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

Ray Tracing - Polygon Rendering and Ray Tracing Methods

Basically Ray tracing is an exercise that is performed to attain the realism in a scene. In easy way Ray Tracing is a worldwide illumination based rendering technique used for generating views of a virtual 3-D scene on a computer. Ray tracing is nearly allied to, and is an extension of ray-casting, a general hidden-surface erased technique. It tries to mimic actual physical effects related with the propagation of light. Ray tracing handles shadows, multiple specular reflections, and texture mapping in an extremely simple straight-forward manner. So, the crux is "Ray tracing is a method of generating realistic images through computer, in which the paths of individual rays of light are followed from the viewer to their points of origin". Any program which implements these techniques of ray tracing is ray tracer. One of the prime benefits of method of Ray tracing is, it makes use of the actual physics and mathematics behind light. Therefore the images generates can be strikingly, life-like, or "photo-realistic".

In this topic we will discuss the basic ray-tracing algorithm. This will also illustrate the concept behind anti-aliasing, a process for enhancing the realism of an image through smoothing the jagged edges caused through the digital nature of computer-displays. This section will not consider any discussions of the more advanced characteristics of today's ray- tracers, as motion blur, depth of field, penumbras as soft shadows, radiosity or texture mapping.

Consequently to precede the journey of ray tracing we will start along with basics as idea of scene and explain its basic elements. Along with this as a foundation, this will then introduce ray casting, and then ray tracing as an extension of ray casting. At last, the section will discuss the fundamental concepts behind anti-aliasing like a meaning of enhancing the realism of an image and will then decide with an overview of how and where actually ray tracing is utilized.

Posted Date: 4/5/2013 3:56:02 AM | Location : United States

Related Discussions:- Ray tracing - polygon rendering and ray tracing methods, Assignment Help, Ask Question on Ray tracing - polygon rendering and ray tracing methods, Get Answer, Expert's Help, Ray tracing - polygon rendering and ray tracing methods Discussions

Write discussion on Ray tracing - polygon rendering and ray tracing methods
Your posts are moderated
Related Questions
1. What is the purpose behind the Staircase effect? Ans. The approximation concerned in the calculation for finding of pixel position concerned in the display of lines and th

Rotation about the origin - 2-d and 3-d transformations Specified a 2-D point P(x,y), which we need to rotate, along with respect to the origin O. The vector OP has a length '

QUESTION 1. Describe two methods for converting 16x9 widescreen movie to 4x3. 2. Explain clearly the difference between File Format and Codec. 3. What is a video transiti

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

What is view distance?  The view plane normal vector is a directed line segment from the view plane to the view reference point. The length of this directed line segment is ref

Problem with Interpolated Shading There are several more shading models that intermediate in complication among Gouraud and Phong shading, linking the liner interpolation of t

Persistence: How long they continue to emit light (that is, have excited electrons returning to the ground state) after the CRT beam is removed. Persistence is defined as the ti

QUESTION (a) In Automatic Contrast Adjustment briefly explain how to stretch an image to its full intensity (b) Write down a mathematical function of a Modified Automatic Con

Different types of Simulating Motion - Computer Animation Here we discuss different ways of simulating motion as: a. Zero Acceleration or Constant Speed b. No