topical media & game development

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

Information Spaces

information spaces

multimedia information systems
query mechanisms
visual interfaces and presentation

from: S.K. Chang and M.F. Costabile -- Visual Interfaces to Multimedia Databases

The Handbook of Multimedia Information Management

advances in

storage technology -- multimedia databases
wideband communication -- distribution accross networks
parallel computing -- voice, image and video processing
graphic co-processors -- visual information with high image quality

applications

multimedia information systems

geographical information systems
office automation
distance learning
health care
computer aided design
scientific visualization
information visualization

multimedia databases

special requirements

size of data
synchronization
query mechanisms
real time processing

query mechanisms

relevance feedback
user-guided navigation

query mechanisms

free text search
SQL-like querying
icon-based techniques
querying based on ER-diagrams
content-based querying
sound-based querying
query by example
virtual reality techniques

(multiparadigmatic) visual interface

visual query language -- VQL, VQS
visual representation and interaction
icons, diagrams -- interaction

design criteria

seamless combination of query mechanisms
visual user interface
visual relevance feedback
user-guided navigation

information space

In a visual interface for multimedia databases, the information stored in the database needs to be visualized in an information space.

users conceptualization of the databases
system generated visualization

logical information space

represents abstract database objects

physical information space

materialized as: images, animations, video, voice, ...

information spaces

mimic -- virtual reality or reflect -- diagrams, icons, sketches

information spaces

The logical information space is a multidimensional space where each point represents an object from the database.

unified view of the database

dimensions = attributes

continuous, numerical, discrete or logical

database object

or example, is a point in (logical) information space

query

is an arbitrary region in this information space

clue

is a region with directional information, to facilitate browsing

both examples and queries are clues

the information retrieval problem

to construct the most desirable query with respect to the examples and clues presented by the user.

most desirable query

is the one that will retrieve the largest number of relevant database objects and whose size in the information space is relatively small

visual reasoning may help the user ...

information hyperspace

the logical information space may further be structured in a logical information hyperspace, where the clues become hyperlinks that provide directional information, and the information space can be navigated by the user following directional clues.

information is chunked, and each chunk is illustrated or made accessible by an example (hypernode) ...

one step further

let's present information in a virtual reality information space (3D)

example

physical location of medical or student records

VU Campus

[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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Information Spaces

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advances in

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applications

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multimedia databases

query mechanisms

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design criteria

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logical information space

physical information space

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dimensions = attributes

database object

query

clue

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most desirable query

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example

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