LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034 M.C.A. DEGREE EXAMINATION - COMPUTER APP. FOURTH SEMESTER – APRIL 2012 CA 4803 - COMPUTER GRAPHICS AND MULTI-MEDIA Date : 20-04-2012 Time : 1:00 - 4:00 Dept. No. Max. : 100 Marks PART-A Answer all questions: 10 X 2=20 1) What is difference between Pixmap and Bitmap? 2) What are the methods of Text clipping? 3) Give the matrix format for scaling the image. 4) What is the use of Vertex table? 5) Define Morphing. 6) Compare the RGB and YIQ color models? 7) Define Dithering 8) List the entire image and graphics format. 9) State the two architectural subsystems of Multimedia Communication System. 10) Comment on VRML. PART-B Answer all questions: 5 X 8=40 11) a) Discuss the role of video controller in Raster Scan Systems with a neat diagram. (or) b) Explain the DDA line drawing algorithm. 12) a) Write short notes on Splines. (or) b) Give a detailed description on Polygon tables. 13) a) Explain Scan line Method for detecting visible surface (or) b) Describe the Parallel and Perspective projection with a neat diagram. 14) a) Explain all the steps for Computer Image Processing. (or) b) Explain the basic concepts of Computer based Animation. 15) a) Write short notes on Virtual Reality. (or) b) Explain the Basic synchronization issues in Multimedia systems. PART-C Answer any two Questions: 2 X 20=40 (Q. No.16 is compulsory) 16) a) Explain the principle and working of refresh CRTs. b) Discuss two dimensional Transformations in detail. 17) a) Explain any two Color Models. b) Discuss MIDI in detail. 18) a) Explain the Session management in MCS. b) Explain the characteristics of MDBMS. **************