منابع مشابه
Visualization Techniques for Virtual Endoscopy Visualization Techniques for Virtual Endoscopy
Virtual Endoscopy is a technique to explore hollow organs and anatomical cavities using 3D medical imaging and computer graphics. Virtual Endoscopy turns out to be a promising technique to improve, or even in some procedures substitute, real endoscopy. A real endoscopy is invasive and usually implies some risk for the patient. In the last decades, much research has been done in this field. This...
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Minimally invasive surgical interventions (MIS) using monocular optics lead to the loss of 3D depth perception due to the 2D visualization. Thus the surgeon must estimate the pose of 3D objects in the surgical scene solely based on his experience. Especially for residents this is very difficult due to the lack of this experience. This may lead to longer surgeries thus to more cost and higher mo...
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A web-based application for computed tomography (CT) image analysis and visualization of the bronchial airways is presented in the paper. The technique used in this application provides a noninvasive way to examine the interior of the bronchial tubes. Many different properties of the tubes such as presence of the foreign objects or structure abnormalities of the tubes can be detected this way. ...
متن کاملAccelerating Virtual Endoscopy
Applying volumetric ray tracing in interactive visualization has always been limited by low rendering speeds. This paper presents methods for accelerating first-hit ray tracing based virtual endoscopy with negligible impact on image quality, which aim at improving empty-space traversal (tracing all rays to the colon wall and storing the results in a depth buffer) and shading (surface normal app...
متن کاملHatch Textures for Virtual Endoscopy
We present an illustrative rendering extension for virtual endoscopy to enhance depth perception. For this purpose different hatch textures are applied and their ability to enhance 3D shape estimation is discussed. The stroke directions of the textures are aligned to the principal curvature directions of the surface. Starting with two patterns suggested by Kim et al. [1], we developed texture p...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 2000
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00001356830