NATIONAL OPEN UNIVERSITY OF NIGERIA

UNIVERSITY VILLAGE, PLOT 91, CASDASTRAL ZONE, NNAMDI AZIKIWE EXPRESS WAY, JABI, ABUJA.
FACULTY OF SCIENCES
SEPTEMBER/OCTOBER 2015 EXAMINATION

COURSE CODE:                                                                              CIT 891                                                               

COURSE TITLE:                                                                             Advanced Multimedia Technology

TIME ALLOWED:                                                                          2½ Hours

INSTRUCTIONS:                                                                            Answer any Five Questions

1a.          State and write short notes on any two home television distribution standards. How are they

different?                                                                                                                                                                            (11 marks)

b.            State any three desirable Features for a Multimedia Computer.                                                               (3 marks)

2a.          Write short note on run-length encoding.                                                                                                           (5 marks)

b.            Using run length encoding, encode the following binary image.                                                               (3 marks)

                                1 1 1 0 0 0

                                0 1 1 1 1 1

                                1 1 1 1 0 1

                                0 0 1 1 1 1

                                1 1 0 0 0 0

                                1 0 0 0 0 1

c.             A method of  encoding is to encode each row as a list of pairs of numbers; the first number in each pair gives the starting position of  a run of 1’s and the second number its length. Using this method, give the binary image of the code below:

                                (33) (1241) (1361)(25)(15)(2252)                                                                                                         (6 marks)

3a.          Write short notes on the three types of text that are processed by a multimedia computer          (9 marks)

b.            State five of the challenges facing multimedia systems                                                                                                   (5 marks)

4a.          Write short notes on each of the following:                                                                                                       (10 marks)        i.                Discrete Cosine Transform (DCT)

                                ii.            Discrete Fourier Transform (DFT)

b.            What are the advantages and disadvantages of compression?                                                                      (6 marks)

6a.          What are the major difference between Vector Quantization and transform coding?                      (4 marks)

b.            State and briefly describe the task involved in image processing                                                             (10 marks)

7a.          List and describe the subclass of image processing                                                                                         (12 marks)

b.            Define multimedia workstation?                                                                                                                               (2 marks)