180 degree camera without blind spot, 2x 3.6 mm Fixed lens, 420 TVL, Day & Night, 3-AXIS Bracket

The DM-DO 380ET 180 Degrees security camera is equipped with
two 3.6mm fixed lens, covering 180 degrees each, giving limitless
observation of 360 Degrees, “Cutofless” panoramic viewing angle.
The 1/3�? Sony Super HAD CCD with ultra high resolution of 420TV
Lines gives crystal clear image quality.

More Fearutes:

  • Angle Free 180˚ Camera
  • Video Out (Video1, Video2)
  • Limitless Observation Angle 180˚+ 180˚ (360˚)
  • Viewing Angle Without Blind Spot
  • Cutofless Panoramic Viewing Angle
  • Best Observer in Anyplace
  • Extremely Low Power Consumption
  • 1/3 Sony Super HAD CCD
  • Day / Night Capability
  • Ultra High Resolution of 420TV Lines
  • 3-AXIS Bracket (included)
  • * Need TWO available Video Inputs

Road & Highway Surveillance Car License Plate Reading Box Camera, 1/3 Sony Super HAD Color CCD, 540 TVL, 0.15Lux, Dual Voltage, Up to 90MPH

The DM-CO 2002LPH is an intelligent vehicle license plate
reading box camera featuring a built-in CAR-DC Iris Control
technology which allows the camera to achieve reliable car
license plate recognition for roads surveillance of a car speed
up to 90mph. With Sony HQ1 producing excellent images of
540 lines of resolution, it also has a low lux rating and Digital
Noise Reduction function built-in. This security camera auto
detect the voltage (12V DC/24V AC).

More Features

  • 1/3″ Sony Super HAD CCD
  • 540 TVL, 0.15 Lux
  • DSP: Sony HQ1
  • Automatic Day & Night Function
  • Dual Voltage 12VDC/24VAC
  • Built-in Intelligent Shutter (CAR-DC Iris Control) Capturing License Plate for Vehicle Speed up to 90mph
  • C or CS mount for lens

1.3M Pixel IP Camera, 700 TVL, Dual Codec, Two way audio, Low bandwidth usage, Day and Night

GeoVision, the name brand in CCTV security, introduce the DM-IP-13GV IP CCTV Camera with 1.3 Mega pixels, providing detail not seen on conventional surveillance cameras

the DM-IP-13GV allows users to monitor critical areas with greater detail than ever. Moreover, with simultaneous/dual video stream and support for compliant Power-over-Ethernet (PoE), it allows users to view both MJPEG images and MPEG-4 videos with improved efficiency while conserving valuable bandwidth.

Progressive scan CCD captures the entire scene of a moving object at the same time. Even and odd fields are scanned simultaneously.

Heater Blower Outdoor w/ Housing, 1/4″ SONY Super HAD Exview CCD 470 TVL, 0LUX 84 Infrared LED’s up to 180ft

The DM-IR 25HOHB is a one of a kind solution designed to solve the problem of mounting an IR camera inside a housing. The DM-IR 25HOHB has a heater and blower to out stand severe weather, the IR LED’s are mounted at the front of the housing for clear illumination of up to 180 feet, and the camera offer crystal clear resolution of 470 TV lines, a 6.0-15.0 mm Vari-Focal Auto Iris Lens. This camera work on 24V AC.

Great for Winter and Summer weather conditions

Triplex 16Ch Security DVR System, H.264 Hardware Compression, 480 FPS Display, 240FPS Recording, 16CH Video, 1CH Audio

The DM-DV-APO264/16 features the industry’s first full-scale Real-Time 16Ch H.264 hardware compression standalone DVR. According to extensive laboratory and field testing, recorded data based on H.264 is 4.5 times smaller than typical MPEG-4, or 3 times smaller than conventional MPEG-4 codec. The hardware codec of DM-DV-APO264/16 truly is superior in all aspects of performance, delivering your experience through remote PC access or DSP-based H.264 services or smart phone are phenomenal.

It also Comes In 4 Channels & 8 Channels
Specifications

  • 16 Channel Video Inputs / 1 Channel Audio Input
  • H.264 hardware-based codec for superior video compression
  • Real-Time 16 Channel display at 480 FPS / IPS Total
  • Customizable Channel Rotation Delay
  • Supports Hi-resolution VGA monitors and 16 channel loop back composite monitors
  • Intelligent Video Motion Detection (VMD)
  • Audio, Alarm I/O & RS-232, RS-485 PTZ Camera Interface
  • Local backup via USB-based storage media or CD/DVD writer
  • SATA interface for high-speed reliable recording on HDD
  • Wide system integration (SI) capabilities
  • User-friendly OSD operation with 15 languages support
  • Web-based H.264 surveillance client software or Web Services
  • Feature-rich remote management & surveillance software

Integrated Remote System

  • Web-based surveillance anywhere
  • Microsoft Windows XP (and Higher )
  • Remote management
  • Remote monitoring
  • Remote playback
  • Remote search
  • Remote backup

Close Range License plate Capture camera, 8mm fixed lens, up to 5 MPH and 16.5 ft, 12 IR LED’s, bracket included

The DM-IR 85LPH is a close-range license plate capture security IR camera that provides high quality plate images in day or dark conditions. Powerfully effective and user friendly, the DM-IR 85LPH is ideal for meeting the surveillance needs of gated communities, gas stations, bars, drive-through locations, casinos and toll gates.

This IR security camera is working on 12V DC and the bracket (which features a hidden cable mount) is included.

It’s powerful features include the ability to capture the license plate of a car moving up to 5 MPH, and it’s 8.0 mm fixed lens allow the capture of plates with a distance of 16.5 ft.

Indoor/Outdoor Housing w/ Heater and Blower, Invisible Cable

The HO-619HB is a security camera housing made of durable, lightweight Polycarbonate. Its installer friendly design includes a patented quick mount bracket to effortlessly adjust a camera. It also offers a flip-up cover that opens 180 degrees for easy installation and accessibility. This housing accommodates small to large CCD zoom lens cameras. Its sleek modern design complements any surrounding. The blower for this model snaps right into place and includes an external filter panel to quickly replace. It comes equipped with Heater and Blower to protect the security camera from extreme weather.

132 High Illuminator LEDs, Auto Switch mode, 200 ft range

The Auto switch mode turn on the LED’s as soon as it turns dark. It is made of sturdy aluminum and come with a metal bracket, ideal for outdoor installations. It is powered by 12V 1200mA.

The DM-IL-50IH is the perfect solution for your IR illumination needs. This security IR Illuminator has a powerful 132 LED’s capable of illuminating up to 200 feet.

Also other features are:

  • 132 High Illumination LED’s
  • Auto Switch mode
  • Max Range: 200 ft.
  • Power Supply 12V, 1200mA
  • Weather Proof
  • Sun Shield
  • Aluminum Cylinder housing with metal bracket

Motion Detection in surveillance

Motion Detection in surveillance was design to optimize the recording and storage in surveillance system and security DVR. Video motion detection (VMD) is a way of defining and comparing activity in a scene by analyzing frames captured from the security cameras, and analyzing differences in a series of frame images. This functionality is usually built in to the DVR and not to the security camera, as most people think. Motion detection zones can help define area in the picture which will trigger the recordings, the zone selection or masking can let you to define areas of the screen where you want to detect or ignore visual changes.

dvr_surveillance22.jpg

Security DVR (digital video recorder) systems
Most security DVR and surveillance system, there are cameras connected to a DVR, which performs the capturing of images and recording them to a hard drive from each security camera video stream. Motion Recording allows the security DVR to decrease the amount of recorded video, and optimize the recordings by recording only when motion activates, this technology use motion in a specific area of the image as a search term when searching for events. When a change between the frames is detected the DVR will capture and record the frames to the hard drive and will stop recording after number of seconds after the motion stops. Motion recording optimize hard drive storage and is benefit the user when searching recorded event. You can easily detect and search a recorded event during night time when you don’t need to watch whole night recording to find if there was any activity at night, so it’s simplifies activity searches in recorded material.

Surveillance system recording

Video Compression for Surveillance System

Video compression become an hot topic of the month for a long time yet,. We originally produced an article on compression and recording in the 2007, when it really was very much in headlines of DVR and Security camera product topics.We thought video recording compression in CCTV would develop at a rate comparable with the PC and video industry but this has not happened. The PC industry and processors have increased tenfold in power and speed at significantly lower prices. One area of great interest to digital video images is the capacity of hard disc drives.

There was a lot of progress has been behind the scene with developments of DVR and Surveillance system with various compression techniques to, create more efficient surveillance system with smaller file sizes. It may be worth revising some of the techniques involved in video compression for surveillance systems. The following is a brief review of principles and Practice of CCTV.

Principles of Video Compression.

In Video compression technology each field is divided in to an array of individual points or pixels. At each of these points, converters convert voltages representing the color and brightness at that point to a binary digital number. This array of binary digital numbers can then be stored digitally in memory with a name cross referenced against time and date. A single frame of monochrome video use about 450Kb (Kilobytes) of space for storage and single frame of color needs about 650Kb. This is the uncompressed frame size that would be needed for storage on hard disc..

For example to store a video length of a videotape, we will need a total storage capacity of about 300GB (Gigabytes) would be needed for one camera. This is considerably very large hard discs for a camera for 2 hours of recording. The technique of reducing the amount of space required is generally referred to as video compression.

The video picture frame contains a large amount of redundant information in surveillance DVR that can be eliminated without a great loss in perceived picture quality. A common types of compression used are MPEG, MPEG2000, MPEG4, H-264. Most compression methods are effective up to a certain point, before image quality quickly degrades.

To reduce the amount of size required to store the video signal can be represented in a form known as YUV. The YUV format consists of the Y (luminance) and UV (color difference) signals. The advantage of using YUV format is that fewer bytes are needed to digitize the video. Normally, recording all of the color base components; red, green, blue would need three bytes, one byte for each color. If we are using YUV format the luminance can be digitized as one byte and the color difference signal as one byte. Which mean that we need only two bytes rather than three, a saving of one third of the storage space required? This technique can be used together with compression to minimize the hard drive usage.

Type of Video Surveillance Compression.

The most known used standard compression for Security DVR and surveillance systems are, JPEG, JPEG2000, MPEG4, H264. Using JPEG compression can compress about 15:1 compression. Another more recent compression standard was devised by the Motion Picture Expert Group specifically for the digitization of moving images. This standard is given the name MPEG. This standard makes use of the redundancy between adjacent frames.

MPEG-1 contains three types of encoded frames. This type of compression contains all of the video information required to make a complete picture. Predicted frames are generated by previous I-frames or P-frames and are used to generate future P-frames. Bi-directional Predicted frames are generated using both previous and future frames. A complete sequence of frames is made up of a series of these different frame types with more than one I-frame for every 10 P- or B-frames. This process is known as inter-frame and allows compression ratios of 100:1.

MPEG-2 is the most common format used in the latest DVD technology, which can store about 90 minutes of VHS quality video and audio on to only 600Mb of disk space, such as a CD-ROM. MPEG has number of disadvantages to MPEG compression. Firstly, in order for MPEG to achieve high compression it needs the video signal not to change abruptly from frame to frame. Since many video recording applications require multiplexing because more than one camera must be recorded, the rapid change from frame to frame as cameras are switched defeats the inter-frame correlation technique used in MPEG.

MPEG-4 is the most popular compression for security DVR and surveillance systems; it uses media objects to represent aural, visual or audiovisual content. Media objects can be synthetic like in interactive graphics like in digital television. These media objects can be combined to form compound media objects. MPEG-4 multiplexes and synchronizes the media objects before transmission to provide QOS (quality of service) and it allows interaction with the constructed scene at DVR machine.

Compression organizes the picture frames in a hierarchical fashion where the lowest level has primitive media objects like still images, video objects, and audio objects. MPEG-4 has a number of primitive media objects which can be used to represent 2 or 3-dimensional media objects. MPEG-4 also defines a coded representation of objects for text, graphics, synthetic sound, talking synthetic heads.

Visual part of the MPEG-4 standard describes methods for compression of images and video, compression of textures for texture mapping of 2-D and 3-D meshes, compression of implicit 2-D meshes, and compression of time-varying geometry streams that animate meshes. It also provides algorithms for random access to all types of visual objects as well as algorithms for spatial, temporal and quality scalability, content-based scalability of textures, images and video. Algorithms for error robustness and resilience in error prone environments are also part of the standard.

For synthetic objects MPEG-4 has parametric descriptions of human face and body, parametric descriptions for animation streams of the face and body. MPEG-4 also describes static and dynamic mesh coding with texture mapping, texture coding with view dependent applications.

Security DVR Compression