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1. For the polygon shown in Figure on the next page, how many times will the vertex V1 appear in the set of intersection points for the scan line passing through that point? How many times will you count it when you form the pairs of intersection points? Justify your answer.
Answer: The vertex V1 = V4 will be counted once only since it is neither a maximum nor a minimum for y coordinates of the pairs of edges {V0V1,V1V2}and {V3 V4 , V4 V5} .
Write short notes on active and passive transformations? In the active transformation the points x and x represent different coordinates of the similar coordinate system. Here
What are the uses of homogeneous coordinates? Convert translation rotation and scaling in homogeneous coordinates. In mathematics homogeneous coordinates introduced by August
Various cases of Cohen Sutherland Line Clippings Currently, we study how this clipping algorithm works. For the sake of simplicity we will tackle all the cases with the assist
An 8x8 image f[i,j] has gray levels given by the following equation: f [i , j]= ? i-j ? ; i,j=0,1,2,3,4,5,6,7. a. Calculate the gray level value for all the pixels in the 8x8
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what is raster scan systems
1. Compare Bresenham line generation with Digital Differential Analyzer line generation. Ans. Bresenham line generation algorithm is better than Digital Differential Analyze
Parametric Continuity Conditions To ensure a smooth transitions from one section of a piecewise parametric curve to the next, we can impose various continuity conditions at the
What are the Developments of CAD Now CAD packages can be linked to 3D ink jet printers which produce an actual prototype model by building up layers/slices in fine powder (suc
limitations of cohen sutherland line clipping
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