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Differentiate between z-buffer method and scan-line method. What is the visibility test made in these methods?
Solution: In depth buffer algorithm every pixel location on the projection plane is identified for determining the visibility of surfaces regarding this pixel. Conversely, in scan-line method all surfaces intersected through a scan line are studied for visibility. The visibility test in depth-buffer method engages the comparison of depths of surfaces regarding a pixel on the projection plane. The surface closest to the pixel position is seemed visible. The visibility test in scan-line method which compares depth computations, for each overlapping surface to find out which surface is nearest to the view-plane hence it is declared as visible
Other File Formats BMP/DIB/RLE File Formats These are termed as device independent bitmap files. They exist in two various type formats: a) OS2 format and b) Windows
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Application Interlacing is utilized through all the analogue TV broadcast systems in recent use as: NTSC: 59.94 fields per second, 525 lines, still field drawn first
c/c++ program
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Area-Subdivision method This method is a type of an image-space method although uses object-space operations re-ordering or sorting of surfaces as per to depth. Area sub-div
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