Towards real-time stereoscopic depth reconstruction for laparoscopic surgery

Barry McCullagh; Fergal Shevlin

doi:10.1117/12.641673

15 February 2006 Towards real-time stereoscopic depth reconstruction for laparoscopic surgery

Barry McCullagh, Fergal Shevlin

Proceedings Volume 6063, Real-Time Image Processing 2006; 606302 (2006) https://doi.org/10.1117/12.641673
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

The use of correlation-based techniques to perform stereoscopic matching enables real-time frame rates to be achieved. The disparity maps produced are not as accurate as those produced using more sophisticated methods. This paper presents three ideas aimed at decreasing the computation time of standard correlation-based techniques. The reduction in computation time is achieved using two different methods. Firstly, the number of comparisons is reduced using MPEG-2 motion vectors to narrow the disparity search range to an optimised region and identifying areas of a scene which have remained static between frames so the previous disparity can be used. The second approach is an implementation of stereo using the above ideas on a GPU. The increases in error and frame rate can be controlled depending on the requirements of the application.

Citation Download Citation

Barry McCullagh and Fergal Shevlin "Towards real-time stereoscopic depth reconstruction for laparoscopic surgery", Proc. SPIE 6063, Real-Time Image Processing 2006, 606302 (15 February 2006); https://doi.org/10.1117/12.641673

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