| 摘要 |
PURPOSE: To automatically generate a geometrical model of slit light. CONSTITUTION: A work 23 for calibration which has flat surfaces in two stages differing in height and is provided with plural marks on the respective flat surfaces, is irradiated with the slit light from a projection device 22 to form intersection lines of the slit light on the respective flat surfaces, and an image of the intersection lines is picked up by an image pickup device 21. A CPU 12 detects the two-dimensional coordinates of the respective marks in the two-dimensional image stored in an image storage part 15, and arithmetic operation using the coordinates and the known three-dimensional coordinates of the respective marks is carried out to calculate a camera model. Then, when slight light irradiation and image pickup processing are performed again, the CPU 12 detects the coordinates of image points of slit images in the two-dimensional image and the arithmetic operation using the three-dimensional coordinates of the coordinates and the image points calculated from the camera model is performed to find the geometrical model of the slit light. |
