CN112037127A - Privacy shielding method and device for video monitoring, storage medium and electronic device - Google Patents
Privacy shielding method and device for video monitoring, storage medium and electronic device Download PDFInfo
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 230000000903 blocking effect Effects 0.000 claims abstract description 19
- 238000004590 computer program Methods 0.000 claims description 19
- 238000012545 processing Methods 0.000 claims description 18
- 230000003321 amplification Effects 0.000 claims description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 8
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- G06T3/00—Geometric image transformation in the plane of the image
- G06T3/40—Scaling the whole image or part thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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- G06T7/60—Analysis of geometric attributes
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- G—PHYSICS
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- 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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- 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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Abstract
The invention provides a privacy blocking method and device for video monitoring, a storage medium and an electronic device, wherein the method comprises the steps of obtaining a first picture included in a multimedia file; and when the target area in the first picture meets a preset condition, blocking the target area in the first picture. By the method and the device, the problem of poor monitoring effect on the picture containing the privacy shielding area is solved, and the effects of balancing privacy protection and monitoring comfort are further achieved.
Description
Technical Field
The invention relates to the field of cameras, in particular to a privacy blocking method and device for video monitoring, a storage medium and an electronic device.
Background
When monitoring is performed by using a camera, privacy leakage needs to be avoided for some public scenes such as schools, squares, cells and the like. The privacy-blocking function of the camera is increasingly used.
Generally, if the camera needs privacy shielding for a specific target under the condition of large magnification, but the specific target itself has too small pixels and no privacy leakage under the condition of small magnification, so that the user does not want a privacy shielding area for better picture experience.
Aiming at the problem that the monitoring effect of the image containing the privacy shielding area is not good in the related technology, no effective solution exists at present.
Disclosure of Invention
The embodiment of the invention provides a privacy blocking method and device for video monitoring, a storage medium and an electronic device, and aims to at least solve the problem that the monitoring effect of a picture containing a privacy blocking area in the related art is poor.
According to an embodiment of the invention, there is provided a privacy mask for video surveillance, comprising: acquiring a first picture included in a multimedia file; and when the target area in the first picture meets a preset condition, blocking the target area in the first picture.
According to another embodiment of the present invention, there is provided a privacy-blocking apparatus for video surveillance, including: the acquisition module is used for acquiring a first picture included in the multimedia file; the shielding module is used for shielding a target area in the first picture under the condition that the target area in the first picture meets a preset condition.
According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
According to the invention, after the first picture in the multimedia file is acquired, the target area is determined to be included in the first picture, and the target area is shielded in the first picture under the condition that the target area in the first picture meets the preset condition. The target area may be occluded in the first picture by determining whether the target area satisfies a preset condition. Therefore, the problem of poor image monitoring effect of the privacy shielding area can be solved, and the effect of optimizing the video monitoring of the privacy shielding area is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a block diagram of a hardware structure of a camera terminal of a privacy-blocking method for video surveillance according to an embodiment of the present invention;
FIG. 2 is a flow diagram of a privacy-obscuring method of video surveillance according to an embodiment of the present invention;
FIG. 3 is a flow diagram of a privacy-obscuring method of video surveillance according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a video surveillance privacy-obscuring apparatus, according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a video surveillance privacy-obscuring apparatus, according to an embodiment of the present invention;
fig. 6 is a flowchart illustrating a privacy-blocking method for video surveillance according to an alternative embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
The method provided by the first embodiment of the present application may be executed in a camera terminal, a computer terminal, or a similar camera device. Taking the example of the operation on the camera terminal, fig. 1 is a block diagram of a hardware structure of the camera terminal of the privacy-blocking method for video monitoring according to the embodiment of the present invention. As shown in fig. 1, the camera terminal may include one or more processors 102 (only one is shown in fig. 1) (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, and optionally may further include a transmission device 106 for communication functions and an input-output device 108. It will be understood by those skilled in the art that the structure shown in fig. 1 is only an illustration, and is not intended to limit the structure of the camera terminal. For example, the camera terminal may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.
The memory 104 may be used to store a computer program, for example, a software program and a module of an application software, such as a computer program corresponding to the privacy-blocking method for video surveillance in the embodiment of the present invention, and the processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, so as to implement the method described above. The memory 104 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor 102, which may be connected to the camera terminal over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmission device 106 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the camera terminal. In one example, the transmission device 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.
In this embodiment, a privacy-blocking method for video surveillance operating in the above-mentioned camera terminal is provided, and fig. 2 is a flowchart of the privacy-blocking method for video surveillance according to an embodiment of the present invention, as shown in fig. 2, the flowchart includes the following steps:
step S202, a first picture included in the multimedia file is obtained;
step S204, when it is determined that the first picture includes a target area and the target area in the first picture meets a preset condition, blocking the target area in the first picture.
When a user configures a target area shielding function in video monitoring, an automatic shielding magnification option is selected, and shielding parameters of the target area are stored in a pan-tilt module of the camera terminal. The cloud deck module calculates the coordinate position of the area shielded by the target area from time to time, can automatically judge whether the picture included in the current multimedia file should display the target area shielded by the privacy or not at the control center of the background, and if the picture should be displayed, receives the related instruction of the control center to carry out image acquisition and image coding processing.
In specific implementation, if a target area is included in the first screen and the target area in the first screen meets a preset privacy-blocking processing condition, blocking the target area in the first screen.
It should be noted that the preset privacy-mask processing conditions include: whether the area shielded by the target area is smaller than the ratio in the first picture or not; or whether the clarity in the target area is sufficient to see the target object in the target area.
Through the steps, after a first picture in a multimedia file is obtained, a target area is determined to be included in the first picture, and the target area is shielded in the first picture under the condition that the target area in the first picture meets a preset condition. The target area may be occluded in the first picture by determining whether the target area satisfies a preset condition. Therefore, the problem of poor image monitoring effect of the privacy shielding area can be solved, and the effect of optimizing the video monitoring of the privacy shielding area is achieved.
Optionally, in an embodiment of the present application, the method further includes: when the first picture comprises the target area and the target area meets a preset condition, shielding the target area in the first picture according to a preset first amplification parameter; and processing the first picture according to a preset second amplification parameter in the first picture under the condition that the first picture comprises the target area and the target area does not meet a preset condition.
Specifically, if the target area is included in the first picture and the target area meets a preset condition, the target area is shielded in the first picture according to a preset first magnification parameter. In addition, if the target area is included in the first picture and the target area does not meet the preset condition, the first picture is magnified according to a preset second magnification parameter in the first picture without shielding the target area. The first magnification parameter may be a magnification parameter of a large magnification, and the second magnification parameter may be a magnification parameter of a small magnification. The high magnification refers to a parameter that is adjusted in the image pickup apparatus when the maximum magnification of the image pickup apparatus is used as a magnification threshold. The small magnification refers to a parameter that is adjusted in the image pickup apparatus when the minimum magnification of the image pickup apparatus is used as a magnification threshold. Privacy occlusion of a specific object is required in the case of a large magnification, but is not required in the case of a small magnification since the pixels are too small.
Optionally, in an embodiment of the present application, the method further includes: performing a preset image encoding operation on images of other regions included in the first picture except the target region; and adjusting the image quality parameters of other areas except the target area while shielding the target area in the first picture according to the result of preset image coding operation.
Specifically, by performing a preset image encoding operation on the images in the other regions except the target region, the encoding quality outside the target region can be improved, and the encoding quality of the target region is reduced, so that the image effect of the visual scene can be improved under the condition that the whole code stream is not changed.
It should be noted that the image quality parameters include image coding quality, image sharpness, and the like, and those skilled in the art can select the parameters according to the actual usage scenario.
Optionally, in an embodiment of the present application, if the target area in the first screen satisfies a preset condition, blocking the target area in the first screen includes: shielding the target area in the first picture under the condition that the ratio of the area of the target area in the first picture to the total area of the first picture is greater than a preset occupation ratio; or, shielding the target area in the first picture under the condition that the image definition of the target area in the first picture meets a preset condition.
Specifically, when the ratio of the area of the target region in the first picture to the total area of the first picture is greater than a preset ratio, for example, greater than 0.2% of the preset ratio. Privacy occlusion of the target domain is required. And under the condition that the ratio of the area of the target area in the first picture to the total area of the first picture is smaller than a preset ratio, the current picture is considered to be only capable of seeing the outline of the target area, and privacy shielding is not needed.
Or, the definition of the sensitive area may be determined, and when the image definition of the target area in the first picture meets a preset condition, the target area is clearly visible and needs to be protected in privacy, otherwise, the target area is not started.
It should be noted that the preset condition that the image sharpness is satisfied is determined according to an actual situation, for example, if the ratio of the target area in the first screen is large and the image sharpness of the target area is high when the current image capturing apparatus adjusts to the high magnification parameter, the preset condition is considered to be satisfied.
Optionally, before the obtaining of the first picture included in the multimedia file in the embodiment of the present application, the method further includes: determining a target area, wherein the target area comprises a sensitive area in a video monitoring picture; configuring a configured occlusion parameter of the target area according to the sensitive area, wherein the occlusion parameter at least comprises one of the following parameters: shielding multiplying power and shielding type; and updating the occlusion parameter under the condition that the first picture is changed. The sensitive region is the region of interest in the image.
Specifically, a target area in the monitoring screen is selected, and when parameter configuration of the camera terminal is performed, privacy occlusion needs to be drawn for the target area, and relevant parameters need to be set. For example, the mask magnification is selected automatically, and the privacy-blocking type is selected to be mosaic. In addition, when the holder of the camera terminal rotates, the coordinates of the blocking block of the target area can be refreshed in real time, and whether the blocking block of the target area is in the visual field or not is judged.
Optionally, in an embodiment of the present application, when the first picture changes, the updating the occlusion parameter includes: storing the current configuration shielding parameters of the target area; and under the condition that the video monitoring picture is changed, updating the configuration shielding parameters of the target area according to the coordinate position of the target area.
Specifically, for the PTZ camera terminal, the privacy blocking parameter needs to be stored in a pan-tilt module of the PTZ camera terminal, and the coordinate position of the blocking block in the target area is calculated by the pan-tilt module at any time.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
In this embodiment, a privacy-blocking apparatus for video monitoring is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, which have already been described and are not described again. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
FIG. 3 is a block diagram of a privacy-masking apparatus for video surveillance according to an embodiment of the present invention, and the apparatus includes, as shown in FIG. 3
An obtaining module 30, configured to obtain a first picture included in a multimedia file;
the occlusion module 32 is configured to, when it is determined that the first picture includes a target region and the target region in the first picture satisfies a preset condition, occlude the first picture in the first picture.
When a user configures a target area shielding function in video monitoring, an automatic shielding magnification option is selected, and shielding parameters of the target area are stored in a pan-tilt module of the camera terminal. The cloud deck module calculates the coordinate position of the area shielded by the target area from time to time, can automatically judge whether the picture included in the current multimedia file should display the target area shielded by the privacy or not at the control center of the background, and if the picture should be displayed, receives the related instruction of the control center to carry out image acquisition and image coding processing.
In specific implementation, if it is determined that a target area is included in the first screen and the target area in the first screen meets a preset privacy-blocking processing condition, blocking the target area in the first screen.
Through the module, after a first picture in a multimedia file is obtained, a target area is included in the first picture, and the target area is shielded in the first picture under the condition that the target area in the first picture meets a preset condition. The target area may be occluded in the first picture by determining whether the target area satisfies a preset condition. Therefore, the problem of poor image monitoring effect of the privacy shielding area can be solved, and the effect of optimizing the video monitoring of the privacy shielding area is achieved.
Fig. 4 is a block diagram of a privacy-blocking apparatus for video surveillance according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes, in addition to all modules shown in fig. 4:
a first processing module 34, configured to, in a first picture of the video monitoring, include the target area, and when the target area meets a preset condition, block the target area in the first picture according to a preset first magnification parameter;
a second processing module 36, configured to, when a first picture of the video monitoring includes the target area and the target area does not meet a preset condition, process the target area in the first picture according to a preset second amplification parameter.
Specifically, if the target area is included in the first picture and the target area meets a preset condition, the target area is shielded in the first picture according to a preset first magnification parameter. In addition, if the target area is included in the first picture and the target area does not meet the preset condition, the first picture is magnified according to a preset second magnification parameter in the first picture without shielding the target area. The first magnification parameter may be a magnification parameter of a large magnification, and the second magnification parameter may be a magnification parameter of a small magnification.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
In order to better understand the privacy-blocking method flow of the video monitoring, the following explains the technical solutions with reference to preferred embodiments, but the technical solutions of the embodiments of the present invention are not limited thereto.
The preferred embodiment of the invention can perform reverse ROI encoding operation on the encoding of the target region needing to be shielded based on the automatic judgment of the shielding multiplying power and less complexity of client configuration, thereby improving the encoding quality of the non-privacy shielding region.
As shown in fig. 6, the flowchart of the privacy-blocking method for video monitoring in the embodiment of the present application is schematically shown, and specifically includes the following steps:
step S600 starts.
In step S602, a target is selected.
And selecting a target area in the monitoring picture of the multimedia file.
Step S604, configuring parameters.
And drawing privacy occlusion on the target area, and setting related parameters, such as automatic shielding magnification selection and mosaic privacy occlusion type selection.
Step S606, the coordinates are updated.
The cloud platform module of camera keeps the privacy and shelters from the parameter to PTZ camera is the example, when the cloud platform rotated, refreshes the privacy in real time and hides the coordinate of dog and judges whether this privacy hides the dog in the field of vision.
Step S608, the control center determines whether the target area needs to be shielded? If so, the process proceeds to step S610, otherwise, the process proceeds to step S614.
And if the current shielding multiplying power is automatic, judging whether the target area needs to be shielded or not. If the area covered by the current target area is smaller than 0.2% of the current picture, if so, the current picture is considered to only see the outline of the target area, privacy shielding is not needed, if so, the target area is considered to be required to be subjected to privacy shielding, and a judgment conclusion is transmitted to the coding module and the acquisition module. Or, the definition of the sensitive area can be judged, privacy protection is started when the target area is clearly visible, and otherwise, the privacy protection is not started.
And step S610, collecting codes.
And when the target area is shielded, the reverse ROI encoding operation is carried out, the encoding quality outside the target area is improved, and the encoding quality of the sensitive area is reduced, so that the image effect of the visual scene can be improved under the condition that the whole code stream is not changed. The ROI refers to a region of interest, i.e., a target region.
Step S612, shielding the target.
When the target is shielded, the target area is overlapped and shielded, and privacy protection is achieved.
And step S614, ending.
According to the method, the monitoring effect of the video with privacy occlusion is optimized by automatically judging the occlusion magnification and the ROI coding technology. In specific implementation, for example, for monitoring equipment on a certain square, residential buildings on a certain road can be monitored in a zooming manner, mosaic processing can be performed on the residential buildings, meanwhile, the monitoring equipment can automatically perform ROI processing on regions except the mosaic, and the coding quality is improved. When the camera monitors the square at the minimum time, the proportion of the residential building in the picture is small, mosaic processing is not performed on the residential building, and the experience of the whole monitoring scene is improved.
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, acquiring a first picture included in the multimedia file;
s2, when the first frame includes a target area and the target area in the first frame satisfies a preset condition, blocking the target area in the first frame.
Optionally, the storage medium is further arranged to store a computer program for performing the steps of:
s1, when the first picture includes the target area and the target area meets a preset condition, shielding the target area in the first picture according to a preset first amplification parameter;
and S2, processing the first picture according to a preset second magnification parameter in the first picture under the condition that the target area is included in the first picture and the target area does not meet a preset condition.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
s1, acquiring a first picture included in the multimedia file;
s2, when the first frame includes a target area and the target area in the first frame satisfies a preset condition, blocking the target area in the first frame.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A privacy blocking method for video monitoring is characterized by comprising the following steps:
acquiring a first picture included in a multimedia file;
and when the target area in the first picture meets a preset condition, blocking the target area in the first picture.
2. The method of claim 1, further comprising:
the target area is included in the first picture, and,
shielding the target area in the first picture according to a preset first amplification parameter under the condition that the target area meets a preset condition;
and processing the first picture according to a preset second amplification parameter in the first picture under the condition that the target area does not meet the preset condition.
3. The method of claim 1,
the method further comprises the following steps: performing a preset image encoding operation on images of other regions included in the first picture except the target region;
and adjusting the image quality parameters of other areas except the target area while shielding the target area in the first picture according to the result of preset image coding operation.
4. The method according to claim 1, wherein the blocking the target area in the first picture if the target area in the first picture satisfies a preset condition comprises:
shielding the target area in the first picture under the condition that the ratio of the area of the target area in the first picture to the total area of the first picture is greater than a preset occupation ratio;
or, shielding the target area in the first picture under the condition that the image definition of the target area in the first picture meets a preset condition.
5. The method according to claim 1, wherein before the obtaining the first picture included in the multimedia file, further comprising:
determining a target area, wherein the target area comprises a sensitive area in a video monitoring picture;
configuring the occlusion parameters of the target area according to the sensitive area, wherein the occlusion parameters at least comprise one of the following parameters: shielding multiplying power and shielding type;
and updating the occlusion parameter under the condition that the first picture is changed.
6. The method according to claim 5, wherein the updating the occlusion parameter in case of a change in the first picture comprises:
storing the current configuration shielding parameters of the target area;
and under the condition that the video monitoring picture is changed, updating the configuration shielding parameters of the target area according to the coordinate position of the target area.
7. A privacy preserving apparatus for video surveillance, comprising:
the acquisition module is used for acquiring a first picture included in the multimedia file;
the occlusion module is configured to occlude the first picture in the first picture when it is determined that the first picture includes a target region and the target region in the first picture satisfies a preset condition.
8. The apparatus of claim 7, further comprising:
the first processing module is used for shielding the target area in the first picture according to a preset first amplification parameter under the condition that the target area is included in the first picture of the video monitoring and meets a preset condition;
and the second processing module is used for processing the target area in the first picture according to a preset second amplification parameter under the condition that the target area is included in the first picture of the video monitoring and does not meet the preset condition.
9. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1 to 6 when executed.
10. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1 to 6.
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| CN202010734006.7A CN112037127A (en) | 2020-07-27 | 2020-07-27 | Privacy shielding method and device for video monitoring, storage medium and electronic device |
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| CN202010734006.7A CN112037127A (en) | 2020-07-27 | 2020-07-27 | Privacy shielding method and device for video monitoring, storage medium and electronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113055743A (en) * | 2021-03-10 | 2021-06-29 | 珠海安士佳电子有限公司 | Method and system for intelligently pushing video |
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