Published on March 13, 2014
CCTV Requirements Gathering
• The business requirements will form the basis of future projects and will determine the eventual scope. • If a ‘need’ is not raised as a requirement, the project will not know that the system must perform an action- therefore it will not be included within the scope of the project or included within the end solution. • The requirements will be base-lined at the end of the Initiate Phase. Any requirements submitted after this date will not be accepted without a change request and associated funding (where applicable). • The identified business stakeholders are responsible for ensuring that all requirements are raised during the Initiate Requirements gathering process. The Importance of Requirement Gathering
• Review each area of CCTV functionality. • Prepare a set of draft CCTV BUSINESS requirements for each of the functional areas. • Agree a priority for each draft requirement. • Agree next steps, actions and areas for further investigation. Workshop Objectives
Defining the Problem
• What types of threats are experienced? • What is the level of threat experienced? • Where are the threats experienced? • What are the current security issues? • What other tactics are used other than CCTV to tackle the threat? • How often do threats occur? • What is the impact of the threats? • What is the impact of not tackling the threat? • How is success measured by the security teams? Defining the Nature of the Threat- Discussion
Recognise •Figure occupies at least 50% of the screen height. •Observers should be able to say with certainty whether or not an individual shown is the same as someone they have seen before. Identify •Figure occupies at least 100% of the screen height. •Picture quality and detail should be sufficient to enable the identity of an individual to be established beyond reasonable doubt. Observe •Figure occupies at least 25-30% of the screen height. •The characteristic details of the individual can be seen whilst the view remains wide enough to allow some activity surrounding the incident to be monitored. • Which of the categories best reflects the type of activity being observed? Observation Categories Monitor & Control •Figure occupies at least 5% of the screen height. •The observer should be able to monitor the number, direction and speed of people movement across wide area. Detect •Figure occupies at least 10% of the available screen height. •The observer should be able to search the display screens and ascertain with a high degree of certainty whether or not a person is present.
• Which of the categories best reflects the type of activity being observed? Observation Categories
• Who will be responsible for monitoring the CCTV? • Who needs access to view the CCTV? • When will the footage be monitored live? • How long should footage be accessible? • What happens when an event occurs? When is a response required and what should the response be? Operational Practice- Discussion
• What locations should be monitored? • For each location- what is the threat being monitored? • For each location- what is the purpose of the observation? • For each location- how fast will the subject be moving (frame rates) Locations for Monitoring- Discussion
• What types of camera should be used?- e.g. bullet, PTZ, dome, indoor, outdoor, vandal resistant etc • Are infra-red cameras required? If so, what locations? • What image resolution is required? Pixels & TVL? • What Lens/ Aperture Types should be used? • What Shutter Types and Speeds should be used? • What types of sensors should be used? • What field of view is acceptable? Types of Camera- Discussion
• Should cameras be Digital or Analogue? • Should IP cameras be used? • What frame rates should be achieved? Types of Camera- Discussion Cont…
• What standards should be in place for camera locations? • Considering: • Field of View • Variations in light • Foliage • Blockages • Maintenance- i.e. cleaning • Power • Fixings • Concealment • Security • Height Camera Placement- Discussion
• What is the minimum light level required? Day and night? • What is the advised scene contrast levels? Lighting- Discussion
• How should footage be transmitted? What video signal type? • What level of link security is required? • Should the system be wired or wireless? Transmission- Discussion
• Should the system provide automatic alerting functionality? • If so, What activity should trigger an alert? • If so, What form should the alert take?- audible/ visual alert, text message, emergency relay, record event, display event, register in audit log etc Alerting- Discussion
Recording, Exporting & Archiving
• How long should the footage be retained before being overwritten? • Should certain pieces of footage be protected from being overwritten? • What image quality is required for recorded image? • What frame rate is required for recorded image? • What additional information should be recorded with the footage (meta data)? Recording- Discussion
• Should it be possible to export the footage? • Who should be able to export the footage? • How should data be exported? What security should be available? What reporting? • Who should be able to access to export? • How should the exported footage be replayed? • What size clips should be exportable? Exporting & Archiving- Discussion
• What types of compression methods should be used? • Is interframe compression acceptable? • What level of data compression is acceptable? What is the minimum image quality? • What compression CODEC should be used? Compression- Discussion
• What storage capacity is required? Storage- Discussion
Legal/ Regulatory Requirements
• What licensing regulations apply to the CCTV system? • What legal requirements exist?- Data Protection Act, Freedom of Information Act etc Legal/ Regulatory- Discussion
Security Control Room
• Where should the control room be located? • What size and shape of room is acceptable? • What lighting and ventilation requirements exist? • What security should be in place in the control room? • Proximity of the control room to the locations being monitored? Security Control Room- Discussion
• How will the images be viewed? • How many screens are required? What is the maximum number of screens to be monitored by one operator? • How many cameras per display screen? • What type of screen display should be used? (CRT, LCD, Plasma etc) • What size screens should be used? • What heat generation is acceptable? Display- Discussion
• How should the screens be positioned? • How many cameras should be shown at one time? • Should multi screen, multi view be available? • How many screens are required? Erognomics- Discussion
• What maintenance is required? • What support should be provided? • What maintenance requirements exist? • What support requirements exist? Maintenance- Discussion
• Should footage/ data be shared with third parties? • What reference databases should the system be linked to? • Should the information exchange be multi directional? Links to Reference Databases
Video Surveillance Management Systems
• Where should operatives be able to access footage?- in the CR? Remotely? On the Go? • What should operatives be able to do remotely? • What reporting should be available? • What analytics should be captured? • What information should be stored on individuals/ suspects? • What trends should be monitored? VMS- Discussion
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