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Reg No.:_. Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
SEVENTH SEMESTER B.TECH DEGREE EXAMINATION(R&S), DECEMBER 2019

Course Code: CS401
Course Name: COMPUTER GRAPHICS

Max. Marks: 100 Duration: 3 Hours
PARTA
Answer all questions, each carries 4 marks. Marks
1 Suppose you have a raster system designed using an 8 inches x 10 inches screen (4)

with a resolution of 100 pixels per inch in each direction. What frame buffer size

is required if 6 bits are stored per pixel in the buffer?

2 Write the midpoint circle drawing algorithm. (4)
3 a) List the advantages of using Bresenham’s line drawing algorithm. (2)

b) What is the purpose of a frame buffer in a display system? (2)
4 How does Cohen Sutherland algorithm determine whether a line is visible, (4)

invisible or a candidate for clipping based on the region codes assigned to the

end points of the line?

5 A triangle ABC with coordinates A(0,0), B(6,5), C(6,0) is scaled with scaling (4)
factors Sx=2 and Sy=3 about the vertex C(6,0). Find the transformed coordinate
points.

6 Write the 3D translation matrix for moving an object by -2 units, -4 units and-6 (4)

units respectively in x, y and z directions.
7 Describe Histogram and also the type of information which obtained froma gray (4)

level histogram

8 Briefly describe the various classification of the visible-surface detection (4)
algorithms.
9 Is there any point at which a set of projected parallel lines appears to converge? (4)

Justify your answer.
10 What is edge detection? Explain any one edge detection technique in digital (4)
image processing.
PART छ
Answer any two full questions, each carries 9 marks.

11 a) Describe in detail about emissive and non-emissive flat panel displays. (5)

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