Medical Image Analysis: Progress over Two Decades and the Challenges Ahead
IEEE Transactions on Pattern Analysis and Machine Intelligence
Multiple view geometry in computer visiond
Multiple view geometry in computer visiond
Correspondence between different view breast X-rays using curved epipolar lines
Computer Vision and Image Understanding
SMIS - A Real-Time Stereoscopic Medical Imaging System
CBMS '04 Proceedings of the 17th IEEE Symposium on Computer-Based Medical Systems
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This paper describes a method whereby a three dimensional position inside a human body can be measured using a simple X-ray stereo image pair. Because the geometry of X-ray imaging is similar to that of ordinary photography, a standard stereo vision technique can be used. However, one problem is that the X-ray source position is unknown and should be computed from the X-ray image. In addition, a reference coordinate on which the measurement is based needs to be determined. The proposed method solves these two problems using a cubic wire frame called the reference object. Although three dimensional positioning for a human body is possible by Computer Tomography (CT), it requires expensive equipment. In contrast, the proposed method only requires ordinary X-ray photography equipment, which is inexpensive and widely available even in developing countries.