CN112804519A - Camera shielding detection method and device, electronic equipment and channel gate - Google Patents
Camera shielding detection method and device, electronic equipment and channel gate Download PDFInfo
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- CN112804519A CN112804519A CN202011584140.XA CN202011584140A CN112804519A CN 112804519 A CN112804519 A CN 112804519A CN 202011584140 A CN202011584140 A CN 202011584140A CN 112804519 A CN112804519 A CN 112804519A
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Abstract
The invention discloses a camera shielding detection method, which is applied to a channel gate, wherein the channel gate comprises a camera device, the camera device is arranged on a channel gate panel on any side of the channel, an image acquisition device of the camera device faces to the channel gate on the other side, and the method comprises the following steps: acquiring a gateway image in a preset time period, and executing shielding detection operation on the gateway image to obtain a shielding detection result; determining an occlusion image in the gateway image by using an occlusion detection result, and counting the number of the occlusion images; when the number is larger than a first threshold value, it is determined that the image pickup apparatus is occluded. The method can judge the shielding condition in front of the camera equipment by utilizing the gateway image shot in the gateway and output the judgment result in time, thereby avoiding the camera equipment from generating wrong gateway detection results under the shielding condition. The invention also discloses a camera shielding detection device, electronic equipment, a channel gate and a storage medium, and the camera shielding detection device has the beneficial effects.
Description
Technical Field
The invention relates to the field of channel gates, in particular to a camera shielding detection method and device, electronic equipment, a channel gate and a storage medium.
Background
With the increasing security awareness of the masses, more and more places begin to use the tunnel gate for personnel management. The channel gate generally utilizes grating equipment to detect, but is influenced by factors such as grating quantity, installation position, etc., and the detection range of grating is limited, has the detection dead angle. The detection range which can be covered by the video acquisition device is larger than that of the grating equipment, so that the problem of dead angles existing in grating detection can be solved by adopting video detection to assist the grating detection.
In the related art, the motion condition of an object in a channel gate is detected by using a video, a video picture in the channel gate needs to be acquired, picture information needs to be detected, but when video acquisition equipment is shielded, an error gate detection result is generated, and the detection effect is influenced.
Disclosure of Invention
The invention aims to provide a camera shielding detection method, a camera shielding detection device, electronic equipment, a gateway and a storage medium, which can judge the shielding situation in front of camera equipment by using a gateway image shot in a gateway and output the judgment result in time, so as to avoid the camera equipment from generating wrong gateway detection results under the shielding situation.
In order to solve the technical problem, the invention provides a camera shielding detection method, which is applied to a gateway, wherein the gateway comprises a camera device, the camera device is arranged on a gateway panel on any side of the gateway, an image acquisition device of the camera device faces to the gateway on the other side, and the method comprises the following steps:
acquiring a gateway image in a preset time period, and executing shielding detection operation on the gateway image to obtain a shielding detection result;
determining an occlusion image in the gateway image by using the occlusion detection result, and counting the number of the occlusion images;
when the number is larger than a first threshold, it is determined that the image pickup apparatus is occluded.
Optionally, the performing an occlusion detection operation on the gateway image to obtain an occlusion detection result includes:
judging whether a target object exists in the gateway image by using a detection model;
if not, outputting a shielding detection result for judging that the gateway image is a shielding image.
Optionally, the determining, by using a detection model, whether a target object exists in the gateway image includes:
extracting an initial object in the gateway image by using the detection model, and calculating the similarity between the initial object and the target object;
judging whether the similarity is smaller than a second threshold value;
if yes, judging that the target object does not exist in the gateway image;
if not, the target object is judged to exist in the gateway image.
Optionally, after determining that the image capturing apparatus is occluded, the method further includes:
and sending alarm information indicating that the camera equipment is shielded to an alarm device so as to enable the alarm device to carry out alarm prompt operation.
The invention also provides a camera shielding detection device, comprising:
the detection module is used for acquiring a gateway image in a preset time period and executing shielding detection operation on the gateway image to obtain a shielding detection result;
the statistic module is used for determining the occlusion images in the gateway images by using the occlusion detection results and counting the number of the occlusion images;
and the judging module is used for judging that the image pickup equipment is blocked when the number is larger than a first threshold value.
Optionally, the detection module includes:
the image acquisition submodule is used for acquiring a gateway image in a preset time period;
the detection submodule is used for judging whether a target object exists in the gateway image or not by using a detection model; and the output sub-module is used for outputting a judgment result for judging the gateway image to be a shielding image.
Optionally, the detection submodule includes:
the extraction unit is used for extracting an initial object in the gateway image by using the detection model and calculating the similarity between the initial object and the target object;
and the judging unit is used for judging whether the similarity is smaller than a second threshold value.
The present invention also provides an electronic device comprising:
a memory for storing a computer program;
and a processor, configured to implement the steps of the camera occlusion detection method as described above when executing the computer program.
The invention also provides a gateway gate, which comprises the camera device and the electronic device of claim 8, wherein the camera device comprises a first camera and a second camera, and the first camera and the second camera are oppositely arranged on the gateway gate panels at two sides of the gateway.
The invention further provides a storage medium, wherein a computer program is stored on the storage medium, and when being executed by a processor, the computer program realizes the steps of the camera occlusion detection method.
The invention provides a camera shielding detection method, which is applied to a gateway, wherein the gateway comprises a camera device, the camera device is arranged on a gateway panel on any side of the gateway, an image acquisition device of the camera device faces to the gateway on the other side, and the method comprises the following steps: acquiring a gateway image in a preset time period, and executing shielding detection operation on the gateway image to obtain a shielding detection result; determining an occlusion image in the gateway image by using the occlusion detection result, and counting the number of the occlusion images; when the number is larger than a first threshold, it is determined that the image pickup apparatus is occluded.
Therefore, the invention firstly executes the shielding detection operation on the gateway image shot on the channel gate, judges whether the gateway image contains shielding information or not and obtains the shielding detection result. Because the single shielding detection result may have the erroneous judgment condition, the invention determines the number of shielding images containing shielding information in the gateway image by using the shielding detection result, and when the number of the shielding images is larger than the first threshold value, the camera device is judged to be shielded, so that the erroneous judgment condition can be avoided, the shielding condition in front of the camera device is finally and effectively judged, and the error generation of the gateway detection result caused by the shielding of the camera device is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of an image capturing apparatus installed in a tunnel barrier according to an embodiment of the present invention;
fig. 2 is a flowchart of a camera occlusion detection method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another image capturing apparatus installed in a tunnel barrier according to an embodiment of the present invention;
fig. 4 is a block diagram of a camera occlusion detection device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the related art, the motion condition of an object in a channel gate is detected by using a video, a video picture in the channel gate needs to be acquired, picture information needs to be detected, but when video acquisition equipment is shielded, an error gate detection result is generated, and the detection effect is influenced. According to the embodiment of the invention, the blocking condition in front of the image pickup equipment can be judged by utilizing the gateway image shot in the gateway and the judgment result can be output in time, so that the image pickup equipment is prevented from generating a wrong gateway detection result under the blocking condition.
The gateway shielding method provided by the embodiment of the invention is applied to a gateway, the gateway comprises a camera device, the camera device is installed on a gateway panel on any side of the gateway, an image acquisition device of the camera device faces to the gateway on the other side, please refer to fig. 1, fig. 1 is a schematic diagram of the camera device installed on the gateway provided by the embodiment of the invention, and it can be seen that the camera device 20 is installed on an inner panel 10 of the gateway. It should be noted that, the embodiment of the present invention does not limit the installation position and the specific orientation angle of the image capturing device on the inner side panel of the tunnel gate, as long as the image captured by the image capturing device can completely cover the inner side panel of the tunnel gate on the opposite side, and the user can set the image according to the actual application requirements. In a possible case, since the image captured by the image capturing apparatus tends to completely cover the opposite tunnel gate inner panel when mounted at the center of the tunnel gate inner panel, it is preferable in the embodiment of the present invention that the image capturing apparatus be mounted at the center of the tunnel gate inner panel. The embodiment of the invention also does not limit the number of the camera devices, and the user can set the camera devices according to the actual application requirements.
Referring to fig. 2, fig. 2 is a flowchart of a camera occlusion detection method according to an embodiment of the present invention. The method can comprise the following steps:
s100, acquiring a gateway image in a preset time period, and executing shielding detection operation on the gateway image to obtain a shielding detection result.
It should be noted that, in the embodiment of the present invention, specific values of the preset time period are not limited, and the user may set the time period according to actual application requirements, for example, the time period may be 1 second, or may also be 3 seconds, or may also be other values.
The embodiment of the invention also does not limit the acquisition source of the gateway image, for example, the gateway image can be obtained by directly shooting by using a camera and can be extracted from the video of the shooting channel gateway. The embodiment of the present invention does not limit the number of acquired gateway images, and a user may set the number according to the actual application requirements, for example, 1, 5, or other user-defined numbers, and certainly, when the gateway images are extracted from the video of the shooting gateway, the number of the gateway images may also be the number of all frames included in the video of the preset time period length. The embodiment of the present invention also does not limit the time interval between the acquisition of each gateway image within the preset time period, for example, the time interval may be a random time interval or a fixed time interval. Since acquiring the gateway images at fixed time intervals in the preset time period is easy to implement, in the embodiment of the present invention, the gateway images may be acquired at fixed time intervals in the preset time period. The embodiment of the present invention does not limit the specific value of the fixed time interval, and the user may set the value according to the actual application requirement, it can be understood that the value of the fixed time interval should be smaller than the value of the preset time period, for example, when the preset time period is 3 seconds, the value of the fixed time interval may be 1 second, 1.5 seconds, and the like, and when the gateway image is extracted from the video of the shooting gateway, the value of the fixed time interval may also be equal to the interval time of the video shooting device for collecting each frame of image.
It can be understood that, since the image capturing apparatus in the embodiment of the present invention is used for detecting the object motion condition in the gateway, it is necessary to ensure that the image captured by the image capturing apparatus can cover a sufficient detection space; simultaneously, this camera equipment is installed on the passageway flashboard of gateway arbitrary side, and camera equipment's image acquisition device just to opposite side banister, when not sheltering from in the banister, the gateway image that camera equipment gathered is the inside panel of offside banister, consequently in order to let the detection area of gateway image cover the gateway space, needs the gateway image can be complete to shoot the inside panel of offside banister, just so can ensure to detect the condition of sheltering from of offside banister completely. The embodiment of the invention does not limit other shooting parameters of the gateway image, as long as the requirement of the shielding detection operation can be met.
It should be noted that, the embodiment of the present invention also does not limit the specific process of such a detection operation, and the process may be to detect a region with lower brightness in the gateway image, and determine whether the gateway image is an occlusion image according to whether the area of the region is larger than a preset threshold, or detect a target object in the gateway image, and determine whether the gateway image is an occlusion image according to whether the target object exists in the gateway image.
In one possible case, performing an occlusion detection operation on the gateway image to obtain an occlusion detection result may include:
step 10: judging whether a target object exists in the gateway image by using the detection model;
step 11: if not, outputting a shielding detection result for judging that the gateway image is a shielding image;
step 12: if yes, judging the gateway image as a normal gateway image.
It should be noted that the target object is not limited in the embodiment of the present invention, and the target object may be a certain mark attached to the inner panel of the opposite side channel gate, a certain feature on the inner panel of the opposite side channel gate, or the inner panel of the opposite side channel gate itself. Since various blocking conditions in the channel gate can be determined when the inner panel of the opposite channel gate is detected, in the embodiment of the present invention, the target object may be the inner panel of the opposite channel gate.
The embodiment of the present invention also does not limit the implementation form of the detection model, and may be implemented by, for example, an SSD image detection algorithm, a Fast RCNN image detection algorithm, or a YOLO image detection algorithm, where SSD (Sum of Squared Differences, error Sum of squares algorithm), Fast RCNN is a Fast target detection algorithm based on R-CNN and Fast RCNN, and YOLO (young Only loon) is an object identification and location algorithm based on a deep neural network. The embodiment of the present invention also does not limit the specific process of detecting the target by using the detection model, the process is related to the specific implementation form of the detection model, and the user may refer to the related technology according to the specific implementation form, for example, the user may compare the features of the existing target object template with the gateway image, or may directly detect the feature information in the gateway image by using the deep learning technology.
In one possible case, the determining whether the target object exists in the gateway image using the detection model may include:
step 20: extracting an initial object in the gateway image by using the detection model, and calculating the similarity between the initial object and a target object;
step 21: judging whether the similarity is smaller than a second threshold value;
step 22: if yes, judging that no target object exists in the gateway image;
step 23: if not, the target object is judged to exist in the gateway image.
In the embodiment of the invention, the detection model judges whether the target object exists in the gateway image by utilizing the similarity of the initial object and the target object. When the gateway has a shielding condition, the characteristics of part of the target object are shielded, and the similarity between the initial object and the target object extracted by the detection model is reduced. Therefore, the embodiment of the invention can determine whether the shielding condition exists in front of the camera equipment or not by judging whether the target object exists in the gateway image or not.
It should be noted that, the embodiment of the present invention does not limit the specific value of the second threshold, and the user may set the second threshold according to the actual application requirement.
S101, determining an occlusion image in the gateway image by using an occlusion detection result, and counting the number of the occlusion images.
Because the method for judging whether the image pickup equipment has the shielding in front of the image pickup equipment by using the single shielding image can have misjudgment, the embodiment of the invention judges the shielding condition in the channel gate by using the number of the shielding images, and can effectively avoid the misjudgment condition.
And S102, when the number is larger than a first threshold value, judging that the image pickup equipment is blocked.
It should be noted that, in the embodiment of the present invention, specific numerical values of the first threshold are not limited, and a user may set the first threshold according to actual application requirements, and it should be understood that the numerical value of the first threshold should be less than or equal to the number of acquired gateway images, for example, when the number of acquired gateway images is 100, the first threshold may be 80, and may also be 100.
Further, the embodiment of the present invention does not limit the specific application of the tunnel gate to the determination result of determining that the image pickup apparatus is blocked, and may be used to send an instruction to prohibit closing to the gate, perform an alarm prompting operation, or be a combination of multiple applications, for example. In one possible case, the gateway gate may use a determination result of determining that the image pickup apparatus is occluded for performing an alarm operation, and after determining that the image pickup apparatus is occluded, further includes:
step 30: and sending alarm information indicating that the camera equipment is shielded to an alarm device so as to enable the alarm device to carry out alarm prompt operation.
It should be noted that, the embodiment of the present invention does not limit the specific form of the alarm information, as long as the alarm information can be accurately transmitted. The embodiment of the invention also does not limit the specific steps of the alarm prompting operation of the alarm device, and the user can refer to the related technology of the alarm prompting.
Therefore, the invention firstly executes the shielding detection operation on the gateway image shot on the channel gate, judges whether the gateway image contains shielding information or not and obtains the shielding detection result. Because the single shielding detection result may have the erroneous judgment condition, the invention determines the number of shielding images containing shielding information in the gateway image by using the shielding detection result, and when the number of the shielding images is larger than the first threshold value, the camera device is judged to be shielded, so that the erroneous judgment condition can be avoided, the shielding condition in front of the camera device is finally and effectively judged, and the error generation of the gateway detection result caused by the shielding of the camera device is avoided.
The following describes a camera occlusion detection device, an electronic device, a gateway and a storage medium according to embodiments of the present invention, and the camera occlusion detection device, the electronic device, the gateway and the storage medium described below and the camera occlusion detection method described above may be referred to in correspondence.
Referring to fig. 3, fig. 3 is a block diagram of a camera occlusion detection device according to an embodiment of the present invention, where the camera occlusion detection device may include:
the detection module 100 is configured to acquire a gateway image within a preset time period, and perform occlusion detection operation on the gateway image to obtain an occlusion detection result;
the statistical module 200 is configured to determine an occlusion image in the gateway image by using the occlusion detection result, and count the number of the occlusion images;
the determining module 300 is configured to determine that the channel gate is blocked when the number is greater than the first threshold.
Optionally, the detection module 100 may include:
the image acquisition submodule is used for acquiring a gateway image in a preset time period;
the detection submodule is used for judging whether a target object exists in the gateway image or not by using the detection model; and the output sub-module is used for outputting a judgment result of judging that the gateway image is the shielding image.
Optionally, the detection sub-module may include:
the extraction unit is used for extracting an initial object in the gateway image by using the detection model and calculating the similarity between the initial object and a target object;
and the judging unit is used for judging whether the similarity is smaller than a second threshold value.
Optionally, the camera occlusion detection device may further include:
and the alarm information sending module is used for sending the alarm information indicating that the channel gate is blocked to the alarm device so as to enable the alarm device to carry out alarm prompt operation.
An embodiment of the present invention further provides an electronic device, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the camera occlusion detection method when executing the computer program.
Since the embodiment of the electronic device portion corresponds to the embodiment of the camera occlusion detection method portion, please refer to the description of the embodiment of the camera occlusion detection method portion for the embodiment of the electronic device portion, and details are not repeated here.
The embodiment of the invention also provides a channel gate, which comprises the camera equipment and the electronic equipment in the embodiment, wherein the camera equipment comprises a first camera and a second camera, and the first camera and the second camera are oppositely arranged on the channel gate panels at two sides of the channel. Referring to fig. 4, fig. 4 is a schematic view illustrating another image pickup apparatus installed in a tunnel gate according to an embodiment of the present invention. As can be seen from fig. 4, two cameras 40 are oppositely mounted on the inner panels of the aisle gates 30 on both sides of the gate.
Under the influence of factors such as optical characteristics of the camera, if the camera is mounted on the inner panel on one side of the channel gate, the camera can only ensure that the detection range of the camera covers the channel gate area on the opposite side, but cannot ensure that the detection range of the camera covers the channel gate area on the camera mounting side under the condition of meeting the image acquisition requirement of the channel gate described in the above embodiment. The passage area on the camera mounting side will have dead angles for detection. Therefore, the embodiment of the invention adopts the mode that the cameras are oppositely arranged on the inner side panels of the passage gates on the two sides, so that the detection dead angle of one camera can be ensured to be covered by the detection range of the other camera, and finally, the whole gate space can be ensured to be detected.
The embodiment of the present invention further provides a storage medium, where a computer program is stored on the storage medium, and when the computer program is executed by a processor, the steps of the camera occlusion detection method according to any of the above embodiments are implemented. If the computer program is executed by the processor, acquiring a gateway image in a preset time period, and executing shielding detection operation on the gateway image to obtain a shielding detection result; determining an occlusion image in the gateway image by using an occlusion detection result, and counting the number of the occlusion images; when the number is larger than a first threshold value, it is determined that the image pickup apparatus is occluded.
The storage medium may include: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The method and the device for detecting camera occlusion, the electronic device, the channel gate and the storage medium provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The camera shielding detection method is applied to a gateway, the gateway comprises a camera device, the camera device is installed on a gateway panel on any side of the gateway, an image acquisition device of the camera device faces the gateway on the other side, and the method comprises the following steps:
acquiring a gateway image in a preset time period, and executing shielding detection operation on the gateway image to obtain a shielding detection result;
determining an occlusion image in the gateway image by using the occlusion detection result, and counting the number of the occlusion images;
when the number is larger than a first threshold, it is determined that the image pickup apparatus is occluded.
2. The camera occlusion detection method of claim 1, wherein the performing occlusion detection operations on the gateway images to obtain occlusion detection results comprises:
judging whether a target object exists in the gateway image by using a detection model;
if not, outputting a shielding detection result for judging that the gateway image is a shielding image.
3. The camera occlusion detection method according to claim 2, wherein the determining whether the target object exists in the gateway image by using the detection model comprises:
extracting an initial object in the gateway image by using the detection model, and calculating the similarity between the initial object and the target object;
judging whether the similarity is smaller than a second threshold value;
if yes, judging that the target object does not exist in the gateway image;
if not, the target object is judged to exist in the gateway image.
4. The camera occlusion detection method according to claim 1, further comprising, after determining that the image pickup apparatus is occluded:
and sending alarm information indicating that the camera equipment is shielded to an alarm device so as to enable the alarm device to carry out alarm prompt operation.
5. The utility model provides a camera shelters from detection device which characterized in that includes:
the detection module is used for acquiring a gateway image in a preset time period and executing shielding detection operation on the gateway image to obtain a shielding detection result;
the statistic module is used for determining the occlusion images in the gateway images by using the occlusion detection results and counting the number of the occlusion images;
and the judging module is used for judging that the image pickup equipment is blocked when the number is larger than a first threshold value.
6. The camera occlusion detection device of claim 5, wherein said detection module comprises:
the image acquisition submodule is used for acquiring a gateway image in a preset time period;
the detection submodule is used for judging whether a target object exists in the gateway image or not by using a detection model;
and the output sub-module is used for outputting a judgment result for judging the gateway image to be a shielding image.
7. The camera occlusion detection device of claim 6, wherein said detection submodule comprises:
the extraction unit is used for extracting an initial object in the gateway image by using the detection model and calculating the similarity between the initial object and the target object;
and the judging unit is used for judging whether the similarity is smaller than a second threshold value.
8. An electronic device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the camera occlusion detection method of any of claims 1 to 4 when executing said computer program.
9. An access gate, comprising a camera device and the electronic device of claim 8, wherein the camera device comprises a first camera and a second camera, and the first camera and the second camera are oppositely mounted on the access gate panel at two sides of the access gate.
10. A storage medium having stored thereon a computer program for implementing the steps of the camera occlusion detection method according to any of claims 1 to 4 when executed by a processor.
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