CN113905269A - Method and device for realizing video monitoring OSD subtitle and clock detection by using OCR technology - Google Patents
Method and device for realizing video monitoring OSD subtitle and clock detection by using OCR technology Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 43
- 238000001514 detection method Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims description 15
- 238000004458 analytical method Methods 0.000 claims description 9
- 230000006855 networking Effects 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 4
- 238000013500 data storage Methods 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 3
- 238000007726 management method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
- H04N21/4316—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations for displaying supplemental content in a region of the screen, e.g. an advertisement in a separate window
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
- H04N21/8547—Content authoring involving timestamps for synchronizing content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- Business, Economics & Management (AREA)
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The invention discloses a method and a device for realizing video monitoring OSD subtitle and clock detection by using an OCR technology. The method for realizing video monitoring OSD subtitle and clock detection by using OCR technology comprises the following steps: the method comprises the steps of obtaining a video monitoring information list, obtaining a real-time video stream, carrying out screenshot on the video stream, simultaneously obtaining time of a local server or an NTP server, splitting the screenshot again according to GA/T751-2008 standard, identifying the screenshot by an OCR engine, simultaneously comparing and judging the identified time and the server time, and carrying out detection and judgment on identified address information and equipment basic information. The invention applies OCR recognition to the detection of the video monitoring OSD subtitles, thereby being capable of efficiently solving the detection of the video monitoring OSD subtitles with lower cost. In addition, the method for judging the position of the OSD subtitles is realized by a picture splitting mode.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a method and a device for realizing video monitoring OSD subtitle and clock detection by using an OCR technology.
Background
With the development of video monitoring technology, the number of video monitoring is continuously increased, and the video monitoring OSD subtitle and hour hand management is insufficient. The traditional video monitoring operation and maintenance system cannot accurately control OSD subtitles and hour hands, only can directly connect the devices SDK for management, and is high in management cost.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a method and a device for realizing video monitoring OSD caption and clock detection by using an OCR technology.
The technical scheme of the invention is as follows:
the method for realizing video monitoring OSD subtitle and clock detection by using OCR technology comprises the following steps:
the GB platform docking module acquires a video monitoring information list from the video networking platform through a GB/T28181-2016 protocol;
acquiring real-time video stream of video monitoring through a video networking platform according to the acquired video monitoring information list;
the video stream screenshot module performs frame extraction on the acquired real-time video stream, intercepts a picture and outputs a picture screenshot;
splitting the acquired screenshot into three screenshots, namely an upper right region, a lower right region and a lower right region according to the specification of an OSD subtitle in the GA/T751-2008 standard, wherein each screenshot contains position information of the subtitle in a default manner;
the three screenshots are transmitted into an OCR recognition engine module for recognition, and recognition results are cached respectively;
respectively detecting and judging subtitle information according to the OCR recognition result, comparing and judging the recognition result of the lower right region with the administrative division and the installation address corresponding information of the equipment, and comparing and judging the information of the lower left region with the equipment installation direction and the equipment PTZ information corresponding information of the equipment;
and judging the time format according to the result of OCR recognition of the upper right corner time area.
The video monitoring information list comprises equipment numbers, equipment names, administrative regions to which the equipment belongs, equipment installation addresses, equipment installation directions and equipment installation PTZ information.
Preferably, when the obtained real-time video stream is subjected to frame extraction and a picture is captured, a picture screenshot is output; and acquiring current standard time information through the NTP service module.
The upper right area is a time information area, the lower right area is an administrative division and an address area, and the lower left area is an additional information area.
Preferably, when the time format is judged according to the result of OCR recognition of the upper right corner time area; and comparing with the NTP time to check whether the time is within the allowable error range.
Preferably, the recognition result analysis module collects and outputs the detection results to form the detection results, and the detection results are displayed in a unified manner by the result display module.
Utilize OCR technique to realize video monitoring OSD caption and clock detection's device, include:
GB platform butt joint module: the device is responsible for acquiring a device list and acquiring a real-time video stream through a GB/T28181-2016 protocol;
video stream screenshot module: the system is responsible for intercepting pictures from a video stream and splitting and capturing the pictures according to the OSD requirement of GA/T751-2008;
NTP service module: the network node is responsible for providing NTP service and acquiring NTP service standard time;
an OCR recognition engine module: the system is responsible for identifying text information in the picture and outputting the text information through a structured text;
the identification result analysis module: the OCR recognition device is responsible for carrying out matching analysis on OCR recognition results and related information of equipment and outputting detection results;
and a result display module: the server is responsible for uniformly displaying the identified result in a web page mode;
a data storage module: and storing the uniformly displayed data.
The invention has the beneficial effects that: the invention applies OCR recognition to the detection of the video monitoring OSD subtitles, thereby being capable of efficiently solving the detection of the video monitoring OSD subtitles with lower cost. In addition, the method for judging the position of the OSD subtitles is realized by a picture splitting mode.
Drawings
FIG. 1 is a flow chart of a method for implementing video monitoring OSD caption and clock detection by using OCR technology;
FIG. 2 is a schematic diagram of the OSD caption request in GA/T751-2008 standard;
FIG. 3 is a schematic view of monitoring frame segmentation;
fig. 4 is a frame diagram of a device for realizing video monitoring OSD caption and clock detection by using the OCR technology.
Detailed Description
For a better understanding of the invention, reference will now be made to the following examples and accompanying drawings.
Example 1:
as shown in fig. 1 to 4, the method for implementing video monitoring OSD subtitle and clock detection by using OCR technology includes the following steps:
s01, the GB platform docking module acquires a video monitoring information list from the video networking platform through a GB/T28181-2016 protocol;
s02, acquiring real-time video stream of video monitoring through a video networking platform according to the acquired video monitoring information list;
s03, the video stream screenshot module frames the acquired real-time video stream and intercepts the picture, and outputs a picture screenshot;
s04, splitting the acquired screenshot into three screenshots, namely an upper right region, a lower right region and a lower right region according to the specification of the OSD subtitle in the GA/T751-2008 standard, wherein each screenshot contains the position information of the subtitle in a default manner;
s05, transmitting the three screenshots into an OCR recognition engine module for recognition, and caching the recognition results respectively;
s06, respectively detecting and judging subtitle information according to the OCR recognition result, comparing and judging the recognition result of the lower right region with the administrative division and the installation address corresponding information of the equipment, and comparing and judging the information of the lower left region with the equipment installation direction and the equipment PTZ information corresponding information of the equipment;
and S07, judging the time format according to the result of the OCR recognition of the upper right corner time area.
Specifically, the video monitoring information list includes a device number, a device name, an administrative area to which the device belongs, a device installation address, a device installation direction, and device installation PTZ information.
Because the image of the video monitoring is greatly influenced by light, certain interference exists on the recognition effect of the OCR, the images can be respectively captured in three time periods of morning, noon and evening for the video monitoring, and the readiness of the OSD can be comprehensively judged according to the captured image of each time period.
Preferably, step S03 is performed simultaneously; step S03' is performed: and acquiring current standard time information through the NTP service module.
Specifically, as shown in fig. 2, the upper right area is a time information area, the lower right area is an administrative division and address area, and the lower left area is an additional information area.
Preferably, step S06 is executed while step S06': and comparing with the NTP time to check whether the time is within the allowable error range.
Preferably, the recognition result analysis module collects and outputs the detection results to form the detection results, and the detection results are displayed in a unified manner by the result display module.
Example 2:
as shown in fig. 4, the apparatus for implementing video monitoring OSD caption and clock detection by using OCR technology includes:
GB platform butt joint module: the device is responsible for acquiring a device list and acquiring a real-time video stream through a GB/T28181-2016 protocol;
video stream screenshot module: the system is responsible for intercepting pictures from a video stream and splitting and capturing the pictures according to the OSD requirement of GA/T751-2008;
NTP service module: the network node is responsible for providing NTP service and acquiring NTP service standard time;
an OCR recognition engine module: the system is responsible for identifying text information in the picture and outputting the text information through a structured text;
the identification result analysis module: the OCR recognition device is responsible for carrying out matching analysis on OCR recognition results and related information of equipment and outputting detection results;
and a result display module: the server is responsible for uniformly displaying the identified result in a web page mode;
a data storage module: and storing the uniformly displayed data.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, so any modifications, equivalents or improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. The method for realizing video monitoring OSD subtitle and clock detection by using OCR technology is characterized by comprising the following steps: the method comprises the following steps: the GB platform docking module acquires a video monitoring information list from the video networking platform through a GB/T28181-2016 protocol;
acquiring real-time video stream of video monitoring through a video networking platform according to the acquired video monitoring information list;
the video stream screenshot module performs frame extraction on the acquired real-time video stream, intercepts a picture and outputs a picture screenshot;
splitting the acquired screenshot into three screenshots, namely an upper right region, a lower right region and a lower right region according to the specification of an OSD subtitle in the GA/T751-2008 standard, wherein each screenshot contains position information of the subtitle in a default manner;
the three screenshots are transmitted into an OCR recognition engine module for recognition, and recognition results are cached respectively;
respectively detecting and judging subtitle information according to the OCR recognition result, comparing and judging the recognition result of the lower right region with the administrative division and the installation address corresponding information of the equipment, and comparing and judging the information of the lower left region with the equipment installation direction and the equipment PTZ information corresponding information of the equipment;
and judging the time format according to the result of OCR recognition of the upper right corner time area.
2. The method for implementing video monitoring OSD caption and clock detection by using OCR technology as claimed in claim 1, wherein: the video monitoring information list comprises equipment numbers, equipment names, administrative regions to which the equipment belongs, equipment installation addresses, equipment installation directions and equipment installation PTZ information.
3. The method for implementing video monitoring OSD caption and clock detection by using OCR technology as claimed in claim 1, wherein: when the obtained real-time video stream is subjected to frame extraction and a picture is captured, outputting a picture screenshot; and acquiring current standard time information through the NTP service module.
4. The method for implementing video monitoring OSD caption and clock detection by using OCR technology as claimed in claim 1, wherein: the upper right area is a time information area, the lower right area is an administrative division and an address area, and the lower left area is an additional information area.
5. A method for implementing video monitoring OSD caption and clock detection using OCR technology as recited in claim 3 wherein: judging the time format according to the OCR recognition result of the upper right corner time area; and comparing with the NTP time to check whether the time is within the allowable error range.
6. The method for implementing video monitoring OSD caption and clock detection by using OCR technology as claimed in claim 5, wherein the method comprises the following steps: and the recognition result analysis module collects and outputs the detection results to form detection results, and the detection results are displayed in a unified manner by the result display module.
7. Utilize OCR technique to realize video monitoring OSD caption and clock detection's device, its characterized in that: the method comprises the following steps:
GB platform butt joint module: the device is responsible for acquiring a device list and acquiring a real-time video stream through a GB/T28181-2016 protocol;
video stream screenshot module: the system is responsible for intercepting pictures from a video stream and splitting and capturing the pictures according to the OSD requirement of GA/T751-2008;
NTP service module: the network node is responsible for providing NTP service and acquiring NTP service standard time;
an OCR recognition engine module: the system is responsible for identifying text information in the picture and outputting the text information through a structured text;
the identification result analysis module: the OCR recognition device is responsible for carrying out matching analysis on OCR recognition results and related information of equipment and outputting detection results;
and a result display module: the server is responsible for uniformly displaying the identified result in a web page mode;
a data storage module: and storing the uniformly displayed data.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111126378A (en) * | 2019-11-18 | 2020-05-08 | 杭州亿圣信息技术有限公司 | Method for extracting video OSD and reconstructing coverage area |
| CN111612088A (en) * | 2020-05-28 | 2020-09-01 | 北京轨道交通路网管理有限公司 | Method and device for detecting image of superimposed character |
| CN111818277A (en) * | 2020-06-24 | 2020-10-23 | 重庆山淞信息技术有限公司 | Character superposition method and device for video image, computer equipment and storage medium |
| CN111898605A (en) * | 2020-08-28 | 2020-11-06 | 四川长虹网络科技有限责任公司 | Set top box information detection method and system based on image OCR recognition |
| CN112232354A (en) * | 2020-11-23 | 2021-01-15 | 中国第一汽车股份有限公司 | Character recognition method, device, equipment and storage medium |
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- 2021-10-08 CN CN202111170501.0A patent/CN113905269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111126378A (en) * | 2019-11-18 | 2020-05-08 | 杭州亿圣信息技术有限公司 | Method for extracting video OSD and reconstructing coverage area |
| CN111612088A (en) * | 2020-05-28 | 2020-09-01 | 北京轨道交通路网管理有限公司 | Method and device for detecting image of superimposed character |
| CN111818277A (en) * | 2020-06-24 | 2020-10-23 | 重庆山淞信息技术有限公司 | Character superposition method and device for video image, computer equipment and storage medium |
| CN111898605A (en) * | 2020-08-28 | 2020-11-06 | 四川长虹网络科技有限责任公司 | Set top box information detection method and system based on image OCR recognition |
| CN112232354A (en) * | 2020-11-23 | 2021-01-15 | 中国第一汽车股份有限公司 | Character recognition method, device, equipment and storage medium |
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