Determine the comparison of gouraud and phong shading, Data Structure & Algorithms

Assignment Help:

Comparison of Gouraud and Phong Shading

Phong shading requires more calculations, but produces better results for specular reflection than Gouraud shading in the form of more realistic highlights. Consider the specular reflection term in Eq. (3.4) :

cosn (s)

If n is large (the surface is a good smooth reflector) and one vertex has a very small value of s (it is reflecting the light ray in the direction of the observer) whilst the rest of the vertices have large values of s - a highlight occurs somewhere on our polygon. With Gouraud shading, nowhere on the polygon can have a brighter colour (i.e. higher value) than a vertex so unless the highlight occurs on or near a vertex, it will be missed out altogether. When it is near a vertex, its effect is spread over the whole polygon. With Phong shading however, an internal point may indeed have a higher value than a vertex and the highlight will occur tightly focused in the (approximately) correct position.

 

 


Related Discussions:- Determine the comparison of gouraud and phong shading

Write an algorithm for binary search, Q.1 Write procedures/ Algorithm to in...

Q.1 Write procedures/ Algorithm to insert and delete an element in to array. Q.2. Write an algorithm for binary search. What are the conditions under which sequential search of

Usage of linked lists for polynomial manipulation, Q. Establish the usage o...

Q. Establish the usage of linked lists for polynomial manipulation.                                       Ans. Usag e of Linked List for Polynomial Manipulation. Link

A difference between linear and non linear, state difference between linear...

state difference between linear and non linear data structure. give one example scenario of each

Implementation of a binary tree, Like general tree, binary trees are implem...

Like general tree, binary trees are implemented through linked lists. A typical node in a Binary tree has a structure as follows struct NODE { struct NODE *leftchild; i

Sequential search of a list is preferred over binary search, What are the c...

What are the conditions under which sequential search of a list is preferred over binary search? Sequential Search is a preferred over binary search when the list is unordered

Singly linked list , The two pointers per number of a doubly linked list pr...

The two pointers per number of a doubly linked list prepare programming quite easy. Singly linked lists as like the lean sisters of doubly linked lists. We need SItem to consider t

Algorithms for push and pop operation, Q. Suggest a method of implementing ...

Q. Suggest a method of implementing two stacks in one array such that as long as space is there in an array, you should be capable to add an element in either stack. Using proposed

Indexed sequential file organisation, When there is requirement to access r...

When there is requirement to access records sequentially by some key value and also to access records directly by the similar key value, the collection of records may be organized

Multiple stacks, how multiple stacks can be implemented using one dimension...

how multiple stacks can be implemented using one dimensional array

Array, extra key inserted at end of array is called

extra key inserted at end of array is called

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