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Ray Tracing: Ray t racing is the technique to determine which objects in the scene are visible. In this to identify the visible surface for each pixel we continue to bounce the ray around the scene and collecting intensity contributions. This provides a simple and powerful rendering technique for obtaining global reflection and transmission effects. The basic ray tracing algorithm also provides for visible surface detection shadow effects transparency and multiple light source illumination. For each scan line the intensity at the interaction of the scan line with a polygon edge is linearly interpolated from the intensities at the edge end points. For example the polygon edge with end point vertices at position 1 & 2 is intersected by the scan line at point 4. A fast method for obtaining the intensity at point 4 is to interpolate lower intensities I1 & I2 using only the vertical displacement of the scan line.
What is bitmap and what is pixmap? The frame buffer used in the black and white system is called as bitmap which take one bit per pixel. For systems with many bits per pixel,
Question: (a) Differentiate between lossy and lossless compression. (b) State the uses of the two compression standards MPEG-1 and MPEG-2. (c) State three areas where
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Uniform B - spline curve: When the spacing between Knot values is constant, the resulting curve is called a uniform B- spline. Blending function for B- spline curves are defined b
What is a spline? To produce a smooth curve by a designed set of points, a flexible strip called spline is used. Like spline curve can be mathematically explained with a piece
Sub Classes of Orthographic Projection There are three ordinary sub-classes of Orthographic (axonometric) projections as: 1) Isometric: The direction of projection makes
What is riged body transformation matrix? Show that the composition lf two rotation is additive by concatenating the matrix representation of r (theta 2 ) = R (theta1 + theta 2 ) t
Specified p 0 (1, 1): p 1 (2, 3); p 2 (4, 3); p 3 (3, 1) as vertices of Bezier curve find out 3 points on Bezier curve? Solution : We consider Cubic Bezier curve as: P (
Translation, Rotation and Scaling - output primitives 1. Two basic approaches used in character generation are - Bitmap method and outline method. 2. All 2D geometric tran
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
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