Title :
Plane geometric information extraction from single image based on cross ratio
Author :
Wang, Meizhen ; Liu, Xuejun ; Zhen, Yan ; Lu, Yue
Author_Institution :
Key Lab. of Virtual Geographic Environ., Nanjing Normal Univ., Nanjing, China
Abstract :
An effective approach to extracting geometric information of scenes from a single uncalibrated image is presented in this paper. Without any prior knowledge of the camera, we describe how to employ cross ratio to compute the length of a line segment on plane surface, while only the length(s) of the certain segment(s) is/are known. Real images of indoor and outdoor scene tests validate our approach.
Keywords :
feature extraction; geographic information systems; cross ratio; image extraction; line segment; plane geometric information extraction; plane surface; single uncalibrated image; Accuracy; Cameras; Classification algorithms; Data mining; Distortion measurement; Image segmentation; Metrology; Cross Ratio; Single Image Measurement; Vanishing Line; Vanishing Point;
Conference_Titel :
Geoinformatics, 2010 18th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-7301-4
DOI :
10.1109/GEOINFORMATICS.2010.5567625
