output results of said comparison and collation denoting a deviation error between the coordinates of the intersection of the three-dimensional model and the coordinates of intersections on the drawing.
1 Assignment
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Accused Products
Abstract
A digitizing apparatus capable of significantly shortening processing time is arranged to obtain straight portions from measured point-group data and is arranged to obtain the coordinates of intersections of two neighboring straight lines in sequential operations. The digitizing apparatus obtains form data of a subject three-dimensional model by scanning measurement lines on the surface of said three-dimensional model and includes a continuous cycle scanning measuring section for measuring coordinates of points on the measurement lines which are positioned at intervals of constant scanning distances, a measured-coordinate temporary storage section for temporarily storing the coordinates, an extension-intersection calculating section for extracting straight line portions in accordance with the coordinates read from the measured-coordinate temporary storage section and for calculating an extension-intersection as an intersection of two neighboring straight lines, and an extension-intersection storage section for storing the extension-intersection calculated in the extension-intersection calculating section.
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Citations
3 Claims
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1. A digitizing apparatus for obtaining form data of a subject three-dimensional model by scanning measurement lines on the surface of said three-dimensional model using a stylus of a tracer head, said digitizing apparatus comprising:
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a continuous cycle scanning measuring section for measuring coordinates of points on said measurement lines which are positioned at intervals of a constant scanning distance of said stylus; a measured-coordinate temporary storage section for temporarily storing the coordinates of the points on said measurement lines; an extension-intersection calculating section for determining associated sets of points from among the points on said measurement lines which extend along a same respective straight line in accordance with the coordinates read from said measured-coordinate temporary storage section, for extracting straight lines for the associated sets of points, and for calculating an extension-intersection as an intersection of two neighboring straight lines; an extension-intersection storage section for storing the extension-intersection calculated in said extension-intersection calculating section; and a data comparison and collation output section for comparing and collating the coordinates of the intersection read from said extension-intersection storage section and previously prepared and stored coordinates of intersections on a drawing so as to output results of said comparison and collation denoting a deviation error between the coordinates of the intersection of the three-dimensional model and the coordinates of intersections on the drawing. - View Dependent Claims (2, 3)
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Specification