WIRELESS VIDEO SENSOR NETWORKS - univ-pau.fr
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WVSN: Challenges & design WVSN: Challenges & design space space WIRELESS VIDEO SENSOR NETWORKS FOR SURVEILLANCE APPLICATIONS Contact: Congduc Pham - url: http://www.univ-pau.fr/~cpham Provide Quality Provide Quality of Service: of Service: reliability reliability , , availability availability , , multi-resolution multi-resolution Take into account the needs Take into account the needs of of the the applications! applications! Multi-views Multi-views for for scene disambiguation scene disambiguation , , heterogeneity and multi-tiers organization heterogeneity and multi-tiers organization With scalar sensors With scalar sensors , , event event ’ ’ s s position position determines the determines the set of active set of active sensor sensor . Not . Not true anymore with video sensors true anymore with video sensors Coverage is Coverage is more more complex complex , , determination determination of of which sensor which sensor to to wake wake up up is is not trivial not trivial as as pan-tilt-zoom features increase the pan-tilt-zoom features increase the number number of of eligible sensor nodes eligible sensor nodes On-the-fly deployment of environmental monitoring network Real-time organization and optimization of rescue in large scale disasters DISTRIBUTED SYSTEMS NETWORKING HARDWARE ALGORITHMS APPLICATIONS EVALUATION AND SIMULATION 128x128 140x140 240x240 Cyclops video board on Mica motes Wireless Video Sensor Networks (WVSN) Research in Wireless Sensor Networks Communication Field of View Mobility? θ 1 ) , ( y x P = Pan-Tilt-Zoom camera Z Pan Tilt θ 2 (Zoo m) N(P, Θ 1 , Θ 2 , Z) Scalar value of some simple environmental parameter Simple rectangular or circular geographical sensing area Same sensed value in any direction No mobility A pan-tilt cyclops Scalar sensor nodes 18 19 M 22 25 24 26 27 28 29 30 Internet 20 C2 Sleep mode failure t acc. RULE 1 RULE 1 : : don don ’ ’ t t miss important miss important events events ! ! RULE 2 RULE 2 : : high-quality high-quality not not necessary good necessary good ! ! RULE 3 RULE 3 : : don don ’ ’ t put t put all all your eggs your eggs in in the same the same basket! basket! t light Accelerometer could serve as detector if the sensor is kicked by the intruder Light sensor could serve as detector if the intruder rapidly occult the sensor Impl-indepent. services Software architecture, middleware, supervision&control, adaptative components, optimization, heuristic… SURVEILLANCE Critical application QoS continuity Collaborative sensors Training and kwowledge
Transcript of WIRELESS VIDEO SENSOR NETWORKS - univ-pau.fr
WVSN:Challenges&designWVSN:Challenges&designspacespace
WIRELESS VIDEO SENSOR NETWORKSFOR SURVEILLANCE APPLICATIONS
Contact: Congduc Pham - url: http://www.univ-pau.fr/~cpham
Provide Quality Provide Quality of Service: of Service: reliabilityreliability,,availabilityavailability, , multi-resolutionmulti-resolution
Take into account the needs Take into account the needs of of thetheapplications!applications!
Multi-views Multi-views for for scene disambiguationscene disambiguation,,heterogeneity and multi-tiers organizationheterogeneity and multi-tiers organization
With scalar sensorsWith scalar sensors,, eventevent’’s s positionpositiondetermines the determines the set of active set of active sensorsensor. Not. Nottrue anymore with video sensorstrue anymore with video sensors
Coverage is Coverage is more more complexcomplex, , determinationdeterminationof of which sensor which sensor to to wake wake up up is is not trivialnot trivialas as pan-tilt-zoom features increase thepan-tilt-zoom features increase thenumber number of of eligible sensor nodeseligible sensor nodes
On-the-fly deployment ofenvironmental monitoring network
Real-time organization and optimizationof rescue in large scale disasters
DISTRIBUTEDSYSTEMS NETWORKING
HARDWAREALGORITHMS
APPLICATIONS
EVALUATION AND SIMULATION
128x128
140x140
240x240
Cyclops video board on Mica motes
Wireless Video Sensor Networks (WVSN)
Research in Wireless Sensor Networks
Communication Field of View
Mobility?
θ1
),( yxP =
Pan-Tilt-Zoomcamera
Z
Pan
Tiltθ2
(Zoom)
N(P, Θ1, Θ2, Z)
Scalar value of some simpleenvironmental parameter
Simple rectangular or circulargeographical sensing area
Same sensed value in any direction
No mobility
A pan-tilt cyclops
Scalar sensor nodes
H
68
18
19
M
22
25
24
26
27
28
29
30
Internet
20C2
Sleep mode failure
t
acc.
RULE 1RULE 1: : dondon’’t t miss important miss important eventsevents!!RULE 2RULE 2: : high-quality high-quality not not necessary goodnecessary good!!RULE 3RULE 3: : dondon’’t put t put all all your eggs your eggs in in the same the same basket!basket!
t
light
Accelerometer could serve as detector ifthe sensor is kicked by the intruder
Light sensor could serve as detector ifthe intruder rapidly occult the sensor
Impl-indepent. services
Software architecture, middleware,supervision&control, adaptative
components, optimization, heuristic…
SURVEILLANCE
Critical application QoS continuity
Collaborative sensors
Training and kwowledge
