Hardware-Accelerated Illustrative Medical Surface Visualization with Extended Shading Maps
نویسندگان
چکیده
In this paper, we introduce a new framework for the illustrative visualization of medical surface data. In most visualization frameworks, only light intensity is used to determine the surface shading. The analysis of medical textbooks reveals more complex shading approaches. The parameters of these approaches are mapped to different Shading Maps, which may be weighted and flexibly combined. We discuss the use of high-level attributes to simplify the specification. The resulting Shading Map is used as a lookup to determine the final intensity at a certain area. For this purpose, the rendering is accomplished on GPU by using OpenGL’s Framebuffer Objects. This framework may be useful for interactive educational systems or for medical record printings.
منابع مشابه
Hardware-Accelerated Interactive Illustrative Stipple Drawing of Polygonal Objects
Pen and ink rendering techniques provide artistic, illustrative, and informative representations of objects. With recent advances in hardware graphics technology, several researchers have developed interactive non-photorealistic rendering techniques, including hatching, toon rendering, and silhouettes. However, the stippling method of drawing and shading using dots has not received as much focu...
متن کاملSurface Relief Analysis for Illustrative Shading
In this paper, we present an analysis technique that leverages the complexity found in detailed 3D models for illustrative shading purposes. Given a smooth base surface with relief, it locates relief features (concavities, convexities and inflections) around each surface point and at multiple scales, using cubic-polynomial fitting. This object-space, per-vertex information is then used to guide...
متن کاملInteractive Rendering of Meso-structure Surface Details using Semi-transparent 3D Textures
Several techniques have been introduced to display meso-structure surface details to enhance the appearance of complex surfaces. One strategy is to avoid altogether costly semi-transparency in interactive contexts. However when dealing with hierarchical surface representations (important to filtering) and complex light transfers, semi-transparency must be treated. We propose a method that combi...
متن کاملHigh-Quality Pre-Integrated Volume Rendering Using Hardware-Accelerated Pixel Shading
We introduce a novel texture-based volume rendering approach that achieves the image quality of the best post-shading approaches with far less slices. It is suitable for new flexible consumer graphics hardware and provides high image quality even for low-resolution volume data and non-linear transfer functions with high frequencies, without the performance overhead caused by rendering additiona...
متن کاملHardware-accelerated Stippling of Surfaces derived from Medical Volume Data
We present a fast hardware-accelerated stippling method which does not require any preprocessing for placing points on surfaces. The surfaces are automatically parameterized in order to apply stippling textures without major distortions. The mapping process is guided by a decomposition of the space in cubes. Seamless scaling with a constant density of points is realized by subdividing and summa...
متن کامل