| 摘要 |
PROBLEM TO BE SOLVED: To make improvable the camera calibration accuracy by combining the corresponding points of photographs where the feature points are common to each other at three or more points into a one via the rotation and translation of the said corresponding points and deciding the direction and positional vector of a camera. SOLUTION: The three-dimensional coordinates of a set A are calculated, and the camera direction and position are decided for a set B of a photograph including six or more feature points and deleted from the set A. The camera direction and position are decided for a pair of two sheets of photographs including eight or more corresponding points to define a set C of paired two sheets of photographs. When one of both photographs is an element of the set B, the other photograph is also added to the set B to decide the relative camera direction and position. Then the three-dimensional coordinates of a new set B are calculated, and the camera direction and position are decided based on the remainder of the set A for a photograph including six or more calculation points, added to the set B and deleted from the set A. The three-dimensional coordinates of a set D whose camera direction and position are known from the remainder of the set A are calculated and the set B is added to the set D. The corresponding points of photographs where three or more feature points are common to each other in a new set D are combined into one via the rotation and translation of the said corresponding points, and the camera direction and position are found. |
