Assumptions for area subdivision method, Computer Graphics

Assignment Help:

Assumptions for Area Subdivision Method

a) ¾   Plane of projection is z=0 plane

b) ¾ Orthographic parallel projections

c) ¾   Direction of projection as d= (0,0,-1)

d) ¾   suppose here, the viewing (screen) area is a square

e) ¾   Objects are made up of polygon faces.

1817_Assumptions for area subdivision method.png

To apply the area-subdivision method, we should identify whether the area is part of a single surface or a complex surface by means of visibility tests. If the tests specify that the view is sufficiently complicated, we subdivide it. Furthermore, we apply the tests to each of the smaller regions and then subdivide additionally, whether the tests specify that, the visibility of a particular surface is still not certain. We continue this process till the subdivisions are simply analyzed as belonging to a particular surface or till they are decreased to the size of a single pixel. Beginning with the full screen as the initial area, the algorithm divides an area at all stages in four smaller area, as demonstrated in figure 8 that is similar to quad-tree approach.


Related Discussions:- Assumptions for area subdivision method

Applications that can handle vector data, Applications that can handle Vect...

Applications that can handle Vector Data There are hundreds of applications under the market which can be used to modify or make vector data. In prepress: Adobe Illustrator, Ma

Explanation of light source by a luminance, Explanation of light source by ...

Explanation of light source by a luminance Explanation of any light source by a luminance the factors identified as: Light source explained by a luminance 1)   All color as

Hypertext/media and human memory, Hypertext/media and Human Memory Huma...

Hypertext/media and Human Memory Humans associate pieces of information along with other information and make complicated knowledge structures. Thus, this is also said as the h

Objects - polygon rendering and ray tracing methods, Objects - polygon rend...

Objects - polygon rendering and ray tracing methods Objects could be any state of material as solid, liquid. Gas and plasma. Though ray tracers can merely assist objects whic

Global illumination model -polygon rendering, Global illumination model -po...

Global illumination model -polygon rendering This illumination model adds to the local model the light which is reflected from the other surfaces to the current surface. This

Gourand shading and phong shading, Gourand shading and Phong shading ...

Gourand shading and Phong shading a. Gourand shading OR Intensity interpolation scheme We will discuss such scheme in further section of Gourand shading OR Intensity in

Painting and drawing, Painting and Drawing While we talk about graphic...

Painting and Drawing While we talk about graphics, we mean pictures can be either photographs or illustrations. If you want to acquire graphics into a Web page or multimedia r

Shannon fano with the lempel ziv welsh algorithm, Question: (a) A stat...

Question: (a) A statistical encoding algorithm is being considered for the transmission of a large number of long text files over a public network. Part of the file content i

How many times will vertex appear in the intersection points, 1. For the po...

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

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd