Ray casting - polygon rendering and ray tracing methods, Computer Graphics

Assignment Help:

Ray Casting -polygon rendering and ray tracing methods

It is a method wherein the surfaces of objects visible to the camera are determined by throwing or say casting rays of light from the viewer in the scene. The concept behind this casting is to shoot rays from the eye, one per pixel and get the closest object blocking the path of such ray - think of an image as a screen-door, along with each square in the screen being a pixel.

275_Ray Casting - Polygon Rendering and Ray Tracing Methods.png

It is then the object the eye usually sees by that pixel. By using the material properties and the consequence of the lights in the view, this algorithm can find out the shading of this object. The simple assumption is made when a surface faces a light, then the light will reach such surface and not be blocked or in shadow. The shading of the surface is calculated by using traditional 3-D computer graphics shading models. This type of casting is not a synonym for ray tracing, although can be thought of as an abridged, and considerably faster, version of the ray tracing algorithm. Both images are order algorithms utilized in computer graphics to render 3-dimensional scenes to two dimensional screens by subsequent rays of light from the eye of the observer to a light source. Though ray tracing is as same to ray casting, this may be better consideration of as an extension of ray casting we will discuss such in the next topic in this section.


Related Discussions:- Ray casting - polygon rendering and ray tracing methods

Boundary fill algorithm - output primitives, Boundary Fill Algorithm Bo...

Boundary Fill Algorithm Boundary fill algorithm is suitable when the boundary has single color while flood fill algorithm is more suitable for filling regions which are defined

Introduction of 2-d and 3-d transformations, Introduction of 2-D and 3-D  ...

Introduction of 2-D and 3-D  Transformations In this, the subsequent things have been discussed in detail as given below: Different geometric transformations as transla

Raster & Vector display, what is refresh buffer/ identify the content and o...

what is refresh buffer/ identify the content and organisation of the refresh buffer for the case of raster display and vector display.

Linearly interpolate - modeling and rendering, Linearly interpolate - Model...

Linearly interpolate - Modeling and Rendering I 4 = I 1 + t (I 2 - I 1 ); here t = (|y 1 - y 2 |)/(|y 1 - y 2 |) I D = I A + t (I B - I A ); here t = (|AD|)/(|AB|)

Silicon graphics - hardware for computer animation, Silicon Graphics - Hard...

Silicon Graphics - Hardware for computer animation The SGI platform is one of the most broadly used hardware platforms in professional or broadcast feature computer animation

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

Interactive Computer Graphics, Explain the different input modes used in in...

Explain the different input modes used in interactive computer graphics.

Modelling and rendering a surface, Modelling and Rendering a surface Com...

Modelling and Rendering a surface Common practice in modelling and rendering a surface is to approximate it by a polygonal surface.  By a polygonal surface we mean a surface whi

Finding where the ball hits a segment, You will write a two-dimensional pre...

You will write a two-dimensional precursor of the three-dimensional bouncing ball simulation that is one of your choices for a ?nal project. This involves adding functions to your

Film recorders - graphics hardware, Film Recorders - graphics hardware ...

Film Recorders - graphics hardware It is a graphical output device for transferring digital images to photographic films. The easiest film recorders classically work through

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