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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 displays of object cross sections commonly use octree representation.
explain about raster in cg
How we create virtual reality images for use on a computer system When a virtual tour of, for instance, a house is shown on a website the images need to be first created and th
Determine the advantages of raster-scan systems (i) Rasterisation is now performed faster since a special purpose processor is used. (ii) The CPU is not slowed down by the
In contrast to depth-buffer method, here we identify one surface at one time, scan-line method deals along with multiple surfaces. Since it processes each scan-line at one time, al
Two Modes of Operation of Tablets Tablets typically sustain two modes of operation as: 1) Digitizer Mode: creates a one-for-one connection between screen and tablet.
What is the difference between impact and non-impact printers? Impact printer press produced character faces against an inked ribbon on to the paper. A line printer and dot-ma
Viewing Transformation In previous section, we have discussed about the geometric transformations as Translation, Shearing, Reflection, Scaling and Rotation. Rotation, Reflect
Properties of Perspective projections - Transformation 1) Faraway objects seem smaller. 2) Straight lines are projected to straight lines. 3) Let line 1 and 2 is two s
What is clipping? Explain Sutherland Hodgeman polygon clipping algorithm with example. OR Write the algorithm for Sutherland Hodgeman Polygon. Beginning with the initial set of p
Performing rotation about an Axis For performing rotation about an axis parallel to one of the coordinate axes (say z-axis), you first need to translate the axis (and hence the
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