Calibration and accuracy testing for image-enhanced endoscopy.
New surgical navigation techniques may combine the use of live video from a surgical endoscope with 3D volumetrically-reconstructed images of a patient's anatomy. This image-enhanced endoscopy requires calibration of the endoscope to ensure that the mapping of the real endoscope image to its virtual counterpart is properly performed. The application of a technique to calibrate an endoscope prior to use in a diagnostic or therapeutic procedure is described, as well as a simple yet effective linear method for lens-distortion compensation. The results of accuracy testing of the calibration technique using a dedicated testing apparatus are reported.
Bax
Michael R
MR
Image Guidance Laboratories, Department of Neurosurgery, Stanford, CA 94305-5327, USA.
Khadem
Rasool
R
Johnson
Jeremy A
JA
Wilkinson
Eric P
EP
Shahidi
Ramin
R
D002138:Calibration / Q000592:standards*; D004724:Endoscopy; D006801:Humans; D007089:Image Enhancement / Q000295:instrumentation*; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging; D012680:Sensitivity and Specificity; D025321:Surgery, Computer-Assisted / Q000295:instrumentation*; D013673:Technology Assessment, Biomedical; D014057:Tomography, X-Ray Computed; D014584:User-Computer Interface