(ELEC360)quiz2a.pdf - HKUST Pastpaper

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(ELEC360)quiz2a.pdf
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Hong Kong University of Science & Technology Department of Electrical & Electronic Engineering
ELEC 360: Digital Media & Multimedia Applications
Fall 2002
Name: _______________________________ Student ID: ___________________________ E-mail: ______________________________
Quiz #2A (14th November, 2002)
1.
If figure 1 is the starting key frame of an animation sequence, which of the following picture is the most likely ending key frame?

2.
What kind of 2D animation transition can be used in a visually pleasing manner between figure 1 and the picture you select in Question 1?

3.
When we use a web browser to `surf the internet via the dial-up (i.e. phone line-based connection to the internet) TCP/IP network, which of the following data layer contains the IP address of the source?

a.
Application layer (i.e. web browser)

b.
Ethernet data frame

c.
TCP layer

d.
IP layer

4.
In a corporate internet environment, it is common not to allow any web browser to `surf the internet directly. An intermediate agent called `proxy server is used as shown in the following figure. Name one of the reasons for deploying the `proxyserver.

5.
XHTML is essentially a reformulation of HTML 4.0 as an application of XML. In XML, its syntax, or loosely speaking, its gramma r, is tightly enforced. As such, all the bad habits or invalid syntax (so called ill-formed HTML) are no longer tolerated. In the following ill-formed HTML body, name one ill-formed aspect.

<body bgcolor = `#fffff0>

This is the first paragraph


This is the second paragraph

 This is the third paragraph
6. Which one of the following tools does not belong to SGML?
a.
XML

b.
SVG

c.
SMIL

d.
Macromedia Flash

e.
MathML

7.
What is the difference between the HTTP `GET and `POST request?

8.
Which 3D transformations (maybe more than one) does the following matrix operation represent?

0 0 3 1
a.
Scaling

b.
Bending

c.
Translation

d.
Rotation about the y-axis

e.
Rotation about the z-axis

9. For the specular reflection of a perfectly uniformly flat surface shown in the following figure, the angle of incidence of the light, qi, is
. . . . ..
a.
greater than

b.
equal to

c.
less than

the angle of reflection, qr.
.

cos(q )
-

sin(q )0
Z Z
. . . .o

sin(q ) cos(q )0
Z Z
0 01

0
00

10.
Image compression generally makes use of a spatial transformation and some statistical coding technique. In JPEG, DCT (discrete cosine transform) and Huffman coding are used respectively. What kind of spatial transformation and statistical coding technique are used in JPEG2000 compression?

11.
Given a point object (i.e. a single point with no width, height or depth) at (0,0,0) in the world co-ordinate system (WCS), write down the matrix transformations which would