We have developed a 5.5mm and 10mm dual optical channel laparoscope that combines both exit channels into a
single, standard, endoscopic eye cup which attaches directly to a single, conventional HD camera head. We have also
developed image processing software that auto-calibrates, aligns, enhances and processes the image so that it can be
displayed on a stereo/3D display to achieve a true 3D effect.
The advantages to the end user for such a 3D system are that they do not have to purchase a new camera system, all of
their existing scopes are still available to use, as are all integrated OR features. They will be able to add 3D capability to
current HD system by purchasing only stereo scopes and a small video processing computer box and adding a 2D/3D
HD capable monitor.
We describe an interactive software simulator that assists with the design of multi-camera setups for applications such as image-based virtual reality, three-dimensional reconstruction from still or video imagery, surveillance, etc. Instead of automating the camera placement process, our goal is to assist a user by means of a simulator that supports interactive placement and manipulation of multiple cameras within a pre-modeled three-dimensional environment. It provides a real-time 3D rendering of the environment, depicting the exact coverage of each camera (including indications of occluded and overlap regions) and the effective spatial resolution on the surfaces. The simulator can also indicate the dynamic coverage of pan-tilt-zoom cameras using "traces" to highlight areas that are reachable within a user-selectable interval. We describe the simulator, its underlying "engine" and its interface, and we show an example multi-camera setup for remote 3D medical consultation, including preliminary 3D reconstruction results.
VISTAnet, an experimental gigabit network test bed, ties together a CRAY Y-MP, the Pixel-Planes 5 graphics engine, and an SGI host machine to create a metacomputer capable of real-time radiation therapy dose calculation and display. We report on the methods used to manipulate and examine the 3D radiation dose distribution, with emphasis on the visualization, which uses a parallel, interactive, multimodal renderer implemented on Pixel- Places 5. The real-time display is designed to facilitate comprehension of spatial relationships among the geometrically complex anatomy and radiation dose structures that characterize a 3D radiation treatment scenario. The currently ongoing clinical evaluation of VISTAnet has already yielded encouraging results.
This work presents a head-motion-parallax visualization system for arbitrarily complex computer graphics databases (such as biomedical data sets) using precomputed images. It features a large rear-projection screen and a blind restricting the range of possible vantage points. We describe implementation details for the high-resolution low-lag prototype system and relate first reactions from users.
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