1. Discussion Class 9
Informedia

2. Discussion Classes Format: Question
Ask a member of the class to answer
Provide opportunity for others to comment
When answering:
Give your name. Make sure that the TA hears it.
Stand up
Speak clearly so that all the class can hear

3. Question 1: Content and Context
"The Informedia processing provided state of the art access to video by content. Current efforts will communicate information trends across time, space, and sources by furthering analysis and understanding of the context as well as the content."
(a) What does the word content mean in this paragraph?
(b) What does the word context mean in this paragraph?

4. Question 2: Automated Extract of Text
Informedia extracts text automatically from video in three different ways.
(a) What are they?
(b) How effective would you expect each to be for
information retrieval?

5. Question 3: Speech recognition and retrieval performance
What does the following graph tell us?

6. Question 4: Browsing
(a) Informedia provides multiple levels of abstraction and summarization. Why?
(b) Describe the function of each of the following:
i visual icons
ii one-line headlines
iii film strip views
iv video skims
v transcript following of audio track
(c) How is each produced?

7. Question 5: Image Understanding
What role does image understanding perform in each of the following in Informedia?
(a) scene break detection (icon selection, film-strip and
skimming, segmentation)
(b) image similarity matching
(c) camera motion and object tracking
(d) video-OCR
(e) face detection and association

8. Question 6: Scalability
Throughout the article there are mentions of scale.
(a) What has the project done to evaluate scalability?
(b) What are the weaknesses that might prove difficult on a larger scale?

9. Question 7: Overall Informedia had the following objectives:
(a) retrieval performance in the presence of inaccuracy and ambiguity
(b) approximate match in meaning and visualization
(c) presentation and reuse of video content as a new data type with space and time constraints
(d) interoperability in the presence of restricted use intellectual property and the absence of data and protocol standards.
How well has each been achieved?