Fundamentals of Wearable Computers and Augmented Reality, 2nd Edition

539Augmented Reality for Image-Guided Surgery

20.3.5.2 Visualization Processing

Beyond the use of transparency and color coding, an interesting visualization tech-

nique that was used in a computer-assisted AR virtual uoroscopic surgical system

for long bone fractures was NPR. Zheng etal. (2008) found that when they used

photorealistic rendering of the implant models, important aspects of the uoroscopic

images were occluded. They improved the visualization by using a more illustrative

rendering style where only silhouette lines of the surgical implants were used,

thereby showing more image details and not occluding the uoroscopic image during

navigation.

20.3.5.3 View

Blackwell etal. (2000) proposed an image overlay system for both surgical ...