Arbitrary terrain reconstruction is based on the digital elevation data. This data can be real or artificial, i.e. created in Bryce. Also suggested approach allows synthesis of the dynamically changing surfaces, for instance, water surface. Below are the examples of terrain surface synthesis.
Visibility and clouds
The atmosphere visibility is given by well known term –meteorological optical range (MOR). Our methods are capable of synthesizing 3D images of haze, fog as well as stand alone clouds and solid cloudiness with top and bottom bounds. The object “cloud” has its own description and type (cumulus, plumose, etc.). The big cloud clusters are built using a random number generator. There is an animation of clouds which includes demonstration of motion, dynamic formation and transparency. More >>>
The geometry of artificial objects is most commonly described with drawings, grid models, etc. In our approach, the graphics primitives are the surfaces of the first and second order. Apart from common object description (i.e. geometric, textural) we have developed additional description methods for both dynamic and static artificial objects that substantially reduce rendering time.More >>>
Light and shadows
The diffusion, diffraction and reflection of light along with shadows give us the impression of reality. Parameters of the light sources are color, luminous intensity, directional pattern, location and extension in space. Parameter control defines the surface emittance and reflection. The light is diffused by particles of water, dust, etc. with given size, density and dispersion indicator. Shadows are automatically computed for any 3D objects such as terrain, natural and artificial objects, clouds etc.
Source data is represented in the form of 3D matrix of density distribution within the volume.
Image synthesis is conducted using ray tracing which again confirms the universal aspect of this technique. Visualization system based on our approach can be used for medical visualization as well as technical drawing.
Разработана модель описания газодинамических объектов (ГО), которая позволяет определять параметры объекта в любой момент времени в заданной области пространства. Результаты могут быть использованы в задачах научно-исследовательской визуализации, в промышленности (САПР по аэродинамике, гидродинамике) и при разработке систем визуализации реального времени для тренажеров транспортных средств.
We have created modeling software, which allows to check mathematical models and algorithms developed by us.