Challenges in Electronic Roads in the Information society: ContentBased Image Retrieval and IP DiffS


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Challenges in Electronic Roads in the Information
society Content-Based Image Retrieval and IP
DiffServ

• ERIS
• UCY
• Y. Mylonas C. Pattichis A.Pitsillides S.Panis

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Introduction

• Network Diagram
• The second attached postscript file
• Firstly two scenaria will be presented in order
  to show the envisaged benefits of ERIS and then
  the technical infrastructure for the digital
  library and network will be discussed HOW DID
  YOU GET THE FOLLOWING RESULTS FOR SCENARIO A AND
  B IF HYPOTHETICAL THEN HOW DO YOU JUSTIFY
  THEM STATE CLEARLY WHAT OYOU MEAN

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Current infrastructure Scenario A

• Client A places request to
• Search by text akamas
• Results Presented to the Client Screen
• 10 images
• 8 audios
• 5 videos
• 10 text documents

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Current infrastructure Scenario B

• Client D places request to
• Search by text Limasol
• Results Presented to the Client Screen
• 20 images
• 6 audios
• 7 videos
• 12 text documents

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Current Infrastructure issues

• Some problems that the clients might run into
• Not enough bandwidth to receive all the media
• Cant search by content the multimedia library.
• No Quality of Service offerred to the user.

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Scenario A under ERIS

• Client A places request to
• Search by text akamas
• Results Presented to the Client Screen
• 5 images
• 2 audios
• 1 video
• 3 text documents

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Scenario B

• Client D places request to
• Search by text Limasol
• Results Presented to the Client Screen
• 5 images
• 2 audios
• no video
• 12 text documents

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Advantages under ERIS

• Advantages of using ERIS are
• The media are filtered before presented to the
  client.
• We can search by content.
• There is Quality of Service based on the network
  status and bandwidth availability

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Information Unit
Identifier
Metadata
Actual Content
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System Architecture
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Content-Based Image Retrieval Module

• CBIR
• Embedded in Information Unit Selector
• CBIR capabilities
• Search by color
• Search by texture
• Search by shape

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Content-Based Image Retrieval

• Extraction of features

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Dublin Core Data Model

• Basic Metadata
• Name
• Identifier
• Version
• Registration
• Language
• Definition
• Obligation
• etc

• System Metadata
• Resolution
• Frames/sec
• Size of media
• Color parameters
• Shape parameters
• etc

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System-Based Refiner

• The System-Based Refiner filters out the no
  important IUs.
• QoS
• It is used to manage the network resources more
  efficiently by using a set of performance
  characteristics
• Two types of QoS
• Resource reservation (integrated services)
• Prioritisation (differentiated services)
• These QoS protocols complement each other.

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QoS Characteristics

• Service availability
• Delay
• Delay variation
• Throughput
• Packet loos rate

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IP QoS Protocols

• ReserVation Protocol (RSVP)
• Differentiated Services (DiffServ)
• Multi Protocol Label Switching (MPLS)

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DiffServ

• Traffic is classified at the edge router.
• Uses the eight-bit IPv4 type of service (ToS)
• ToS is used as a marker to signal to the routers.
• ToS was renamed to DS (Differentiated Services)

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DiffServ

• Expected to be used at the enterprise backbones
  and in service provider networks.

CU
DSCP
CUcurrently unused (2 bits) DSCP Diff-Serv code
point (6 bits) DSCP101100 indicates EF
(Expedited Forwarding) DSCP000000 indicates DE
(best effort) others still under study
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Database

• Archiving Tool
• Creates and modifies the semantic dictionary
• Creates the relation of the IU based on the
  categories.
• Written in Java.
• Images stored in JPEG format.
• Different formats
• Thumbnail format
• 120x179 pixels
• Videos stored in MPEG-2 format

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Integration of CBIR and IP QoS

• Using the
• User Profile
• Proposed profile
• Recorded previous steps
• Network status
• Available Bandwidth
• Round-trip time delay
• Transfer time
• The requested data
• System Metadata
• Pre-recorded features

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Conclusions

• CBIR is needed for easier navigation and search.
• QoS is a necessity.
• IP QoS is on its way but still need a lot of work
  to be able to give good results.
• DiffServ and MPLS appears to be promising for
  delivering IP QoS.