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10000CS401122002

Explain the steps involved in edge detection.
PART ‏تا‎
‎Answer any two full questions, each carries 9 marks.
With the help of a neat diagram explain the working of a Direct View Storage
Tube display.
Write the difference between emissive and non-emissive flat panel displays with
suitable examples.

Derive the initial decision parameter of midpoint circle drawing algorithm.

Use mid-point circle drawing algorithm to plot a circle whose radius is 10 units
and centre is at (20,10).
Explain the working of (i) Digital glove (ii) Light pen
Show how coherence property can be utilised in the calculation of intersection
of edges with scan lines in scan line polygon filling algorithm?
PART C

Answer any two full questions, each carries 9 marks.

Perform the following transformations on a line with end points A(10, 20) and

B(40, 30). Draw the result of each transformation. Apply the second
transformation on the result of first and third on the result of second
transformation.

i) Scale the object two times in x-direction and three times in y-direction.

ii) Rotate the object by 90° Anticlockwise about origin.

111) Translate one unit in x-direction and two units in y-direction.

Explain how Mid-point subdivision algorithm is used for clipping a line

segment.

Illustrate the clipping of the polygon shown in figure against the rectangular
clipping window using Sutherland Hodgeman algorithm. Draw the intermediate

results also.

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