Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1990-04-20
1993-07-27
Nguyen, Phu K.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
395143, 395141, 340728, 340747, G06F 1572
Patent
active
052316971
ABSTRACT:
In curve fitting to straight short vectors, a corner point is detected by a determination of .vertline.Pi-Vi.vertline.>.delta. on the basis of a connecting point Pi, an interpolation point Vi and a reference value .delta.. After a comparison of the distance between vectors Pi-1Pi and PiPi+1 connected at the connecting point Pi, a determination of .vertline.Pi-Pi-1.vertline. cos (.theta.i/2)>.delta. or .vertline.Pi+1-Pi-1.vertline. cos(.theta.i/2)>.delta. is performed to detect a point at which a straight line connects a curve smoothly, a point at which a curve connects a straight line smoothly or a point on a curve.
REFERENCES:
Technology and Science of Informatics, vol. 1, Nos. 1-6, 1983, pp. 121-134 "Segmentation of Line Drawings for Recognition and Interpretation", Masini et al.
Computer Aided Geometric Design, vol. 1, 1984, pp. 1-60, Elsevier Science Publishers B.V., Amsterdam, NL; W. Bohm et al. "A Survey . . . in CAGD".
Computer Aided Design, vol. 12, No. 4, Jul. 1980, pp. 199-201, IPC Business Press; W. Bohm: "Inserting New Knots Into B-Spline Curves".
Kabushiki Kaisha Toshiba
Nguyen Phu K.
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