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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER IV • EXAMINATION SUMMER- 2017
Subject Code: 341602 Date: 03 05 -2017
Subject Name: Computer Graphics
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1

Explain the major application areas of computer graphics.
07





What is Image Processing? Explain how computer graphics is useful for Image Processing.
07



Q.2

Define following:
1. GUI 2. Aspect Ratio 3. Persistence 4. Refresh Rate
5. Horizontal Retrace 6. Vertical Retrace 7. Bitmap
07







Write down the difference between Random Scan and Raster Scan display.
07



OR

List out and Explain Hardcopy and Input Devices.
07



Q.3

Explain Digital Differential Analyzer Algorithm.
07





Explain 8 point Boundary Fill Algorithm.
07



OR
Q.3

Write down the steps for Bresenham's line generating Algorithm.
07





Explain Odd Parity rule for Inside-Outside Test.
07



Q.4

Explain 2-D Translation, Rotation and Scaling Transformation.
07





Prove that Two Successive Scaling Operations are Multiplicative.
07



OR
Q.4

Explain Sutherland-Hodgeman Polygon Clipping Algorithm.
07





Explain Liang-Barsky Line Clipping Algorithm.
07
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Q.5

What is Projections? Explain Parallel Projection in detail.
07





Explain 3-D Reflection and Shear Transformation.
07



OR
Q.5

Explain Depth Buffer method of hidden surface removal
07





What is Illumination? Explain Ambient Light and Diffuse Reflection.
07