Xunheng Technology is a high-tech enterprise in Beijing focusing on machine vision and 3D image field, mainly engaged in the research and development, production and sales of machine vision system, industrial testing equipment and 3D measuring equipment. We have a complete image laboratory and an efficient research and development team. We have made preliminary achievements in image processing, pattern recognition, text processing, character recognition, wide baseline image matching, sub-pixel feature location, stereo vision, 3D reconstruction, intelligent classification, neural learning and so on.