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6 March 1998 Three-dimensional shape reconstruction from two-dimensional images using symmetric camera location
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Proceedings Volume 3313, Three-Dimensional Image Capture and Applications; (1998)
Event: Photonics West '98 Electronic Imaging, 1998, San Jose, CA, United States
A new, simple technique is proposed to recover 3D shape from 2D images. For this purpose, an opposite camera geometry is introduced to decrease stereo matching calculation time. In order to get 2D image data, a symmetric camera geometry is adopted; that is, two cameras are located oppositely and their lens centers are on a straight line. Then, the orthographic projection images are make the same silhouettes of the object. However in the case of the perspective projection, the two shapes are different and the difference is dependent on the difference of the distances from each camera. So, when the same point is observed on the edge of the silhouettes, we can find the corresponding point at the same direction in lens center coordinate system. From this situation, it is easy to solve the stereo matching problem. Moreover, if we know the camera's position, the 3D position of such object's point is determined from each radius in polar, because the radii of the two images are simply proportional to the camera distances. An experiment for the stuffed rabbit demonstrates the validity of this method.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Masaharu Shimanuki, Hiroyuki Sato, and Takao Akatsuka "Three-dimensional shape reconstruction from two-dimensional images using symmetric camera location", Proc. SPIE 3313, Three-Dimensional Image Capture and Applications, (6 March 1998);

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