AcuSense is Hikvision’s intelligent video analysis technology based on deep learning algorithms. Classifies targets into three types: human, vehicle, and others. When the operator selects certain object types, AcuSense cameras or NVRs filter the remaining unselected object types, which dramatically reduces the number of false alarms.
AHD (Analog High Definition) is an open analog video transmission standard developed by Nextchip. Allows you to transmit video over a coaxial cable of the RG-6 type at a distance of up to 500 meters, with a picture resolution of up to 8 megapixels (4K) (3840×2160). When using surveillance cameras of the AHD standard, it is necessary that the entire system supports this standard. The AHD standard, in turn, is divided into several subtypes: AHD-L (recording resolution 960H), AHD-M (HD / 720p), AHD-H (FullHD / 1080p).
ANPR (Automatic Number Plate Recognition) is a technology for optical character recognition in images. It is used to solve problems in the road transport sector – access control, collection of road tolls from traffic, law enforcement and search by license plate. Other names: ALPR, VLPR, CPR, LPR.
AGC – Automatic Gain Control. When AGC mode is on, the camera automatically amplifies the video signal as the illumination decreases. Thus, it smooths out the changes in the video signal level and allows you to get a high-quality image on a video monitor at low illumination of the object.
Cloud service with advanced load balancing for round-the-clock monitoring of the Ajax security system
Bitrate – the number of bits used for data transmission / processing per unit of time. It is customary to use the bit rate when measuring the effective transmission rate of a data stream over a channel, that is, the minimum size of a channel that can pass this stream without delays. Bitrate is expressed in bits per second (bit / s, bps), as well as derived values with the prefixes kilo- (kbps, kbps), mega- (Mbps, Mbps), giga- (Gbps) or tera- ( Tbps). In streaming video and audio formats, the “bitrate” parameter expresses the degree of compression of the stream and, thereby, determines the size of the channel for which the data stream is compressed.
There are three lossy compression modes for streaming data:
BLC – Back Light Compensation. The BLC function allows you to clearly see dark objects that appear in front of a blinding background, such as a window.
CCD-matrix (abbreviated from “charge-coupled device”) – a specialized analog integrated circuit consisting of photosensitive photodiodes, made on the basis of silicon, using the technology of CCD devices – charge-coupled devices. The advantages of CCDs include high sensitivity, low noise and high pixel fill factor.
ColorVu is Hikvision’s proprietary technology that allows CCTV cameras to display crisp color images without ambient light. Round-the-clock color observation is provided by a large F1.0 aperture and an ultra-sensitive 0.0005 Lx sensor. The high level of light sensitivity is maintained even in devices with high resolution matrices.
CMOS – Complementary metal oxide semiconductor structure. This is a technology for the production of matrices for video cameras. High speed (up to 500 fps) and low power consumption are the main advantages of CMOS sensors.
CVBS (Composite Video Baseband Signal or Color, Video, Blanking, Sync) is an analog standard for transmitting a composite video signal over an RG-6 coaxial cable over a distance of 300 meters, with a picture resolution of up to 1000 TVL (television lines). 2 formats are used: PAL / NTSC. CVBS is an outdated standard today.
Special mode of operation of the CCTV camera at night. The principle is as follows – when the illumination on the object falls below a certain limit, the camera automatically switches from color (day) mode to black and white (night). This allows you to get a more contrast and detailed picture in low light.
MIFARE DESFire EV1/EV2/EV3 is the standard for contactless smart cards. The operating frequency is 13.56 MHz, and the reading range is up to 10 cm. DESFire cards are the most complex and expensive in the MIFARE family. Fully comply with ISO 14443A standard. There are currently three flavors: DESFire EV1 and DESFire EV2. They offer a crypto-protected (3DES, AES) file system with flexible access conditions. Cards based on MIFARE DESFire EV1 are used to pay for transport in more than 60 cities (incl. San Francisco, Miami, London, Dubai), in several countries (New Zealand, Finland) they are a nationwide standard. MIFARE DESFire EV1 based cards are also widely used for highly secure access control systems.
This is the distance from the optical center of the lens to the focal point of the light rays on the matrix, measured in millimeters (mm). The shorter the focal length of the lens, the larger the angle of view of the CCTV camera. For example, for a lens with f = 2.8 mm, the viewing angle will be larger than for a lens with f = 3.6 mm.
FullColor – это фирменная технология компании Dahua, которая позволяет камерам видеонаблюдения показывать четкую цветную картинку в условиях полного отсутствия внешнего освещения. Возможности круглосуточного наблюдения в цвете обеспечиваются большой апертурой F1.0 и сверх чувствительным сенсором STARVIS от компании Sony с размером 1/2.8 дюйма.
GPRS (General Packet Radio Service) is a technology for wireless packet data transmission in GSM networks, with a declared speed of up to 171.2 Kbps.
GPRS is used to exchange data with other devices in the GSM network and with external networks, including the Internet.
GSM (Global System for Mobile Communications) is a global standard for digital mobile cellular communications with channel division in time (TDMA) and frequency (FDMA). Most GSM networks operate in the 900 MHz or 1800 MHz bands (Europe and Asia). Several generations of development of GSM-networks standards can be distinguished: 2G, 3G, 4G (LTE), 5G. Data transmission via GSM channels is actively used in security systems and is sometimes used in video surveillance.
GPS (Global Positioning System) is a satellite navigation system that measures distance, time and determines the location of objects on Earth. In security tasks, the system is used in GPS trackers, GPS beacons and car alarms.
H.264 (MPEG-4 Part 10 or AVC) is a video stream compression codec that is characterized by a high compression ratio of the original video images while maintaining high quality. H.264 uses blocks of up to 4×4 pixels, with the size of the blocks adaptively resizing for each individual fragment. In scenes with lots of detail or fast moving objects, this produces better image quality. With the same amount of information and image quality, the H.264 archive is on average 30% smaller in terms of the size of the MPEG-4 archive. As a result of optimization of coding algorithms, an improved and more efficient H.264 + codec has appeared.
HD-CVI (High Definition Composite Video Interface) is an analog video signal transmission standard developed by Dahua Technology. Allows you to transmit video over a coaxial cable of the RG-6 type at a distance of up to 500 meters, with a picture resolution of up to 8 megapixels (4K) (3840×2160). When using surveillance cameras of the HDCVI standard, it is necessary that the entire system supports this standard.
HLC (High Layer Compatibility) is a high light compensation technology used to improve the exposure of a frame. Backlight compensation is done by removing from the frame strong light sources, such as car headlights or floodlights that shine directly into the camera at night. These areas are removed with the help of masks, thus the average brightness of the image is reduced and you can see what is happening in the dark areas.
“H.265 is a new video compression technology, also referred to as HEVC (High-Efficiency Video Coding). Comparative tests show that the H.265 video compression codec provides a bandwidth reduction of almost 50% compared to the H.264 codec. Ability means fewer files, which saves 2 times the hard disk space that is required to store video surveillance data. There is also a downside to using H.265 video compression technology. In order to process video in a more efficient way, IP cameras and DVRs must have a more powerful processor.
Hikvision has developed its own compression algorithm based on the H.265 / High Efficiency Video Coding (HEVC) standard. The new compression format is called H.265 +. It allows you to further reduce file sizes without sacrificing quality. “
HD-TVI (High Definition Transport Video Interface) is an analog video transmission standard developed by Techpoint. Based on this standard, Hikvision has released a line of Turbo HD devices. Allows you to transmit video over a coaxial cable of the RG-6 type at a distance of up to 500 meters, with a picture resolution of up to 8 megapixels (4K) (3840×2160). When using HDTVI (Turbo HD) surveillance cameras, the entire system must support this standard.
This is the degree of resistance of the enclosures of electrical equipment to external mechanical influences (shocks). The lowest degree of protection IK00 – no protection. The maximum degree of IK10 is the resistance of the case to a drop of a load weighing 5 kg from a height of 40 cm, the impact energy is 20 J.
ICR (Infrared Cut Removable) – Removable IR cut filter. This is a CCTV camera function designed to increase light sensitivity at night. During the day, with the help of the mechanical input of the IR filter, the correct color rendition is ensured, at night the IR filter is shifted, thanks to which the image is brighter.
The marking of the degree of protection of the shell of electrical equipment in accordance with international standards. It is carried out with the help of an international mark of protection (IP) and two digits (the first means protection against ingress of solid objects, the second – against the ingress of water).
IoT (Internet of Things) is a concept of a data transmission network between physical objects (“things”) equipped with built-in tools and technologies to interact with each other or with the external environment. It is assumed that the organization of such networks is capable of restructuring economic and social processes, excluding the need for human participation from part of actions and operations.
AJAX wireless branded radio technology for stable communication of the Hub with sensors and other Ajax devices. Allows you to transmit data at a distance of up to 2000 m.
This is a characteristic of the sensitivity of the matrix of a CCTV camera, which shows the degree of minimum illumination at which the camera is able to produce a good quality video image – clear and without noise. Measured in Lux (designation: lx, lx) – the unit for measuring illumination in the SI system. The lower the value of this parameter, the higher the sensitivity. The characteristics of cameras always indicate the minimum illumination level at which the ca