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Basic Tests - Producing Polygon Surface
A few basic tests that must be performed before producing a polygon surface through any graphic package as:
1) All vertexes are listed as an endpoint for at least two edges,
2) All edges are part of at least one polygon,
3) All polygons are closed,
4) All polygons have at least one shared edge,
5) If the edge table comprises pointer to polygons, each edge referenced through a polygon pointer to polygon, all edges referenced through a polygon pointer has a reciprocal pointer back to polygon.
Disadvantages with the Boundary Representation (i) It requires more storage than the corresponding half-space method. (ii) There is no guarantee that the object created is v
Animation Tools: Hardware tools: PCs ,Macintosh, Amiga Software tools: - Softimage ( Microsoft) ; - Alias/ Wavefront ( SGI) - 3D s
Image Processing 1. How is sampling done? Explain quantization in digital image processing? 2. Explain in brief: (1) Image Subtraction (ii) Image averaging. 3. Explain in
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limitation of vecgen algorithm
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Define Octrees? Hierarchical tree structures called octrees, are used to show solid objects in some graphics systems. Medical imaging and other applications that needs display
1. For the polygon shown in Figure on the next page, how many times will the vertex V 1 appear in the set of intersection points for the scan line passing through that point? How
Ray Tracing - polygon rendering and ray tracing methods "Ray tracing" is a technique of following the light by the eye to the light source. While ray casting only relates its
Question: (a) Describe in details the meaning of the following terms often available in drawing tools: (i) Welding objects; (ii) Trimming objects; (iii) Intersecting obje
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