|
|
The new video surveillance encoding technology
Posted: October 23, 2014
|
|
Due to the growing demand for network monitoring, stimulating the majority of machine vision companies, especially industrial camera manufacturers trying to network cameras respect to development, but also indirectly contributed to the development of network video encoder, video encoder current network has made single video transmission capabilities, and gradually developed into a network with WIFI with local SD card storage, or USB storage or IDE hard disk storage; transmission channel from the original single evolved into: Quad CIF single D1, two HD1, and multi-channel multi-compatible integrated system menu operation and management. Currently, the network video encoder also from a simple communication cable network, and gradually developed into: wired and wireless WIFI (802.11abg Protocol) compatible, the maximum transmission distance of the wireless signal from the original 100 meters, has evolved into the current 50 km. The encoder signal or data is compiled out of the transmission device after conversion. Network Video Encoder Encoder only after the adoption of the development which is a very common application, and successfully applied to the network device to obtain the majority of understanding and application of electronic engineers.
Adaptability is the impact of network monitoring devices can achieve important factor in the development and popularization of faster, therefore, the next will be a lot of network adaptability technology has been applied to the front and management platform IP video encoder is no exception. In these networks adaptive technology, the three aspects of the storage, transmission, management-related should be the most urgent. Associated with the storage network adaptive technologies mainly ANR, ANR's premise is a video encoder supports local storage, while a central storage system deployment. Network is normal, all the video in the center is completed; when the network fails, the video encoder supports ANR and central management platform will also detect the failure and establish their own time-related logs, while the video encoder to start local recording, using its built-in storage medium storing; after the network is restored, the video encoder and the central log management platform to establish the respective comparison data than the network fails to check then the video encoder will be uploaded to the local video store central storage device, automatically deletes local video when finished. ANR technology on the one hand can improve storage reliability, on the other hand can ensure the integrity and unified management of video files; network adaptive technologies and transmission-related rate adjustment mainly refers to technology. Network is normal, the video encoder to encode normal flow rate uploaded monitoring center platform code; When the network is congested, the video encoder automatically detects congestion, and then automatically adjust video resolution, video frame rate encoding parameter code stream bandwidth adjustments to ensure stable upload stream monitoring; when the network is restored, the video encoder and then automatically restore the previous coded transmission; adaptive network technology and management related mainly refers to human design. When congestion occurs, prompt managers to be able to take the initiative and browsing personnel and records; front-end video encoder IP address conflicts with other devices, to be able to have some mechanism to inform the central management platform, the platform initiative prompted by the relevant staff and records, etc. and so on.
In the video transmission process requiring images without distortion, the number of bits transmitted on the big picture, in the network bandwidth in certain circumstances, to reduce the stream of video images has become an important technology. From the coding framework for, H.265 still follows the hybrid coding framework of H.264, but each has to enhance or improve the technical details. Improvement is relatively large: in the image block and the motion compensation, transform, the support of larger size and type; additional intra / inter-frame prediction, motion vector prediction and conversion mode; increase in the sampling loop adaptive filtering SAO; provided TILE mode, better support for parallel processing. The application of new technologies, not only to effectively improve the compression performance, but also for a variety of processor-based platform to achieve effective expansion space.
|
|
|
|
|
| | | Posted By: | ShenZhen Apexis Electronic Co.,Ltd | | Description: | Apexis is a high-tech company specializing in manufacturing ip cameras.supply ip camera,network camera,surveillance camera,wireless ip camera,wireless webcam,security ip camera,wifi ip camera,mini ip camera,poe ip camera,box ip camera,ptz ip came... | | Phone: | 86-755-26509025 | | Storeboard City: | Beijing, China | | Website: | http://www.apexis.cc | |
|
|
