Ch. Charan Singh University 2007 B.C.A Computer Application Computer Graphics - Question Paper

BCA (IV Sem.)

B.C.A Examination, Dec-2007
Computer Graphics
(BCA-403)
Time: 3 Hours Maximum Marks: 75

Note: Attempt any 5 ques.. All carry equal marks.

1. (a) What is Computer Graphics? explain the different uses of Computer Graphics.
(b)Explain Character generation and Flat Panel displays.

2. (a)Explain the following:
(i) Raster Scan display and Random scan display.
(ii) Line Plotting and Point Plotting Devices.
(b)What are the functions of Display processor Unit (DPU)? discuss the use of CRT also.

3. (a)Resolution of a RGB Monitor is 1024 x 1024 and every colour is stored in eight bits, compute.
(i) Size of Frame Buffer
(ii) Total shades of colours that can be displayed by the system.
(iii) No. of Scan lines.
(b)Explain refresh and storage displays.

4. (a) explain 2 basic techniques for producing color displays with a CRT.
(b)Resolution of B/W system is 640 x 480 and total 32 shades of gray can be displayed by the system .calculate.
(i) Size of Frame Buffer
(ii) No. of bits needed to info of one pixel.
(iii)If refrest rate is 25 C/s, then compute time to access a pixel.

5. (a)Explain the purpose of color look up table? explain an algorithm for the implementation of color look up table.
(b)Discuss Bresenham’s algorithm.

6. (a)What is antialiasing? explain 3 ant aliasing techniques.
(b)Write Midpoint circle algorithm. discuss it with the help of an example.

7. (a) define the Sutherland-Hodgman algorithm for line clipping.
(b)With the help of a block diagram discuss the hardware for interactive computer graphics system.

8. (a) elaborate the 3 basic geometric 2D transformations? What is inverse Transformation?
(b)Explain the concept of window and viewpoint.

9. (a) What is 3D Transformation? explain an algorithm for spline curve.
(b)What do you understand by hidden line removal? Write buffer algorithm for hidden line removal.

10. Write short notes on any 3 of the following:
(i) Parallel and perspective projection
(ii) Animation and rendering
(iii) Shadow maste technique
(iv) Fractals

Earning:   Approval pending.