CCTV Camera Component and Technology Imaging sensor Optic - Lens Camera Technology IP vs analogue...
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Transcript of CCTV Camera Component and Technology Imaging sensor Optic - Lens Camera Technology IP vs analogue...
CCTV Camera Component and TechnologyImaging sensor
Optic - Lens
Camera Technology
IP vs analogue CCTV
Uniview IPC features
Fundamental of CCTV
1/2"
6.4mm
4.8
mm
1/3"
4.8mm
3.6
mm
1/4"
3.6mm
2.7
mm
CCD / CMOS image sensorCCD - Charge-Coupled Device
CMOS - Complementary metal oxide semiconductor
CCD / CMOS available in difference size
What is real time video ?
Optic / LensDetermine the coverage
Lens type – Auto Iris / Manual Iris / Fixed Iris
What do you need to see?ClassificationTarget can be distinguished between human and animal. (i.e. an upright human or animal walking on four legs)
DetectionA target is determined to be present in the camera’s field of view. (i.e. something in the field of view is present and/or
moving)
RecognitionHuman target is determined to be a threat by the type of clothing and/or equipment being carried. (i.e. friend or foe)
IdentificationHuman target can be identified as a specific individual. (i.e. a specific person)
Camera Technology
Day / Night Switching
Wide Dynamic Range
Light Sensitivity – Lux
Resolution – Megapixel / HD / 4 CIF
True B/W Mode with IR filter removed
Sensitivity increase in mono mode
DinionXF Day/Night Color Mode DinionXF Day/Night Mono Mode
Day/Night Switching
Wide Dynamic Range Technology
Enhance the image when the camera is capture the image with the uneven light and strong back light.
Illumination - LuxCamera output signal standard is 1 Vpp (full video)
IRE (Institute of Radio Engineers) value
The full signal is 140 IRE (1 Vpp)
The video part is 100 IRE
The synchronization part is 40 IRE
Examples of light intensity
Situation Illuminance (lux)
Summer afternoon, open air , no clouds 40,000 - 100,000
Summer afternoon, indoors 1,000 - 3,000
Office with very good lighting 800
Sunrise, sunset 500
Average street lighting 10 - 20
Twilight 5
Full moon, no clouds 0.25
Video Resolution
Video Streaming
Video Compression Technique
Advantage
Introduction to the IP Imaging Technology
What is IP CCTV / IPVS ?
Utilized the advantages of IP network, computer hardware and software.
Live and Recorded Video are fully encode into digital format !
IP Camera are addressable, can be access anywhere
UTP Cable
UTP Cable
Video Streaming
Video streaming using unicastUnicast – the sender will sent a video to the receiver that request the video, Max 5 receiver.
Video stream 1
Video stream 2
Video stream 3
Video streaming using multicastMulticast – the video will distribute by switcher to a set of receiver, Max 50 receivers with RCP+ Protocol.
Broadcast – the video will distribute by switcher to a set of receiver, Unlimited receivers .
Video CompressionImage over
compress
Joint Photographic Experts Group – JPEG
Motion-JPEG compression technique -Compress each video frame separately into JPEG image
-Priority is given to image resolution – cause longer image delay over low bandwidth.
-Every images have a consistent file size
Key Advantages
-Technology is simpler, can lower the price for the hardware.
MPEG Compression Technique
Advantages of IP Network Video
• Accessibility
• Simplified installation at lower costs
• Scalability / Flexible
• High Video quality
IP CCTV Analogue CCTV
Resolution 4K 8MP or higher 2 MP
Accessibility Anyway via IP address
Unlimited Distance
Require DVR or video server
Video Sharing Unlimited user Limited user
Image format Fully Digital video from IP Cam
Analogue video
Cost Saving Single Cable – CAT5e
Coaxial, Rs485/RS232, Power
Cable
Future Expansion Yes - E-license Hardware limitation
IP vs. Analogue
High definition Video
VGA 640x480HD 720 1280x720
1.3MP 1280x960
HD 1080 1920x1080
3MP 2048x1535
Resolution
HD vs. Megapixel
HD MPMaximum Resolution
2.1 MP 16 MP
Video Format 1280 x 7201920 x 1080
Many more formats
Aspect Ratio 16:9 4:3, 5:4 16:9
Frame Rate (high) 30/60 (lower) 3 – 15
Imager compliance
Complies to quality
standards
NoneImplies # of
pixels
HD is a type of MP camera. All HD Cameras are MP. Not all MP cameras are HD.
Question
1. How far the camera can see ?
2. How clear is your camera image ?
3. How long can the video record ?
4. What compression technique Uniview IPC use ?
5. What is the different between HD and Megapixel IPC ?
6. What is the advantage of the IP CCTV against Analogue CCTV?
7. What is the purpose for the Infra – red illuminator ?
8. What is the advantage of the Wide Dynamic Range ( WDR) ?
9. What type of lens will use for detection purposed ?
10. How Many frame per second for real time video ?
Thanks