Question: Examples of multimedia app lications include the following except _
Answer: Malware

Question: The JPEG operation mode which gives a decoded image that is not an exact replica but an approximation of the original image is
Answer: Sequential DCT-Based Mode

Question: Multimedia simply means
Answer: multiple forms of media integrated together

Question: The following can also be used to refer to multimedia except
Answer: none of the options

Question: Multimedia technology refers to
Answer: The hardware, software and techniques used to create and run multimedia systems.

Question: JPEG defines the following modes of operation
Answer: 4

Question: cannot be refered to as an input device.
Answer: none of the options

Question: A multimedia system should have enough memory and support adequate bandwidth / data compression features in order to ….
Answer: Minimize delay

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14/16 AHMADU BELLO WAY, VICTORIA ISLAND, LAGOS

SCHOOL OF SCIENCE AND TECHNOLOGY

MARCH/APRIL 2014 EXAMINATION

COURSE CODE: CIT 891

COURSE TITLE: Advanced Multimedia Technologies

TIME ALLOWED: 2 ½ Hours

INSTRUCTION: Answer any five(5) questions. Each question carries 14 marks.

1. You work at Plus Digital Multimedia. As their manager you are asked to talk about digital and analogue signal conversion: how it is done elaborating on the design of the process (illustrating with diagrams where applicable) (14 Marks)

2. As the multimedia technologist in the company your CEO has requested you to write a summary on the data compression model. Also to advise on implementing/adopting data compression. (Illustrate with diagrams where applicable) (14 Marks)

3. At an interview, the panel asks you to briefly discuss what you understand about digital image processing the steps involved in image processing. (14 Marks)

4. (a.) State the Nyquist s theorem (5 marks)

(b.) In not more than ten lines each, briefly discuss three major system for specifying colours in some standard way which consists of a three dimensional coordinate system and a subspace of that system in which each colour is represented by a single point. (9 Marks)

5. (a.) Briefly define discrete cosine transform (DCT) as relates to Advance Multimedia technologies and discuss its application to JPEG and MPEG (8 Marks)

(b.) Discuss the following (In not more than three lines each):

• Image enhancement (2 Marks)

• Image restoration (2 Marks)

• Image segmentation (2 Marks)

6. (a.) With the use of relevant diagrams briefly discuss “sampling rate” (5 Marks)

(b.) Write short notes on the following picture coding: (9 Marks)

· Intra (I) pictures

· Predicted (P) pictures

· Bidirectional or bidirectionally predicted (B) pictures

7. (a.) Define the term multimedia (2marks)

(b.) List two properties of the two dimensional Fourier transform which are of particular use for image processing (2 marks)

(c.) Draw a well labeled diagram of a typical Still Image Compression Model (6 marks)

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