CCTV

Clearfix
Fri
30
Sep
JohnA's picture

NYPD To Install CCTV Cameras In All Police Vans

CCTV for all NYPD vans
CCTV for all NYPD vans

NYPD is spending $US250,000 to install CCTV cameras in every police van by the end of 2016. All future vans will come equipped with cameras.

“This is not a direct result of the Freddie Gray situation but we wanted to take a look at prisoner safety and at officer safety,” says NYPD deputy commissioner Stephen Davis. 

“A lot of times you have a lot of prisoners in the back of the van and no officer. We have to worry about keeping an eye on them - there’s also the possibility of an escape.”

To avoid injuries, police are told to help arrested suspects into and out of the vehicles because they are high off the ground, and suspects are rear-cuffed and sometimes wearing leg restraints.

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Fri
16
Sep
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D-Link Vigilance DCS-4802E Camera Review

D-Link DCS-4802E IP66-rated outdoor mini dome camera
D-Link DCS-4802E IP66-rated outdoor mini dome camera

D-Link Vigilance DCS-4802E is a compact IP66-rated 1080p dome camera with a highly adjustable axis supported by an integrated 20m IR array. It features a wide angle of view, low distortion and reasonable performance for street, external residential and small commercial applications. 

D-Link’s DCS-4802E is an IP66-rated outdoor mini dome camera that’s part of the company’s Vigilance PoE series of surveillance cameras. It’s compact – the camera is just 113mm in diameter, 85mm high and weighs in at 370 grams. Input is 12V DC and 1.5A, with a power consumption of 5.2 watts. Features include integrated IR array offering a viewing range of up to 20m, motion detection, built-in 802.3af compliant PoE module and ONVIF compliance.

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Fri
26
Aug
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Platinum AV Integrates Mobotix, Vibaro, QCamPro at Lily's

Lilys Restaurant and Function Centre, Seven Hills
Lilys Restaurant and Function Centre, Seven Hills

Platinum AV has installed a Mobotix IP surveillance system at Lily’s in Sydney’s Seven Hills. The system includes automation, intercoms, external and internal cameras with edge storage, a dedicated network and remote and local management using mobile devices running the Australian-developed QCamPro app. 

LILY’S restaurant, bar and function centre at Seven Hills in Sydney’s west incorporates 5 modern function rooms, 2 dedicated ceremony areas and an Italian restaurant. Arriving early, I spend 10 minutes wandering through the internal spaces, which revolve around a bar, pizza kitchen and large restaurant. It’s bigger than I expected. When you’re looking at video surveillance applications, the first place you look is the ceilings and I can see this is a brownfield site. New Mobotix cameras are dotted here and there across a ceiling populated by an installation of older, bulkier compact domes.  

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Fri
19
Aug
JohnA's picture

Special Report: Mobile CCTV Command Centre

Mobile CCTV Control Centre
Mobile CCTV Control Centre

Intelligent Security Integration’s Mobile CCTV Command Centre got plenty of attention at Security 2016. The unit combines multiple integrated fixed and PTZ HD cameras, 360-degree 4K cameras, thermal cameras and 8 deployable cameras with video and manpower management. It’s the attention to detail that transfixed the crowd. The MCCC is thoughtfully conceived and beautifully executed. 

MOBILE command centres are not a new concept by any means and we’ve seen a number of mobile trailers at security shows over the years that are designed to push intelligence gathering outside of built spaces. But none of these units can compare with the Intelligent Security Integration’s van-based Mobile CCTV Command Centre, which combines the latest video surveillance and communications technology to create remote area security for events and other applications. 

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Tue
02
Aug
JohnA's picture

Dealing with Lens Compression in Powerful PTZs

Uniview 44x PTZ
Uniview 44x PTZ

Q: I was interested to read in Help Desk last month the points made about the challenges of context when wide angle camera views are being used. Does the same type of issue apply with longer views and is there a way to deliver context in such cases – especially when operators familiar with wider ‘parked’ camera views start going from wide to long with 36x optical PTZs?

A: Yes, you’re quite correct – compression is a great strength of longer lenses in some applications but it can confuse if operators are unfamiliar with its effects. Once you get past the hyperfocal distance of a 36x zoom you’ll get pedestrians at 40m, diners outside a café at 65m and situational awareness in the compact-seeming but profoundly deep field of view behind both – out to 100m and more.

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Mon
25
Jul
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Hikvision 4K 36x PTZ - Resolution and Reach

Hikvision 4K PTZ
Hikvision 4K PTZ

Hikvision’s new 4K PTZ is a tour de force, combining all the company’s best technologies in a single camera. It melds 4K resolution with a fast F1.5 aperture 6.2-202mm (36x) optical zoom lens, integrated 200m IR, 120dB WDR, IP66 and IK10 ratings, and low light performance down to .02 lux in colour. 

HIKVISION has tipped all its engineering nous into the DS-2DF8836IV-AELW 4K PTZ – this camera is just bristling with tech. I got a look at the handsome new 4096 x 2160 resolution PTZ straight out of the box, having had no fine tuning from the technical team at Hikvision Australia. It would have been great to get hold of Hikvision’s 4K PTZ and undertake a full test but just mucking around in the demo room with the first unit to arrive in the country was highly instructive. 

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Mon
11
Jul
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Challenges of Wide Angle CCTV Camera Views

Wide angle lenses and lens settings have advantages and disadvantages
Wide angle lenses and lens settings have advantages and disadvantages

Q: Would you recommend not using wide angle lenses in many security surveillance applications? What are the advantages and disadvantages of wide angle lenses?

A: Disadvantages of wide angle lenses can include chromatic aberrations, vignetting, excessive barrel distortion and corner softness. And if you need identification, then you need the lens very, very close to the subject. Given the challenges of wide angle views, we’d recommend you cover your operational target area fully but nothing more. For instance, a 130-degree angle of view might be wonderfully dramatic and include huge amounts of detail, but if a large part of that detail includes the walls of adjacent buildings, the foliage of street trees and tens of degrees of empty sky, you’re better to opt for a narrower field of view with a higher concentration of pixels. 

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Fri
24
Jun
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IP Video Streams: Understanding Tone Mapping

Tone mapping showing as halo fore and aft of this fast moving car
Tone mapping showing as halo fore and aft of this fast moving car

Something installers and end users often notice with IP cameras is signs of tone mapping, a technique used in image processing to map adjacent colours in order to reconstruct higher dynamic range in scenes where the limited dynamic range of display media can’t match strong variations of natural light discernible to the human eye. 

TONE mapping, which leaves footprints in the form of a halo effect, or an area of fringing around objects in a scene, is a process by which very high contrast areas in a scene are digitally reduced using algorithms to a displayable range, while retaining as much image detail and colour rendition as possible from the original scene. CCTV people see more tone mapping characteristics than they realise, including halos around dark or moving objects and a Claymation-like appearance in scenes stressed by very strong backlight. 

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Wed
22
Jun
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FLIR’S Acquisition of High End Camera Maker ISD Shows Intent

ISD has made some noteworthy CCTV cameras, including Jaguar
ISD has made some noteworthy CCTV cameras, including Jaguar

FLIR has acquired camera manufacturer, Innovative Security Designs, as part of a move to expand its optical camera range. But the move also highlights FLIR’s expectation of where the video surveillance market is heading. 

In recent times FLIR has acquired mass market CCTV provider, Lorex, and high end VMS and camera manufacturer, DVTEL. The acquisition of ISD is another step in rounding out FLIR’s optical camera offering but not in the most obvious way. ISD is small, with its most market penetration in the United States. FLIR suggests the acquisition fills a gap in its mid to high-end offering and while that’s true, ISD’s cameras are not the optical equivalents of benchmark products from tech houses like GBO. Furthermore, DVTEL made some lovely high end cameras in its own right. 

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Sun
12
Jun
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Most Important Quality of an IP CCTV Camera?

Sensor performance key to IP camera performance
Sensor performance key to IP camera performance

If all other things were generally equal, which single quality is most important for a video surveillance camera?

A: You must answer this question from an operational perspective. The most important qualities depend on what the CCTV camera is being used for – a camera might be used for real time situational awareness supported by security patrols and operators wielding high resolution PTZs but more often it will be used as a post-event forensic tool.

A camera used for investigation needs to provide a well-compressed, high quality image stream in order to meet its operational priorities. If image clarity - taking into account contrast, colour rendition, low light and backlight performance – are equal, then image sharpness and resistance to motion blur are the most important qualities a camera can have from a security operations perspective.

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