3D model creation method

摘要

PPROBLEM TO BE SOLVED: To provide a three-dimensional model preparation method capable of reducing remarkably labor for an observation in a field and a computer input or the like, and capable of preparing easily a precise three-dimensional model. PSOLUTION: Air signs 10 displayed alternately with white circles and black circles are provided in prescribed portions in a survey place, and coordinates of a standardization point O in the center thereof is measured in each thereof. The each portion of the survey place is made to include a prescribed number of the air signs 10 within each photographing range, and the adjacent respective photographing ranges are overlapped by 50-80% to be photographed by a camera 14. Image data of a photographed photograph are analyzed, and the image data are constructed within a space, based on the coordinates of the standardization point O. The three-dimensional model is prepared based on the image data constructed within the space. A rotation target T serving as a reference position is provided to make coordinates systems of the respective photographed portions same, and coordinates of the rotation target T are measured further. PCOPYRIGHT: (C)2005,JPO&NCIPI