A Method for Laser-line Detection in a Three-dimensional Measurement System
In this paper, the characteristic of noise in the process of detecting laser-line in 3-dimesional measurement was analyzed, and a new method of detecting laser-line was proposed on the basis of comparing some prevalent methods. In this method, the effect of environment noise was firstly eliminated by subtracting the image without laser-stripe from the one with laser-stripe of the same scene. Threshold image segmentation method based on the variance between two classes was used to segment the upper image. The laser-stripe in the binary image was then dilated and the centre-line of the laser-stripe was picked up. By smoothing and joining the line to eliminate breakpoints though the template designed by the authors, a laser-line with one pixel width was finally obtained. Experimental results indicate that this method is excellent in fast-obtaining, high-precision and simple-operating, which meets the requirements of real-time 3-dimensional measurement.
3-dimensional measurement obtaining laser-line characteristic of noise
Wang yibo Hu zhongxiang Yao yao Yang junwei Teng jiaxu
National Key Laboratory for Remanufacturing, Academy of Armored Forces Engineering, Beijing, China, 100072
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
3041-3044
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）