02-02-2017 дата публикации
Номер: US20170030719A1
Принадлежит:
A position relation in a region of any shape or size on the earth is determined correctly and highly accurately. A shape determination device includes a candidate point detection unit and an intersection point detection unit . The candidate point detection unit detects, as a candidate point, a point of intersection between a first reference circle to which an inputted first line segment on an inputted true sphere belongs and a second reference circle to which an inputted second line segment on the true sphere belongs. The intersection point detection unit determines whether the candidate point is an intersection point between the first line segment and the second line segment. 1. A shape determination device comprising:a candidate point detection unit which detects, as a candidate point, a point of intersection between a first reference circle to which an inputted first line segment on an inputted true sphere belongs and a second reference circle to which an inputted second line segment on the true sphere belongs; andan intersection point detection unit which determines whether the candidate point is an intersection point between the first line segment and the second line segment.2. The shape determination device according to claim 1 , wherein{'sub': 1', '2', '1', '2, 'claim-text': {'br': None, 'i': D=', 'V', 'V', '−s', '−s', 's', 's', 'V', 'V, 'sub': 1', '2', '1', '2', '1', '2', '1', '2, 'sup': 2', '2', '2, '1−({right arrow over ()}·{right arrow over ()})+2({right arrow over ()}·{right arrow over ()})\u2003\u2003[Math. 1]'}, 'when a unit normal vector with respect to the first reference circle is V, a unit normal vector with respect to the second reference circle is V, a parameter indicating a radius of the first reference circle is S, a parameter indicating a radius of the second reference circle is S, and a discriminant D is the following equation,'}{'sub': 1', '2', '1', '2, 'the candidate point detection unit calculates values of V, V, s, s, and the discriminant ...
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