ha yuejin, male, holds a doctoral degree of science. At present, he is a associated Professor, mastersupervisor,and office director of the teacher training institution in photogrammetry and remote sensing, department of surveying and mapping engineering, school of communications, southeast university. He graduated from Wuhan university, majoring in photogrammetry and remote sensing 1987, obtained a master's degree in Geotechnical engineering major from southeast university 2004,and obtained doctor of science degree in cartography and GIS from Nanjing normal university 2008. NOW he mainly engaged in digital image processing and analysis, digital photogrammetry, urban 3d GIS data acquisition.