【作者】 苑惠娟； 于佳； 尚爱军；

【Author】 YUAN Hui-juan, YU Jia, SHANG Ai-jun (Harbin University of Science and Technology, Harbin 150040, China)

【机构】 哈尔滨理工大学；

【摘要】 如何获得蕴含了深度信息的深度图像是发展机器视觉的关键。因为结构光空间编码方法只需要一幅图像就可以获得被测物体上可测点的三维信息,具有分辨率高、速度快和易于实现的优点而成为研究热点。一种颜色编码方案被用于大型物体表面的三维测量。这种编码方案以红、绿、蓝三原色以及它们的补色黄、品、青6种颜色作为基本颜色,按着任意相邻的3个条纹颜色排列顺序是唯一的方式组合,构成了颜色编码图案,并由投影仪投射到被测物体上。通过对摄像机拍摄的图像进行解码,获得物体的三维坐标。利用被测物体上的标志特征点,对物体进行分块测量。结合边缘检测及圆心检测确定分割线,对图像进行分割、拼接,实现了对大型物体表面的三维测量。更多还原

【Abstract】 To obtain 3D map including depth information, is one of the key theory and technology in machine vision field. We focused on structured light spatial encoding method, because for 3D information acquiration of the tested object, only one image is needed to be captured by the camera by this method, so it has some advantages such as high resolution, easy implementation and fast measurement. A kind of new method of color encoding is adopted to measure the large object surface. The color stripe encoded pattern with 6 colors, they are three primary colors: red, green, blue and their contrary colors: yellow, magenta and cyan, witch have an important character that the combination of three color stripe order is unique. The pattern is projected to an object by a digital projector. The image of the object is captured by a CCD color digital camera. The 3D coordinates of the object can be obtained by decoding and calculating the parameters from the color image captured. Object is measured by pieces using the characteristic points on the object. Combination with edge detection and center of circle detection to make sure the cut-off line, the 3D measurement of large object surface is achieved.更多还原