cg mid marking scheme
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JSPMs
Rajarshi Shahu College of Engineering, Tathawde, Pune 33
Department of Information Technology2011-12
Mid Term Test Marking Scheme
Class: S.E Date: 07/02/12
Subject: Computer Graphics Max Marks: 50Time: 9.00 am to 10.30 am
Instructions: Draw neat diagrams wherever necessary.
Q1) Explain the concept of display file structure (10M)
Ans:Explaination with diagram 10 Marks
Q2) Draw and explain the following input devices:
1) Trackball 2) Joystick 3) Mouse 4) Light pen System
(8M)
Ans: 1) Explaination of Trackball with diagram ---2M
2) Explaination of Joystick with diagram ---2M
3) Explaination of Mouse with diagram---2M4) Explaination of Light Pen with diagram---2M
OR
Q3) Explain why Computer Graphics is emerging as an important
field in computer science (10M)
Ans: Explaination of computer graphics --5MExample ---5M
Q4) Write a short notes on: (8M)(1)Scanner (2) Digitizer (3) Display file Interpreter (4) Tablets
Ans: 1) Explaination of Scanner with diagram ---2M2) Explaination of Digitizer with diagram ---2M
3) Explaination of Display File Interpreter with diagram---2M
4) Explaination of Tablet with diagram---2M
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Q5)Explain Bresenhams line drawing algorithm. Using Bresenhams algorithm drawline from (1, 1) to (5, 3) (10M)
Ans:1) Explaination of Bresenhams line drawing algorithm ---6M
2) Drawing line from (1, 1) to (5, 3) ---- 4M
Q6) Explain Raster and Random Scan, Line and Text Style (8M)
Ans : 1) Explaination of Raster Scan ---2M
2) Explaination of Random Scan ---2M
3) Explaination of Line---2M4) Explaination of Text---2M
OR
Q7) Explain DDA line drawing algorithm. Using DDA algorithm draw line from (1, 1) to
(5,3) (10M)
Ans: 1) Explaination of DDA algorithm ---6M
2) Drawing line from (1, 1) to (5, 3) ---- 4M
Q8) What is pixel? What is the importance of using frame buffer? It is dynamic storagestructure? Differentiate between Bresenhams and Vector Generation Algorithm( (8M)
Ans: 1) Explaination of Pixel ---2M2) Dynamic storage structure-- 2M
3) Differentiate between Bresenhams and Vector Generation Algorithm 4M
Q9) Explain the followingcharacter generation techniques (8M)
(1)Stroke Method (2) Starburst Method (3) Bitmap Method
Ans : 1) Explaination of Stroke Method ---3M
2) Explaination of Starburst Method ---3M
3) Explaination of Bitmap Method----2M
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Q10) Explain w.r.t.2D transformation
(1)Scaling (2) Rotation (3) Translation (8M)
Ans : 1) Explaination of Scaling Technique ---3M
2) Explaination of Rotation Technique ----3M
3) Explaination of Translation Technique ---2M
OR
Q11) With neat diagram explain the concept of Monochrome and Color display
Monitor (8M)
Ans : 1) Explaination of Monochrome Display ---4M
2) Explaination of Colour Dia Technique ----3M
Q12) Explain Primitive Operation (8M)
Ans: Explanation of Primitive Operation with diagram -----8M