Just a decade ago security had little claim to criminological attention. Today a combination of disciplinary paradigm shifts, policy changes, and world political events have pushed security to the forefront of the criminological agenda. Distinctions between public safety and private protection, policing and security services, national and international security are being eroded. Post-9/11 the pursuit of security has been hotly debated not least because countering terrorism raises the stakes and licenses extraordinary measures. (more…)
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CCTV: networking and digital technology By Vlado Damjanovski
Posted by admin on June 7th, 2005
CCTV has witnessed a technological leap – using digital imaging techniques and the Internet.
The new edition of this enterprise level reference book retains the particulars that made the first edition such a success, including details of CCD cameras, lenses, coaxial cables, fiber-optics, and system design, but has been expanded to cover video compression techniques used in the ever increasing assortment of digital video recorders (DVRs). It also attempts to clarify data networking.
The theory section details various compression techniques, such as MPEG-1, MPEG-2, JPEG, Wavelet, H.261/263, JPEG-2000, MPEG-4, etc. Networking is also a new and unknown area for many CCTV installers and this is explained in a brand new section.
The challenge of selecting the right system from such a wide variety of new technologies available in CCTV has been compounded by the advent of DVRs.
This new edition of the book CCTV attempts to demystify DVR technology.
- Covers brand new digital video recorder (DVR) compression techniques, image quality, measuring and networking
- Fully illustrated with dozens of photographs, tables, checklists, charts, diagrams and instructions
- Encompasses CCTV standards for U.S., Europe, and Australia