| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2008: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Research Abstract |
Interpolation is one of the most typical problems that arise in the application of B-spline curves and surfaces. In this research we are interested in not only interpolating a set of points, but also normal vectors given at these points by the B-spline curves and surfaces. Applications of point-normal fitting include enhancement in the free-form curve design by adding the normal control, and accurate approximation of offset curves/surfaces. Our method relies on a surprisingly simple geometric algorithm which iteratively updates the input control points in a global manner based on local point-curve/surface distance computations, imposition of orthogonality conditions of the normal vector, and offsetting procedures. Examples are provided to demonstrate the effectiveness of the proposed algorithms.
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