نتایج جستجو برای: 3d topography
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We present a Matlab package for visualizing global data on a 3D sphere, whose rotation can be animated. Planetary elevation data sets such as geoid height or Earth topography can easily be represented through a slightly exaggerated, coloured 3D relief, and then saved either as images or animations. All necessary parameters for the 3D visualization and animation are described and their usage dem...
We present a handheld scanning system for measuring in-vivo the 3D topography of the human skin surface. The system has been envisaged for analyzing the 3D shape of skin cancer lesions, providing a more precise characterization of the lesions compared with the conventional examination done by using the naked eye and dermoscopy methods. The 3D scanning system is composed of cost-effective and co...
In earlier research a TEN (Tetrahedronised Irregular Network)-based DBMS approach for modelling 3D Topography was developed. This topological 3D data model relies on Poincaré algebra. Topographic features are modelled within the TEN as set of constraints. This paper focuses on the way in which these constraints can be inserted (incrementally). It is shown that 16 theoretical cases can be identi...
At Ordnance Survey, GB, we have taken an incremental approach to creating our 3D geospatial database. Research at Ordnance Survey has focused not only on methods for deriving 3D data, but also on the needs of the user in terms of the actual tasks they perform. This provides insights into the type and quality of the data required and how its quality is conveyed. In 2007, using task analysis and ...
In their native context, cells exist not in isolation but within a dynamic environment composed of a complex heterogeneity of cell types, extra-cellular matrix (ECM) structure, and biomolecules. The cell probes and responds to its environment through a collection of inputs guided by cell-cell and cell-ECM communication. Communication among cells can be varied, with cells of both the same type (...
Close range hyperspectral imaging is a developing method for the analysis and identification of material composition in many applications, such as in within the earth sciences. Using compact imaging devices in the field allows near-vertical topography to be imaged, thus bypassing the key limitations of viewing angle and resolution that preclude the use of airborne and spaceborne platforms. Terr...
In the past few years the number of applications that use 3D information of topographical objects increased rapidly. With the growing demand for 3D topographic data the need for automated 3D data acquisition also grows. Height information can be extracted from airborne or terrestrial acquisition methods, but can also be modelled as implicit semantic information. Adding height information to exi...
The Weierstrass–Mandelbrot function model was used to simulate the rough topography of a target surface, and fractal theory study characteristics surface topography, which is self-similarity topography. 3D fluid dynamics governing equations laser-supported detonation plasma flow field in Cartesian coordinates are given discretized by high-order difference scheme. equation state under different ...
BACKGROUND A new method for treating facial rhytides and acne scars with nonablative laser and light source techniques has recently been introduced. Given the inherent limitations of photographic and clinical evaluation to assess subtle changes in rhytides and surface topography, a new noninvasive objective assessment is required to accurately assess the outcomes of these procedures. OBJECTIV...
BACKGROUND AND PURPOSE Recent functional MR imaging studies have revealed that the inferior parietal lobule (IPL) supports numerous functions; however, the precise organization of the IPL remains unclear. It has been previously reported that the individual components of the IPL show variable morphologic features; thus, any investigations of IPL function must take into account the variable topog...
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