The pace of the development of high-speed high-speed ball has not stopped. At present, HD high-speed ball has gradually become the mainstream product in monitoring the market.
High-speed high-speed ball core core components - "high-definition integrated movement"
After years of development of the integrated camera movement, the design of its core technology integrated lens and auto-focus algorithm has been quite mature.
The standard of high-definition integrated lens quality is roughly divided into: optical performance, stability and consistency of key components. The optical performance mainly refers to the resolution of the lens under various optical multiples. Of course, it also includes the seriousness of ghosting, purple fringing, and dispersion. The key components mainly include the aperture, motor, and filter switching components.
After entering the era of high-definition, these technical problems have been resolved quickly. Currently, different products represented by Japanese lenses, Taiwan lenses, and domestic lenses have been formed. Japanese lenses generally perform well in terms of optical performance and stability, but their prices are relatively high. Taiwan's lenses are relatively cost-effective, but their optical performance, especially high-resolution image performance, is insufficient; while domestic manufacturers' one-camera lenses do not perform well in terms of stability and consistency. ideal.
In terms of autofocus algorithms, several major solutions have also been formed. For example, HD autofocus solutions represented by TI's DM368, FPGA and ASIC. The FPGA solution belongs to the hardware circuit implementation mode, and the stability is high. The effect and speed of autofocus are fast. The solution of the DM368 is a software system combined with the implementation of the hardware register. Its autofocusing effect is relatively good, but the speed and stability The sexual aspect needs to be tested; the ASIC solution is a hardware circuit with a simple software approach to achieve high stability, but the development flexibility of the movement manufacturers is very limited, it is difficult to improve the effect and speed of autofocus.
Core Algorithm - "Efficient Stream Control"
After years of development, video coding technology has made great strides in the compression efficiency and image quality of MPEG-1 (MP3, VCD), MPEG-2 (DVD, SVCD), and MPEG-4 video.
In particular, the H.264 technology developed from MPEG-4 Part10 has become the mainstream coding technology in the current surveillance market with its high image compression efficiency and good image quality. In recent years, H.264 technology has continued to evolve. From the original Baseline Profile, only I/P frames were provided. Only progressive scan and CAVLC (content-based adaptive variable-length encoding) are supported. The mainstream MainProfile has not only been provided. I/P/B frames, while also supporting progressive and interlaced scanning, and multiple encoding methods CAVLC (content-based adaptive variable-length encoding) or CABAC (content-based adaptive binary arithmetic encoding) compared to CABAC CAVLC can improve compression efficiency by at least 10%-15%.
At present, products based on H.264 Main Profile can provide compressed video of 3M bitstream at 720P resolution and compressed video of 6M bitstream at 1080P resolution under the premise of ensuring image quality.
The H.264 compression coding technology will be further developed. It will also be possible to implement HighProfile's compression coding capability on HD high-speed balls. HighProfile will provide higher compression efficiency and better image quality while also providing highly lossless video coding. To meet the needs of platform video intelligence analysis.
The future development trend of HD high-speed ball
In line with the development trend of the video surveillance industry, HD high-speed domes are also moving in the direction of high-definition, intelligence, and networking. They use the advantages of the dome's own mobility and flexibility to greatly increase the integration capabilities of surveillance systems and achieve efficient, high-quality video. monitor.
In other words, video surveillance will be based on behavior analysis technology to achieve intelligent functions such as personnel focus, traffic monitoring, cross-line inspection, and perimeter prevention. In combination with real-time uploading of high-speed high-speed ball alarms, it can bring more users to various industries. Intuitive and effective monitoring of screen effects, providing intelligent monitoring solutions.
The intelligent analysis function can provide users with timely and effective monitoring services, which is more convenient for positioning and tracking in outdoor complex environments. For example, when the perimeter of an airport is guarded against an overly decentralized environment, one or more people in the management office cannot fully monitor all the perimeters. In this case, the HD high-speed dome with video analysis function can fully display its talents. Automatic detection of suspicious objects entering or leaving a certain area at certain locations or for a specific period of time.
In the future, high-definition technology will be developed toward the smart front end, and front end of a series of intelligent functions such as face recognition and object tracking will be used to make HD products give full play to their intelligent functions. Under the conditions of high-definition picture quality, intelligent identification functions will change. Be more effective and provide stronger evidence for social security and crime detection.
Generally more typical intelligent analysis techniques include motion detection, face recognition, etc., based on high-definition image quality, combined with face recognition function, the application of face data combined with the database, for example, in some people flow more Sites such as exit and entry gates, railway stations, etc. If robbery incidents occur in these areas, managers can use the intelligent analysis function of HD Speed ​​Dome to track them more quickly and accurately.
Or in some commercial industries such as shopping malls and supermarkets, the use of intelligent high-definition network high-speed domes can form a data table of images taken by them, such as passenger flow, customer's gender, external features, and items purchased by customers. Through the analysis of tabular data, this can provide managers with comprehensive passenger flow data and item sales analysis, which is conducive to the effective allocation of resources.
High-speed high-speed ball core core components - "high-definition integrated movement"
After years of development of the integrated camera movement, the design of its core technology integrated lens and auto-focus algorithm has been quite mature.
The standard of high-definition integrated lens quality is roughly divided into: optical performance, stability and consistency of key components. The optical performance mainly refers to the resolution of the lens under various optical multiples. Of course, it also includes the seriousness of ghosting, purple fringing, and dispersion. The key components mainly include the aperture, motor, and filter switching components.
After entering the era of high-definition, these technical problems have been resolved quickly. Currently, different products represented by Japanese lenses, Taiwan lenses, and domestic lenses have been formed. Japanese lenses generally perform well in terms of optical performance and stability, but their prices are relatively high. Taiwan's lenses are relatively cost-effective, but their optical performance, especially high-resolution image performance, is insufficient; while domestic manufacturers' one-camera lenses do not perform well in terms of stability and consistency. ideal.
In terms of autofocus algorithms, several major solutions have also been formed. For example, HD autofocus solutions represented by TI's DM368, FPGA and ASIC. The FPGA solution belongs to the hardware circuit implementation mode, and the stability is high. The effect and speed of autofocus are fast. The solution of the DM368 is a software system combined with the implementation of the hardware register. Its autofocusing effect is relatively good, but the speed and stability The sexual aspect needs to be tested; the ASIC solution is a hardware circuit with a simple software approach to achieve high stability, but the development flexibility of the movement manufacturers is very limited, it is difficult to improve the effect and speed of autofocus.
Core Algorithm - "Efficient Stream Control"
After years of development, video coding technology has made great strides in the compression efficiency and image quality of MPEG-1 (MP3, VCD), MPEG-2 (DVD, SVCD), and MPEG-4 video.
In particular, the H.264 technology developed from MPEG-4 Part10 has become the mainstream coding technology in the current surveillance market with its high image compression efficiency and good image quality. In recent years, H.264 technology has continued to evolve. From the original Baseline Profile, only I/P frames were provided. Only progressive scan and CAVLC (content-based adaptive variable-length encoding) are supported. The mainstream MainProfile has not only been provided. I/P/B frames, while also supporting progressive and interlaced scanning, and multiple encoding methods CAVLC (content-based adaptive variable-length encoding) or CABAC (content-based adaptive binary arithmetic encoding) compared to CABAC CAVLC can improve compression efficiency by at least 10%-15%.
At present, products based on H.264 Main Profile can provide compressed video of 3M bitstream at 720P resolution and compressed video of 6M bitstream at 1080P resolution under the premise of ensuring image quality.
The H.264 compression coding technology will be further developed. It will also be possible to implement HighProfile's compression coding capability on HD high-speed balls. HighProfile will provide higher compression efficiency and better image quality while also providing highly lossless video coding. To meet the needs of platform video intelligence analysis.
The future development trend of HD high-speed ball
In line with the development trend of the video surveillance industry, HD high-speed domes are also moving in the direction of high-definition, intelligence, and networking. They use the advantages of the dome's own mobility and flexibility to greatly increase the integration capabilities of surveillance systems and achieve efficient, high-quality video. monitor.
In other words, video surveillance will be based on behavior analysis technology to achieve intelligent functions such as personnel focus, traffic monitoring, cross-line inspection, and perimeter prevention. In combination with real-time uploading of high-speed high-speed ball alarms, it can bring more users to various industries. Intuitive and effective monitoring of screen effects, providing intelligent monitoring solutions.
The intelligent analysis function can provide users with timely and effective monitoring services, which is more convenient for positioning and tracking in outdoor complex environments. For example, when the perimeter of an airport is guarded against an overly decentralized environment, one or more people in the management office cannot fully monitor all the perimeters. In this case, the HD high-speed dome with video analysis function can fully display its talents. Automatic detection of suspicious objects entering or leaving a certain area at certain locations or for a specific period of time.
In the future, high-definition technology will be developed toward the smart front end, and front end of a series of intelligent functions such as face recognition and object tracking will be used to make HD products give full play to their intelligent functions. Under the conditions of high-definition picture quality, intelligent identification functions will change. Be more effective and provide stronger evidence for social security and crime detection.
Generally more typical intelligent analysis techniques include motion detection, face recognition, etc., based on high-definition image quality, combined with face recognition function, the application of face data combined with the database, for example, in some people flow more Sites such as exit and entry gates, railway stations, etc. If robbery incidents occur in these areas, managers can use the intelligent analysis function of HD Speed ​​Dome to track them more quickly and accurately.
Or in some commercial industries such as shopping malls and supermarkets, the use of intelligent high-definition network high-speed domes can form a data table of images taken by them, such as passenger flow, customer's gender, external features, and items purchased by customers. Through the analysis of tabular data, this can provide managers with comprehensive passenger flow data and item sales analysis, which is conducive to the effective allocation of resources.
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