CN102833511A - Method and device for storing high-definition videos based on serial digital interface (SDI) - Google Patents
Method and device for storing high-definition videos based on serial digital interface (SDI) Download PDFInfo
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- CN102833511A CN102833511A CN2012103467454A CN201210346745A CN102833511A CN 102833511 A CN102833511 A CN 102833511A CN 2012103467454 A CN2012103467454 A CN 2012103467454A CN 201210346745 A CN201210346745 A CN 201210346745A CN 102833511 A CN102833511 A CN 102833511A
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Abstract
The invention relates to the field of digital video processing technologies and safety protection monitoring, in particular to a method and device for storing high-definition videos based on a serial digital interface (SDI). The method comprises a step of storing processed video information into a storage unit, wherein the video information stored in the storage unit comprises 1) an H.264 video image or a moving picture experts group (MPEG) video image, 2) a static high-definition image and 3) an SDI video segment. The method has the beneficial effects that 1) the high-definition image or a static high-definition picture at a key moment can be stored, and an SDI high-definition video image storage demand can be met; 2) high-definition (HD)-SDI real-time images in several minutes before and after alarming are stored, so that powerful evidences are supplied to analysis for accident reasons; and 3) the videos are clear and complete, so that the optimal high-definition image source required by intelligent monitoring is effectively supplied.
Description
Technical field
The present invention relates to Digital Video Processing technology, protection and monitor field, particularly relate to a kind of storage means and device thereof based on the SDI HD video.
Background technology
SDI is Serial Digital Interface, promptly digital non-compress technique.Video has two kinds to handle the path: the non-compression of video compression or video through after the analog-to-digital conversion.The IP prison carries out processed compressed to video exactly, and its benefit is a large amount of compression bandwidth of generation and is controlled between the 1-8M that video is transmitted becomes possibility on IP network; But the limited storage space system of video data; In order to squeeze out more memory space; Video data is compressed, but the image/video that preserve compression back exists problems, and is fuzzy like video, image quality is unclear; Loss in detail can not be preserved the problem such as high-definition image or static high definition photo at crucial moment.If video is that to carry out digital non-processed compressed be SDI, do not recompress after the video analog-to-digital conversion, just carry out code storage by particular form.
That the SDI high-definition camera has is undistorted, do not have and postpone, do not compress advantages such as encoding and decoding are lossless, real-time high definition output.It is after compression, to transmit with the package mode unlike other digital supervision; But with the digital signal of uncompressed in transmission over coaxial cable; Can not produce distortion; The high-definition image that did not compress has ensured the integrality of image to greatest extent, provides intelligent monitoring required best high-definition image source.
It is SD SDI that SDI is divided into 3 standard: lSD-SDIl according to video resolution and frame per second at present, is primarily aimed at SD resolution, per second 25 frames or 30 frames (resolution is Phase Alternation Line system and TSC-system).Video bandwidth after the analog-to-digital conversion is roughly about 250Mbps, and HD-SDI is high definition SDI, and it is 1080P that this standard is primarily aimed at resolution; Frame per second is 25 or 30; The data after A amount is 1.485Gbps:3G-SDI, high aloof from politics and material pursuits frame per second SDI, and resolution still is 1080P; But frame per second increases to 50 or 60, and the data after A amount is 2.97Gbps.This shows that the original data volume without compression after the video analog-to-digital conversion is very big, if without compression, so big data volume is directly stored, and memory capacity will be very surprising.
Summary of the invention
The present invention overcomes above-mentioned weak point; Purpose is to provide a kind of storage means based on the SDI HD video; Guaranteeing on the basis that image is undistorted, transmission does not postpone that storage SDI HD video data in finite storage space are originated for monitoring provides the image of high definition.
Another object of the present invention is to provide the device of said method, can be implemented in the original HD video data of storage in the finite storage space, undistorted image source is provided.
The present invention achieves the above object through following technical scheme: a kind of storage means based on the SDI HD video may further comprise the steps:
1) memory cell being looked its size is divided into high definition and does not have time delay video memory block and high definition static images memory block;
2) high definition not being had the time delay video memory partitioning is that the normal storage district triggers the memory block with reporting to the police;
3) under the normal condition, through video coding circuit front-end camera is received H.264 video image or the MPEG video image that the SDI high-definition image converts standard to, the high definition that is saved in memory cell does not have the normal storage district of time delay video memory block;
4) after the high definition of the memory cell normal storage district data of not having a time delay video memory block are filled with; As do not report to the police and trigger; Then next section video covers from the normal storage district and starts anew to cover, the circulation typing, and the normal storage district is the video of in store nearest a period of time all the time;
When 5) operating, capture circuit through image and from continuous SDI vision signal, capture static high definition picture-storage at a certain time interval in high definition static images memory block like step 3)-step 4);
6) when report to the police triggering, immediately with the video image in normal storage district in nearest a period of time, the video image of adding a period of time after the warning deposits in together to report to the police and triggers the memory block.
As preferably, the described static high-definition image resolution of step 5) is 1920 x 1080 or 1280 x, 720 pixels, and preserves with the JPG form.
As preferably, described static high-definition image is captured and be no more than 30 frames each second.
As preferably, the described warning of step 6) triggers and divides two kinds, and a kind of is that external trigger inserts with serial ports, network interface form, and second kind is the video identification mode.
A kind of storage device based on the SDI HD video as being used to realize said method comprises: video input module, video conversion module, image are captured circuit, memory cell, external alert trigger module, alarm module; Described video input module is captured circuit with video conversion module, image and is connected, and memory cell is captured circuit with video conversion module, image, alarm module is connected, and alarm module is connected with the external alert trigger module; Described video input module transfers to video conversion module, image candid photograph circuit, alarm module with video information and exports high definition respectively and do not have time delay video, static high-definition image, SDI HD video fragment, is saved in the memory cell.
As preferably, described memory cell comprises: high definition does not have time delay video memory block and high definition static images memory block; Described high definition does not have the time delay video memory block and comprises that the normal storage district triggers the memory block with reporting to the police.
As preferably, described video conversion module is a video coding circuit, the SDI high-definition image is converted to the H.264 video image or the MPEG video image of standard.
As preferably, described image is captured the circuit per second and is captured and be no more than 30 frames, and the resolution of static high-definition image is 1920 x 1080 or 1280 x, 720 pixels.
Beneficial effect of the present invention is: 1) can preserve the high-definition image or the static high definition photo at crucial moment, satisfy the storage demand of SDI high clear video image; 2) preserved report to the police before and after the HD-SDI high-definition real-time images of a few minutes, to the analysis on accident cause in later stage strong evidence is provided; 3) video complete display provides intelligent monitoring required best high-definition image source effectively.
Description of drawings
Fig. 1 is the schematic flow sheet of the inventive method;
Fig. 2 is the structural representation of apparatus of the present invention.
Embodiment
Below in conjunction with specific embodiment the present invention is described further, but protection scope of the present invention is not limited in this:
Embodiment 1: as shown in Figure 2, be used to realize a kind of device of the storage means based on the SDI HD video, and comprising: video input module, video coding circuit, image are captured circuit, memory cell, external alert trigger module, alarm module; Described video input module is captured circuit with video coding circuit, image and is connected, and memory cell is captured circuit with video coding circuit, image, alarm module is connected, and alarm module is connected with the external alert trigger module.
As shown in Figure 1, a kind of storage means based on the SDI HD video is that video information is saved in the memory cell after treatment, and the video information of storing in the memory cell comprises: 1) H.264 video image or MPEG video image; 2) high-definition image of static state; 3) SDI video segment.
Concrete steps are following:
1) memory cell being looked its size is divided into high definition and does not have time delay video memory block and high definition static images memory block;
2) high definition not being had the time delay video memory partitioning is that the normal storage district triggers the memory block with reporting to the police;
3) under the normal condition, through video coding circuit front-end camera is received the H.264 video image that the SDI high-definition image converts standard to, the high definition that is saved in memory cell does not have the normal storage district of time delay video memory block;
4) after the high definition of the memory cell normal storage district data of not having a time delay video memory block are filled with, trigger as not reporting to the police, then next section video covers from the normal storage district and starts anew to cover circulation typing, the video of the in store all the time 5 minutes clock times in normal storage district;
When 5) operating like step 3)-step 4); Through image capture circuit from continuous SDI vision signal with each seconds 20 frame capture static high-definition image, the resolution of static high-definition image be 1920 x, 1080 pixels and with the JPG format in high definition static images memory block;
6) give the alarm module triggering signal when the external alert trigger module,, add that the back 5 minutes video data of reporting to the police deposits in to report to the police together to trigger the memory block 5 minutes video datas of normal storage district stored;
7) video information of video input module output be preset in the information of video identification in reporting to the police when more inconsistent; Trigger alarm module; With 5 minutes video datas of normal storage district stored, add that the back 5 minutes video data of reporting to the police deposits the triggering memory block of reporting to the police together in.
Embodiment 2: present embodiment and the difference of implementing 1 are that video coding circuit converts the SDI high-definition image MPEG video image of standard to, and the resolution that image is captured the static high-definition image that circuit captures is 1280 x, 720 pixels.
Above said be specific embodiment of the present invention and the know-why used, if the change of doing according to conception of the present invention, when the function that it produced does not exceed spiritual that specification and accompanying drawing contain yet, must belong to protection scope of the present invention.
Claims (8)
1. storage means based on the SDI HD video is characterized in that may further comprise the steps:
1) memory cell being looked its size is divided into high definition and does not have time delay video memory block and high definition static images memory block;
2) high definition not being had the time delay video memory partitioning is that the normal storage district triggers the memory block with reporting to the police;
3) under the normal condition, through video coding circuit front-end camera is received H.264 video image or the MPEG video image that the SDI high-definition image converts standard to, the high definition that is saved in memory cell does not have the normal storage district of time delay video memory block;
4) after the high definition of the memory cell normal storage district data of not having a time delay video memory block are filled with; As do not report to the police and trigger; Then next section video covers from the normal storage district and starts anew to cover, the circulation typing, and the normal storage district is the video of in store nearest a period of time all the time;
When 5) operating, capture circuit through image and from continuous SDI vision signal, capture static high definition picture-storage at a certain time interval in high definition static images memory block like step 3)-step 4);
6) when report to the police triggering, immediately with the video image in normal storage district in nearest a period of time, the video image of adding a period of time after the warning deposits in together to report to the police and triggers the memory block.
2. a kind of storage means based on the SDI HD video according to claim 1 is characterized in that the described static high-definition image resolution of step 5) is 1920 x 1080 or 1280 x, 720 pixels, and preserves with the JPG form.
3. a kind of storage means based on the SDI HD video according to claim 3 is characterized in that candid photograph each second of described static high-definition image is no more than 30 frames.
4. according to the described a kind of storage means based on the SDI HD video of the arbitrary claim of claim 1-3, the described warning of step 6) triggers and divides two kinds, and a kind of is that external trigger inserts with serial ports, network interface form, and second kind is the video identification mode.
5. an a kind of storage device based on the SDI HD video that is used to realize the said method of claim 1 is characterized in that comprising: video input module, video conversion module, image candid photograph circuit, memory cell, external alert trigger module, alarm module; Described video input module is captured circuit with video conversion module, image and is connected, and memory cell is captured circuit with video conversion module, image, alarm module is connected, and alarm module is connected with the external alert trigger module; Described video input module transfers to video conversion module, image candid photograph circuit, alarm module with video information and exports high definition respectively and do not have time delay video, static high-definition image, SDI HD video fragment, is saved in the memory cell.
6. a kind of storage device based on the SDI HD video according to claim 5 is characterized in that described memory cell comprises: high definition does not have time delay video memory block and high definition static images memory block; Described high definition does not have the time delay video memory block and comprises that the normal storage district triggers the memory block with reporting to the police.
7. according to claim 5 or 6 described a kind of storage devices, it is characterized in that described video conversion module is a video coding circuit, the SDI high-definition image is converted to the H.264 video image or the MPEG video image of standard based on the SDI HD video.
8. a kind of storage device based on the SDI HD video according to claim 5 is characterized in that the candid photograph of described image candid photograph circuit per second is no more than 30 frames, and the resolution of static high-definition image is 1920 x 1080 or 1280 x, 720 pixels.
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| CN103974039A (en) * | 2014-04-29 | 2014-08-06 | 中科融通物联科技无锡有限公司 | Intelligent infrared thermal imaging and high-definition visible light dual-waveband video monitoring system |
| CN107690051A (en) * | 2016-08-03 | 2018-02-13 | 杭州萤石网络有限公司 | One kind alarm video recording method and device |
| CN109523553A (en) * | 2018-11-13 | 2019-03-26 | 华际科工（北京）卫星通信科技有限公司 | A kind of container unusual fluctuation monitoring method based on LSD straight-line detection partitioning algorithm |
| CN112948627A (en) * | 2019-12-11 | 2021-06-11 | 杭州海康威视数字技术股份有限公司 | Alarm video generation method, display method and device |
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| CN103974039A (en) * | 2014-04-29 | 2014-08-06 | 中科融通物联科技无锡有限公司 | Intelligent infrared thermal imaging and high-definition visible light dual-waveband video monitoring system |
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| CN112948627A (en) * | 2019-12-11 | 2021-06-11 | 杭州海康威视数字技术股份有限公司 | Alarm video generation method, display method and device |
| CN112948627B (en) * | 2019-12-11 | 2023-02-03 | 杭州海康威视数字技术股份有限公司 | Alarm video generation method, display method and device |
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Application publication date: 20121219 |