Reg. No. :

M.C.A. DEGREE EXAMINATION, FEBRUARY/MARCH 2018.

Second Semester

DMC 7204 — COMPUTER GRAPHICS AND MULTIMEDIA SYSTEMS

(Regulations 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 2 = 20 marks)

1. What are the basic line attributes?

2. What are the types of clipping?

3. What do you mean by homogeneous co-ordinates?

4. Distinguish between window port and view port.

5. What are the uses of chromaticity diagram?

6. What is morphing?

7. Compare gif and jpeg image format.

8. Define the term authoring.

9. What is virtual reality systems?

10. What are the multimedia file formats?

PART B — (5 × 13 = 65 marks)

11. (a) Define Clipping. Write and explain Cohen – Sutherland line clipping

algorithm. (13)

Or

(b) Explain Bresenham’s Line drawing algorithm. (13)

Question Paper Code : J1360

J1360 2

12. (a) Explain Basic two dimensional Transformations in detail. (13)

Or

(b) Outline the various interactive input methods. (13)

13. (a) Briefly explain different color models in detail. (13)

Or

(b) (i) Explain the difference between perspective projection and parallel

projection. (6)

(ii) Define rendering. Explain the concept of polygon rendering

technique. (7)

14. (a) Explain the basic Building blocks of multimedia with a neat sketch. (13)

Or

(b) (i) Write note on animation. (6)

(ii) What are the basic tools that are required for the multimedia

Software? Explain in detail. (7)

15. (a) Explain the Multimedia communication system in detail. (13)

Or

(b) (i) Explain the synchronization issues in multimedia communication

systems. (7)

(ii) Discuss how multimedia data can be stored in databases. (6)

PART C — (1 × 15 = 15 marks)

16. (a) Outline the concept of key frame systems and animation functions.

(7 + 8)

Or

(b) Write note on :

(i) Applications of multimedia (7)

(ii) Video-on demand. (8)

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Reg. No. :

M.C.A. DEGREE EXAMINATION, AUGUST/SEPTEMBER 2017.

Second Semester

DMC 7204 –– COMPUTER GRAPHICS AND MULTIMEDIA SYSTEMS

(Regulations 2013)

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PART A — (10 2 = 20 marks)

1. What are the advantages of Bresenhams over DDA approach in line drawing?

2. Where is Antialiasing used?

3. Given a triangle with vertices A(1, 1) B(6, 1) C(3, 5). Calculate the transformed

vertices after applying a translation factor of 2 in x axis and 3 in y axis.

4. List the characteristics of Bezier curves.

5. Write down the classification scheme in projections.

6. Differentiate morphing and warping.

7. How is analog audio converted to digital audio?

8. Write down the advantages of TIFF images.

9. List the trends in collaborative computing.

10. Specify the hardware and software components needed to create a video

conferencing environment.

Question Paper Code : BS2360

BS2360 2

PART B — (5 13 = 65 marks)

11. (a) (i) Discuss in brief different picture construction techniques.

(ii) Given a window A(20, 20) B(60, 20) C(60, 40) D(20, 40). Use Cohen

Sutherland line clipping algorithm to find the visible portion of the

line P(30, 50) Q(70, 30) inside the window.

Or

(b) (i) Rasterize and find the coordinates of a dotted circle using mid point

circle drawing algorithm for radius 6 and centre point (5,5).

(ii) Discuss on two main classes of hardware devices used for user

interaction.

12. (a) (i) Give an algorithm to fit a 2D smooth curve through a number of

given points. Your algorithm should ensure that the fitted curve

actually passes through all the points.

(ii) Find out the single transformation matrix required to scale a unit

square by a factor of 2 along its diagonal.

Or

(b) (i) Derive the window to viewport transformation function in general.

(ii) What are spline curves? How an they created and represented I

graphics?

13. (a) (i) A unit cube is projected onto the XY plane under parallel projection

whose direction of projection is (1, 1, 1). Obtain the projection of

cube with the coordinates.

(ii) Discuss on kinematics and inverse kinematics as used in animation.

Or

(b) (i) Explain the process of eliminating hidden surfaces from three

dimensional objects using any algorithm.

(ii) Discuss on the different types of visualizations based on the data

types.

14. (a) Explain text encoding formats, text representation formats and typefaces

used in text in detail.

Or

(b) Discuss on video compression methods in detail.

BS2360 3

15. (a) (i) Discuss on any two transport layer protocols used for multimedia

transmission.

(ii) Compare Virtual reality with Augmented reality.

Or

(b) Write short notes on:

(i) Multimedia synchronization

(ii) Multimedia databases

(iii) Quality of service parameters.

PART C — (1 × 15 = 15 marks)

16. (a) How video conferencing is done to conduct a forum?

Or

(b) How XYZ and RGB models work in coloring? Explain.

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