Computer Graphics - Graphics Concepts

The clarity of a displayed image depends on the

A.	resolution
B.	floating point precision of the system
C.	associated software
D.	All of these
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	Option: D Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

Which of the following is an odd function?

A.	f(x) = x²- \| x \|
B.	f(x) = sin (x) + cos (x)
C.	f(x) = (x) (a^x + 1) / (a^x- 1)
D.	none of the above
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	Option: D Explanation : f(x) = x² - I x l and f(x) =(x) (a^x + 1) / (a^x -1) are even functions, because f(x) = f(-x) . f(x) = sin (x) + cos (x) is neither even nor odd as f(x) ≠ f (-x) and - f(x) ≠ f (-x) Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

In the raster-scan method for transformation, a 90° rotation can be performed by

A.	reversing the order of bits within each row in the frame buffer
B.	by performing XOR on the frame buffer location
C.	by copying each row of the block into a column in the new frame buffer location
D.	none of the above
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	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

In the clipping algorithm of Cohen and Sutherland using region codes, a line is already clipped if the,

A.	codes of the end points are the same.
B.	logical AND of the end points code is not 0000.
C.	logical OR of the end points code is 0000.
D.	Both (a) & (b)
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	Option: D Explanation : Click on Discuss to view users comments. suni nair said: (6:17pm on Saturday 23rd November 2013) sir..i think all options are correct.a) if the code of both enpoints are same then lne is in any one region.ie. either completely outside or completely inside.b)this is the condition when a line is trivially rejectedc) this is the condition when a line is trivially accepted.so here no need of clipping Write your comments here: Updating your Comments.. Updating your Comments..

10:

Choose the functions that are periodic.

A.	f (x) = x - [ x ]; where [ x ] stands for the greatest integer ≤ x
B.	f(x) = \| cos (x) \|
C.	Both (a) & (b)
D.	f(x) = sin ( 1 / x ) , if x ≠ 0 ; 0 otherwise
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	Option: C Explanation : For f ( x ) = x - [ x ]; where [ x ] stands for the greatest integer ≤ x, solving the equation f ( x + T ) = f (x), we get T= 1 as the period. f(x) = \|cos (x) \| is periodic with period π n.f(x) = (x) cos (x) and f(x) = sin ( 1 / x ) if x ≠ 0; 0 otherwise are not periodic. Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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