CN111726569A - Monitoring content replacement detection system and method - Google Patents
Monitoring content replacement detection system and method Download PDFInfo
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- CN111726569A CN111726569A CN201911254720.XA CN201911254720A CN111726569A CN 111726569 A CN111726569 A CN 111726569A CN 201911254720 A CN201911254720 A CN 201911254720A CN 111726569 A CN111726569 A CN 111726569A
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
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- 238000004458 analytical method Methods 0.000 claims abstract description 11
- 238000010191 image analysis Methods 0.000 claims description 13
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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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
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Abstract
The invention relates to a monitoring content replacement detection system, which comprises: the parameter matching device is used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, and taking a matching image parameter as a reliable parameter according to a matching result; and the instruction triggering device is used for sending a signal replacement instruction when the proportion of the reliable parameter quantity in each image parameter occupying the total quantity of each image parameter is less than or equal to a preset proportion threshold value, and otherwise, sending a signal non-replacement instruction. The invention also relates to a monitoring content replacement detection method. The monitoring content replacement detection system and method provided by the invention are intuitive in data and stable in operation. The matching analysis is carried out on each parameter of the current collected image and each historical parameter of the same type, so that effective judgment data can be provided for judging whether the monitoring picture of the video monitoring channel corresponding to the current collected image is maliciously replaced.
Description
Technical Field
The invention relates to the field of monitoring management, in particular to a monitoring content replacement detection system and a monitoring content replacement detection method.
Background
Video Surveillance is also known as Cameras and surveyability. The system comprises a front-end camera, a transmission cable and a video monitoring platform.
The cameras can be divided into network digital cameras and analog cameras and can be used for collecting front-end video image signals. The complete video monitoring system is composed of a majority of camera shooting, transmission, control, display and record registration 5. The video camera transmits video images to the control host through a network cable or a coaxial video cable, the control host distributes video signals to each monitor and video equipment, and simultaneously, voice signals needing to be transmitted can be synchronously recorded into the video camera. Through the control host, an operator can send out an instruction to control the up-down, left-right and left-right actions of the holder and perform focusing and zooming operations on the lens, and the switching among multiple paths of cameras can be realized through a video matrix. By using a special video recording processing mode, the operations of recording, replaying, calling, storing and the like can be carried out on the images.
Disclosure of Invention
In order to solve the technical problems in the related field, the invention provides a monitoring content replacement detection system and a monitoring content replacement detection method, which can be used for identifying a monitoring channel with possible picture replacement on the basis of directional image analysis in a targeted manner, and providing valuable reference data for subsequent dispatching of manual field inspection and safety level improvement.
According to an aspect of the present invention, there is provided a monitored content replacement detection system, the system including:
the picture grabbing equipment is used for grabbing each monitoring picture displayed on a display screen in the control room, and each monitoring picture displayed on the display screen is from different monitoring areas;
the display screen is used for displaying each monitoring picture in a split screen mode and carrying out red highlight display on the frame of the monitoring picture of the monitoring area corresponding to the received serial number to be checked;
the signal extraction equipment is connected with the picture capture equipment and used for receiving a monitoring picture from a certain monitoring area and extracting each image parameter of the monitoring picture;
the parameter matching equipment is connected with the signal extraction equipment and is used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, taking a matching image parameter as a reliable parameter and taking an image parameter as an unreliable parameter, wherein a matching image parameter is unmatched;
the instruction triggering device is respectively connected with the display screen and the parameter matching device and is used for sending a signal replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is less than or equal to a preset proportion threshold value;
the MMC memory chip is respectively connected with the instruction triggering device and the parameter matching device and is used for storing the preset proportion threshold value and various types of reference image parameters corresponding to each monitoring area;
the instruction triggering device is further used for outputting the number of the monitoring area corresponding to the monitoring picture as a number to be checked while sending the signal replacing instruction;
the instruction triggering device is further used for sending a signal non-replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is greater than the preset proportion threshold value;
the various types of reference image parameters are various types of image parameters obtained after the monitoring area corresponding to the monitoring picture is subjected to image acquisition in advance and image analysis in advance;
the various types of reference image parameters include image dynamic range, sharpness, resolution, and overall brightness.
According to another aspect of the present invention, there is also provided a monitored content replacement detection method, the method including:
using picture grabbing equipment for grabbing each monitoring picture displayed on a display screen in a control room, wherein each monitoring picture displayed on the display screen is from different monitoring areas;
using a display screen for displaying each monitoring picture in a split screen mode, and carrying out red highlight display on the frame of the monitoring picture of the monitoring area corresponding to the received number to be checked;
the signal extraction equipment is connected with the picture capture equipment and used for receiving a monitoring picture from a certain monitoring area and extracting each image parameter of the monitoring picture;
using a parameter matching device connected with the signal extraction device and used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, taking a matching image parameter as a reliable parameter and taking an image parameter as an unreliable parameter, wherein a matching image parameter is unmatched;
the use instruction triggering device is respectively connected with the display screen and the parameter matching device and is used for sending a signal replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is less than or equal to a preset proportion threshold value;
an MMC memory chip is used and is respectively connected with the instruction triggering device and the parameter matching device and used for storing the preset proportion threshold value and storing various types of reference image parameters corresponding to each monitoring area;
the instruction triggering device is further used for outputting the number of the monitoring area corresponding to the monitoring picture as a number to be checked while sending the signal replacing instruction;
the instruction triggering device is further used for sending a signal non-replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is greater than the preset proportion threshold value;
the various types of reference image parameters are various types of image parameters obtained after the monitoring area corresponding to the monitoring picture is subjected to image acquisition in advance and image analysis in advance;
the various types of reference image parameters include image dynamic range, sharpness, resolution, and overall brightness.
The monitoring content replacement detection system and method provided by the invention are intuitive in data and stable in operation. The matching analysis is carried out on each parameter of the current collected image and each historical parameter of the same type, so that effective judgment data can be provided for judging whether the monitoring picture of the video monitoring channel corresponding to the current collected image is maliciously replaced.
Therefore, the invention needs to have the following key points:
(1) analyzing various image parameters of a monitoring picture acquired on site, and comparing an analysis result with historical data to identify whether the monitoring picture is possibly replaced remotely, so that the authenticity of monitoring contents is ensured;
(2) and an on-site picture screen-grabbing mode and a multi-image parameter matching statistical mode are adopted, so that an effective solution is provided for replacement detection of the monitoring picture.
Detailed Description
Embodiments of the monitored content replacement detection system and method of the present invention will be described in detail below.
Image analysis generally utilizes mathematical models in conjunction with image processing techniques to analyze underlying features and overlying structures to extract information with some intelligence.
The mode recognition and artificial intelligence method is also called scene analysis or image understanding. Since the 60's of the 20 th century, there have been many studies on image analysis, and the development of image analysis techniques for specific problems and applications has gradually moved toward the establishment of general theories. The image analysis is closely related to the research content of image processing, computer graphics and the like, and is mutually crossed and overlapped. But image processing mainly studies image transmission, storage, enhancement and restoration; the method for representing the main points, lines, faces and volumes of computer graphics and the method for displaying visual information; the image analysis focuses on a description method for constructing images, and more particularly, symbols are used for representing various images, rather than calculating the images and carrying out reasoning by using various related knowledge. Image analysis is also germane to research on human vision, where research on certain recognizable modules in human vision mechanisms may contribute to improved computer vision capabilities.
In the prior art, for some monitoring scenes with high security requirements, it is particularly urgently required to know whether a monitoring picture of each monitoring channel is maliciously replaced, once the monitoring picture is maliciously replaced, the monitoring effect is greatly reduced, and the security performance of a monitoring system is more unsuspected, however, the development of the current network technology causes that the maliciousness replacement is more and more difficult to identify and discover in time.
In order to overcome the defects, the invention builds a system and a method for detecting the replacement of the monitoring content, and can effectively solve the corresponding technical problem.
The monitoring content replacement detection system shown according to the embodiment of the present invention includes:
the picture grabbing equipment is used for grabbing each monitoring picture displayed on a display screen in the control room, and each monitoring picture displayed on the display screen is from different monitoring areas;
the display screen is used for displaying each monitoring picture in a split screen mode and carrying out red highlight display on the frame of the monitoring picture of the monitoring area corresponding to the received serial number to be checked;
the signal extraction equipment is connected with the picture capture equipment and used for receiving a monitoring picture from a certain monitoring area and extracting each image parameter of the monitoring picture;
the parameter matching equipment is connected with the signal extraction equipment and is used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, taking a matching image parameter as a reliable parameter and taking an image parameter as an unreliable parameter, wherein a matching image parameter is unmatched;
the instruction triggering device is respectively connected with the display screen and the parameter matching device and is used for sending a signal replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is less than or equal to a preset proportion threshold value;
the MMC memory chip is respectively connected with the instruction triggering device and the parameter matching device and is used for storing the preset proportion threshold value and various types of reference image parameters corresponding to each monitoring area;
the instruction triggering device is further used for outputting the number of the monitoring area corresponding to the monitoring picture as a number to be checked while sending the signal replacing instruction;
the instruction triggering device is further used for sending a signal non-replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is greater than the preset proportion threshold value;
the various types of reference image parameters are various types of image parameters obtained after the monitoring area corresponding to the monitoring picture is subjected to image acquisition in advance and image analysis in advance;
the various types of reference image parameters include image dynamic range, sharpness, resolution, and overall brightness.
Next, a detailed description of the monitoring content replacement detecting system of the present invention will be further continued.
In the monitored content replacement detection system:
the display device is also respectively connected with the parameter matching device and the instruction triggering device and is used for displaying various working parameters of the parameter matching device and various working parameters of the instruction triggering device.
In the monitored content replacement detection system:
the display device is a liquid crystal display screen or an LED display screen.
The monitoring content replacement detection system may further include:
and the touch screen is used for receiving input information of the user according to the operation of the user.
In the monitored content replacement detection system:
the display device, the parameter matching device, the instruction triggering device and the touch screen are integrated on a flexible circuit board.
The monitoring content replacement detection method according to the embodiment of the invention comprises the following steps:
using picture grabbing equipment for grabbing each monitoring picture displayed on a display screen in a control room, wherein each monitoring picture displayed on the display screen is from different monitoring areas;
using a display screen for displaying each monitoring picture in a split screen mode, and carrying out red highlight display on the frame of the monitoring picture of the monitoring area corresponding to the received number to be checked;
the signal extraction equipment is connected with the picture capture equipment and used for receiving a monitoring picture from a certain monitoring area and extracting each image parameter of the monitoring picture;
using a parameter matching device connected with the signal extraction device and used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, taking a matching image parameter as a reliable parameter and taking an image parameter as an unreliable parameter, wherein a matching image parameter is unmatched;
the use instruction triggering device is respectively connected with the display screen and the parameter matching device and is used for sending a signal replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is less than or equal to a preset proportion threshold value;
an MMC memory chip is used and is respectively connected with the instruction triggering device and the parameter matching device and used for storing the preset proportion threshold value and storing various types of reference image parameters corresponding to each monitoring area;
the instruction triggering device is further used for outputting the number of the monitoring area corresponding to the monitoring picture as a number to be checked while sending the signal replacing instruction;
the instruction triggering device is further used for sending a signal non-replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is greater than the preset proportion threshold value;
the various types of reference image parameters are various types of image parameters obtained after the monitoring area corresponding to the monitoring picture is subjected to image acquisition in advance and image analysis in advance;
the various types of reference image parameters include image dynamic range, sharpness, resolution, and overall brightness.
Next, the specific steps of the monitoring content replacement detection method of the present invention will be further described.
The monitoring content replacement detection method comprises the following steps:
the display device is also respectively connected with the parameter matching device and the instruction triggering device and is used for displaying various working parameters of the parameter matching device and various working parameters of the instruction triggering device.
The monitoring content replacement detection method comprises the following steps:
the display device is a liquid crystal display screen or an LED display screen.
The monitoring content replacement detection method may further include:
the touch screen is used for receiving input information of a user according to the operation of the user.
In the monitored content replacement detection method:
the display device, the parameter matching device, the instruction triggering device and the touch screen are integrated on a flexible circuit board.
In addition, the parameter matching apparatus may be implemented using a PLA device.
Programmable Logic array PLA (programmable Logic array) which is composed of a programmable AND array and a programmable OR array. Programmable Array Logic (PAL) devices, which are introduced first by MMI corporation of America, are widely used due to the variety of output structures and flexible design.
The basic structure of a PAL device feeds a programmable and array output product term to an or array, and the logic expression implemented by the PAL device has the form of a sum of products, and thus can describe any boolean transfer function.
PAL devices are built internally of five basic types: (1) a basic array structure; (2) a programmable I/O structure; (3) a register output structure with feedback; (4) an exclusive or structure: (5) an arithmetic functional structure.
Finally, it should be noted that each functional device in the embodiments of the present invention may be integrated into one processing device, or each device may exist alone physically, or two or more devices may be integrated into one device.
The functions, if implemented in the form of software-enabled devices and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A monitored content replacement detection system, the system comprising:
the picture grabbing equipment is used for grabbing each monitoring picture displayed on a display screen in the control room, and each monitoring picture displayed on the display screen is from different monitoring areas;
the display screen is used for displaying each monitoring picture in a split screen mode and carrying out red highlight display on the frame of the monitoring picture of the monitoring area corresponding to the received serial number to be checked;
the signal extraction equipment is connected with the picture capture equipment and used for receiving a monitoring picture from a certain monitoring area and extracting each image parameter of the monitoring picture;
the parameter matching equipment is connected with the signal extraction equipment and is used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, taking a matching image parameter as a reliable parameter and taking an image parameter as an unreliable parameter, wherein a matching image parameter is unmatched;
the instruction triggering device is respectively connected with the display screen and the parameter matching device and is used for sending a signal replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is less than or equal to a preset proportion threshold value;
the MMC memory chip is respectively connected with the instruction triggering device and the parameter matching device and is used for storing the preset proportion threshold value and various types of reference image parameters corresponding to each monitoring area;
the instruction triggering device is further used for outputting the number of the monitoring area corresponding to the monitoring picture as a number to be checked while sending the signal replacing instruction;
the instruction triggering device is further used for sending a signal non-replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is greater than the preset proportion threshold value;
the various types of reference image parameters are various types of image parameters obtained after the monitoring area corresponding to the monitoring picture is subjected to image acquisition in advance and image analysis in advance;
the various types of reference image parameters include image dynamic range, sharpness, resolution, and overall brightness.
2. The monitored content replacement detection system as recited in claim 1, wherein:
the display device is also respectively connected with the parameter matching device and the instruction triggering device and is used for displaying various working parameters of the parameter matching device and various working parameters of the instruction triggering device.
3. The monitored content replacement detection system as recited in claim 2, wherein:
the display device is a liquid crystal display screen or an LED display screen.
4. The monitored content replacement detection system according to claim 3, wherein the system further comprises:
and the touch screen is used for receiving input information of the user according to the operation of the user.
5. The monitored content replacement detection system according to claim 4, wherein:
the display device, the parameter matching device, the instruction triggering device and the touch screen are integrated on a flexible circuit board.
6. A method for monitored content replacement detection, the method comprising:
using picture grabbing equipment for grabbing each monitoring picture displayed on a display screen in a control room, wherein each monitoring picture displayed on the display screen is from different monitoring areas;
using a display screen for displaying each monitoring picture in a split screen mode, and carrying out red highlight display on the frame of the monitoring picture of the monitoring area corresponding to the received number to be checked;
the signal extraction equipment is connected with the picture capture equipment and used for receiving a monitoring picture from a certain monitoring area and extracting each image parameter of the monitoring picture;
using a parameter matching device connected with the signal extraction device and used for acquiring each image parameter of the monitoring picture, performing matching analysis on each image parameter and a reference image parameter of a corresponding type, taking a matching image parameter as a reliable parameter and taking an image parameter as an unreliable parameter, wherein a matching image parameter is unmatched;
the use instruction triggering device is respectively connected with the display screen and the parameter matching device and is used for sending a signal replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is less than or equal to a preset proportion threshold value;
an MMC memory chip is used and is respectively connected with the instruction triggering device and the parameter matching device and used for storing the preset proportion threshold value and storing various types of reference image parameters corresponding to each monitoring area;
the instruction triggering device is further used for outputting the number of the monitoring area corresponding to the monitoring picture as a number to be checked while sending the signal replacing instruction;
the instruction triggering device is further used for sending a signal non-replacement instruction when the proportion of the number of the reliable parameters in each image parameter occupying the total number of each image parameter is greater than the preset proportion threshold value;
the various types of reference image parameters are various types of image parameters obtained after the monitoring area corresponding to the monitoring picture is subjected to image acquisition in advance and image analysis in advance;
the various types of reference image parameters include image dynamic range, sharpness, resolution, and overall brightness.
7. The monitored content replacement detection method as claimed in claim 6, wherein:
the display device is also respectively connected with the parameter matching device and the instruction triggering device and is used for displaying various working parameters of the parameter matching device and various working parameters of the instruction triggering device.
8. The monitored content replacement detection method as claimed in claim 7, wherein:
the display device is a liquid crystal display screen or an LED display screen.
9. The monitored content replacement detection method as recited in claim 8, wherein the system further comprises:
the touch screen is used for receiving input information of a user according to the operation of the user.
10. The monitored content replacement detection method as claimed in claim 9, wherein:
the display device, the parameter matching device, the instruction triggering device and the touch screen are integrated on a flexible circuit board.
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| CN201911254720.XA CN111726569A (en) | 2019-12-10 | 2019-12-10 | Monitoring content replacement detection system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112911274A (en) * | 2020-11-17 | 2021-06-04 | 泰州物族信息科技有限公司 | Self-adaptive monitoring video detection platform and method |
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Application publication date: 20200929 |
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