| Popis: |
A simple method is discussed in this paper to measure the parameters of an inclined wall. By using a simple USB camera and three laser projectors, we can evaluate the distance between a target wall and the camera. We can also measure the tilt angle of the wall. Pixel counts between the image’s center point and the laser spots in images taken at different photographing distances will be different. By identifying the positions of the laser-projected spots in images, the pixel counts between the laserprojected spots and the image center point can be calculated for measuring the distance and tilt angle. From experimental results we have found that the measuring method is more suitable for short distance measurements, such as the architectural sketch, indoor decoration or retaining wall detection. |
