Three dimensional concepts and display methods, Computer Graphics

Assignment Help:

Three Dimensional Concepts and Display Methods 

 Imagine yourself taking a picture by a camera.  What do you normally do?  You specify a viewpoint and view direction and then set up a view window.  Once that is done you take a snap and the image of 3D scene/object is captured in a 2D film.  Basic idea behind this is projection from 3D to 2D.  Projections are broadly classified under two names (i) Parallel (ii) Perspective.  When objects are projected onto the display plane along parallel lines, we call it parallel projection.  In this case a view direction is specified and image of points on the object are obtained by taking lines parallel to the view direction and finding their intersection with the display plane.  If you have seen an architectural drawing of a building plan, you would have noticed that they show three different plots, top view, front view and side view normally.  This actually is an example of a parallel projection of the building to be constructed.  On the other hand, perspective projection corresponds more closely to the way a human eye perceives a 3D scene.  A viewpoint is specified and points from the object are projected to the view plane by considering lines emanating from the points on the object and converging to the viewpoint.  Intersections of these converging lines with the display plane make the image of the object under perspective projection.


Related Discussions:- Three dimensional concepts and display methods

Computer animation - computer aided design, computer animation Note :...

computer animation Note : This is to be noticed that computer animation can also be produced by changing camera parameters as its position, orientation and focal length, as w

Dda or digital differential analyzer algorithm, DDA or Digital Differential...

DDA or Digital Differential Analyzer Algorithm - Line generation algorithms From the above discussion we get that a Line drawing is accomplished through calculating intermedi

Put the system of a geometric data table for a 3d rectangle, Put the system...

Put the system of a geometric data table for a 3d rectangle. Solution : Vertex Table Edge Table Polygon Surface Table

Briefly explain the importance of an adjustment layer, Question : (a) W...

Question : (a) What do you meant by "solo a layer " in Adobe After Effects. Explain briefly how would you perform it. (b) Briefly explain the importance of an adjustment lay

Computer aided design and computer aided manufacturing, The development of ...

The development of CAD had little consequence on CNC initially because of the various abilities and file formats used through drawing and machining programs. Conversely, as Compute

Describe the term multimedia, Question: (a) Describe the term ‘Multimed...

Question: (a) Describe the term ‘Multimedia'. (b) Briefly describe two main reasons to use ‘Compression' in Multimedia. (c) All Multimedia development teams could have

Associative links, Associative Links: it is a link that is completely inde...

Associative Links: it is a link that is completely independent of the exact structure of the information. For illustration we have links depends on the meaning of various informat

Basics of animation - computer animation, Basics of Animation - Computer an...

Basics of Animation - Computer animation Historical and traditional methods for production of animation: As we have studied the transformations linked in computer graphics

Ray tracing - polygon rendering & ray tracing methods, Ray Tracing - Polygo...

Ray Tracing - Polygon Rendering & Ray Tracing Methods Ray tracing obeys all rays from the eye of the viewer back to the light sources. The method Ray tracing is very good at

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