CN110996041A - Automatic inspection method and system for image acquisition equipment - Google Patents
Automatic inspection method and system for image acquisition equipment Download PDFInfo
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- CN110996041A CN110996041A CN201910979393.8A CN201910979393A CN110996041A CN 110996041 A CN110996041 A CN 110996041A CN 201910979393 A CN201910979393 A CN 201910979393A CN 110996041 A CN110996041 A CN 110996041A
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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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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
- G07C1/20—Checking timed patrols, e.g. of watchman
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
Abstract
The invention discloses an automatic inspection method and system of image acquisition equipment, which comprises the following steps: s100: acquiring a first image shot by image acquisition equipment at a current preset position; s200: when the interested target exists in the first image, acquiring a partial image containing the interested target in the first image as a second image, calculating the proportion of the interested target in the second image, and executing the step S300 by taking the second image as a current image; s300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, otherwise, executing a step S500; s400: storing the object of interest as a close-up of the object; s500: acquiring an enlarged image of the second image as a third image; s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by taking the third image as the current image until the ratio reaches a set ratio, and storing the interested target; the close-up of the target with accurate positioning is effectively obtained.
Description
Technical Field
The invention relates to the technical field of image acquisition, in particular to an automatic inspection method and an automatic inspection system for image acquisition equipment.
Background
In the field of safety production, monitoring equipment is generally required to be capable of seeing a large-scale operation area, and detail characteristics of potential safety hazards are required to be visible. By installing the zoom lens, the camera can shoot targets with different distances; by installing the holder, the camera can shoot targets in different directions; combining the two, it is possible to capture detailed images of a wide range of scenes and specific objects.
Some manufacturers have developed gun and ball linkages to meet these needs. Specifically, a wide-angle lens gun camera is added with a ball machine, the gun camera is responsible for monitoring a large-range area, when an interested target is found, the direction and the focal length of the ball machine are controlled manually or automatically, the interested target is drawn close, and the detailed characteristics of the interested target are shot. The device well meets the requirements, but has the defect of higher cost, and in the automatic control process, because the target is pulled close by one-time control, under the influence of calibration errors and control errors, the situation that the target of interest deviates from the picture after being amplified sometimes occurs, and the application and popularization of the device are limited by the factors.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an automatic inspection method and system for image acquisition equipment, which avoid the defect that an interested target deviates from an image picture after amplification and effectively obtain the close-up of the inspection target with accurate positioning.
The invention provides an automatic inspection method of image acquisition equipment, which comprises the following steps:
s100: acquiring a first image shot by image acquisition equipment at a current preset position;
s200: when the object of interest exists in the first image, acquiring a partial image containing the object of interest in the first image as a second image, calculating the proportion of the object of interest in the second image, and performing step S300 with the second image as a current image;
s300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, otherwise, executing a step S500;
s400: storing the object of interest as a target feature;
s500: acquiring an amplified image of the second image as a third image, wherein the third image comprises an amplified interested target;
s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by using the third image as the current image until the ratio reaches a set ratio, and storing the interested target.
Further, after storing the target of interest, other targets of interest in the current preset position are obtained until the storage of all the targets of interest in the current preset position is completed.
Further, after the storage of all the target features in the current preset position is finished, the image acquisition equipment enters the next preset position until all the preset positions are finished.
Further, acquiring the enlarged image of the second image as a third image includes:
judging whether the zoom multiple of the image acquisition equipment reaches an upper limit;
if yes, directly storing the interested target;
and if not, acquiring the amplified image of the second image.
Further, when the enlarged image of the second image is acquired as the third image, specifically, the target region of interest in the second image is enlarged.
Further, the target of interest after being magnified is a target closest to the center of the picture in the magnified second image.
Further, when the object of interest is not present in the first image, the image capture device directly enters the next preset position.
An automatic inspection system of image acquisition equipment comprises a first acquisition module, a second acquisition module, a first judgment module, a third acquisition module and a storage module;
the first acquisition module is used for acquiring a first image shot by the image acquisition equipment at a current preset position and entering the second acquisition module;
the second acquisition module is used for acquiring a partial image containing an interested target in the first image as a second image when the interested target exists in the first image, calculating the proportion of the interested target in the second image, and taking the second image as a current image to enter the first judgment module;
the first judgment module is used for judging whether the proportion in the current image reaches a set proportion, if not, the third acquisition module is started, and if so, the storage module is started;
the third acquisition module is used for acquiring an image obtained by amplifying the second image as a third image, the third image comprises an amplified interested target, calculating the proportion of the amplified interested target in the third image, taking the third image as a current image, entering the first judgment module, and entering the storage module until the proportion reaches a set proportion;
the storage module is used for storing the object of interest as a close-up of the object.
Further, the device also comprises a second judgment module;
the second judging module is used for judging whether the zoom multiple of the image acquisition equipment reaches an upper limit;
if yes, entering a storage module;
if not, entering a third acquisition module.
A computer readable storage medium having stored thereon a number of get classification programs for being invoked by a processor and performing the steps of:
s100: acquiring a first image shot by image acquisition equipment at a current preset position;
s200: when the object of interest exists in the first image, acquiring a partial image containing the object of interest in the first image as a second image, calculating the proportion of the object of interest in the second image, and performing step S300 with the second image as a current image;
s300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, otherwise, executing a step S500;
s400: storing the object of interest as a close-up of the object;
s500: acquiring an amplified image of the second image as a third image, wherein the third image comprises an amplified interested target;
s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by using the third image as the current image until the ratio reaches a set ratio, and storing the interested target.
The automatic inspection method and the system for the image acquisition equipment provided by the invention have the advantages that: according to the automatic inspection method and system for the image acquisition equipment, provided by the structure of the invention, the target of interest in a scene is effectively amplified for multiple times, so that the defect that the target of interest deviates from an image picture when the target of interest is amplified in the prior art is avoided, the close-up of the inspected target can be effectively obtained by the image acquisition equipment in the automatic inspection process, a clear image of the accurately positioned target is further obtained, the subsequent use is facilitated, the inspection quality and efficiency of the image acquisition equipment are improved, and the defect that the target can be controlled to be pulled in only once in the prior art is overcome.
Drawings
FIG. 1 is a schematic structural diagram of an automatic inspection method of an image acquisition device according to the present invention;
FIG. 2 is a schematic structural diagram of an automatic inspection device of an image acquisition apparatus according to the present invention;
FIG. 3 is a schematic flow chart of an automatic inspection system of an image acquisition device according to the present invention;
the system comprises a first acquisition module, a second acquisition module, a first judgment module, a third acquisition module, a storage module, a second judgment module, a video acquisition module, a target detection and identification module, a 300-automatic inspection control module, a 400-preset position control module, a 500-direction control module and a 600-focus control module, wherein the first acquisition module, the second acquisition module, the first judgment module, the third acquisition module, the storage module, the second judgment module, the video acquisition module, the target detection and identification module, the 300-automatic inspection control module, the preset position control module, the 500-direction.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, and in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Referring to fig. 1, the automatic inspection method for the image acquisition device provided by the invention comprises steps S100 to S500:
s100: acquiring a first image shot by image acquisition equipment at a current preset position;
s200: when the object of interest exists in the first image, acquiring a partial image containing the object of interest in the first image as a second image, calculating the proportion of the object of interest in the second image, and performing step S300 with the second image as a current image;
when the object of interest does not exist in the first image, the image acquisition equipment directly enters the next preset position.
S300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, and if not, executing a step S500;
the set proportion is the ratio of the surface area of the target of interest to the surface area in the current image, and is obtained by calculation, and the target of interest is generally clearly represented in the current image as a better set proportion.
For the current image, that is, the image currently containing the target of interest, if the current image is the second image, it indicates to determine whether the ratio of the target of interest in the second image reaches the set ratio, and if the current image is the ith (i is an integer) image, it indicates to determine whether the ratio of the target of interest in the ith image reaches the set ratio.
S400: storing the object of interest as a close-up of the object;
and after the current preset position finishes storing one of the interested targets, acquiring other interested targets in the current preset position until the storage of all the interested targets in the current preset position is finished. And then, adopting a circular traversal strategy to enable the image acquisition equipment to enter the next preset position, storing the interested target in the next preset position, and obtaining the close-up of the target in the preset position until all preset positions are finished.
S500: acquiring an amplified image of the second image as a third image, wherein the third image comprises an amplified interested target;
s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by using the third image as the current image until the ratio reaches a set ratio, and storing the interested target.
And when the image of the second image after being amplified is taken as a third image, amplifying the interested target area in the second image, selecting the target closest to the center of the image in the second image after being amplified as the interested target after being amplified, and obtaining the third image containing the interested target after being amplified so as to avoid the defect that the interested target is separated from the image during amplification. When the interested target in the third image is still unclear and the zoom factor of the image acquisition equipment does not reach the upper limit, further amplifying the interested target in the third image until the occupation ratio of the interested target in the current image reaches a set proportion, and storing the interested target to obtain clear close-up of the target; in the process of further amplifying the interested target, if the zoom multiple of the image acquisition equipment reaches the upper limit, storing the interested target corresponding to the image acquisition equipment when the zoom multiple of the image acquisition equipment reaches the upper limit as the close-up of the target corresponding to the interested target.
When the image acquisition equipment is at the next preset position, automatic inspection is carried out according to the steps S100 to S500 so as to obtain a clear image of the target of interest at the next preset position, then the clear image enters a third preset position until an Nth preset position, and automatic inspection of the image acquisition equipment is realized, wherein the N preset position is the last automatic inspection position of the image acquisition equipment.
Through steps S100 to S600, the interested target is effectively amplified for a plurality of times, so that the image acquisition equipment can effectively obtain a clear image of close-up of the inspection target in the automatic inspection process, the subsequent use is convenient, and the inspection quality and efficiency of the image acquisition equipment are improved.
When more than one interested target exists in the first image, firstly, one interested target in the first image is correspondingly amplified to obtain a clear interested target with a certain size, and then, the rest interested targets in the first image are correspondingly amplified one by one to obtain the amplification of all the interested targets obtained at the current preset position, so as to obtain the close-up of the targets corresponding to the interested targets.
In the process that the image acquisition equipment gradually amplifies a plurality of interested targets on a current preset position, a first image is a corresponding image when an integral large scene is subjected to image acquisition, namely the interested targets appearing in the first image are targets needing amplification processing in the current preset position, after the first interested target is subjected to successive amplification to obtain close-up of the targets, the focal length position of the image acquisition equipment when the first image is acquired is returned, then the second interested target is subjected to successive amplification, and when the target is switched to another interested target every time, the image acquisition equipment returns the focal length position when the first image is acquired; until the amplification of the plurality of objects of interest at the current preset position is completed. Then the next preset position is entered, at which the acquisition and amplification of the object of interest coincides with that at the first preset position.
Therefore, the interested target can be successively amplified only by the ball machine, so that the defect of high cost caused by combined use of a traditional gun camera and the ball machine is avoided on one hand, and the defects of deviation of the interested target from a picture and unclear of the interested target caused by once amplification of the interested target in place by the traditional ball machine are avoided on the other hand.
In steps S100 to S600, as shown in fig. 2, an automatic inspection device of an image capturing apparatus may be provided, including a video capturing module 100, a target detecting and identifying module 200, an automatic inspection control module 300, a preset position control module 400, a direction control module 500, and a focus control module 600, an output end of the video capturing module 100 is connected to an input end of the target detecting and identifying module 200, the target detecting and identifying module 200 is interactively connected to the automatic inspection control module 300, an output end of the automatic inspection control module 300 is respectively connected to an input end of the preset position control module 400, an input end of the direction control module 500, and an input end of the focus control module 600, and an output end of the preset position control module 400 is respectively connected to an input end of the direction control module 500 and an input end of the focus control module 600. The video capture module 100 corresponds to an image capture device, and the direction control module 500 and the focus control module 600 are used to adjust the direction and focus of the image capture device. The video capture module 100 corresponds to an image capture terminal of an image capture device.
Firstly, the preset position control module 400 controls the direction control module 500 to point the direction of the image capturing device to the current preset position through the channel 2, controls the focal length control module 600 through the channel 3 to adjust the focal length of the image capturing device, and then the video capturing module 100 periodically transmits the first image captured at the current preset position to the target detection and identification module 200 through the channel 8. The target detection and identification module 200 uploads the first image to the automatic inspection control module 300, and the automatic inspection control module 300 determines whether the target of interest is clear (i.e. whether the ratio reaches a set ratio), and if not, the automatic inspection control module 300 magnifies the target of interest in the second image by a certain factor through the channel 6 and the channel 7 and then centers the magnified target, obtaining a third image, judging whether the interested target in the third image is clear again, and on the basis that the focal length of the image acquisition equipment can be amplified, the target of interest can be amplified in multiple steps, and the obtained clear target of interest is taken as the close-up of the target, when an image of an interested target after amplification is obtained each time, a corresponding image uploaded by the image acquisition device is obtained through the target detection and identification module 200, and the corresponding image is sent to the automatic inspection control module 300. Therefore, the automatic inspection control module 300 and the target detection and identification module 200 are combined for use, the positioning accuracy of the interested target is improved, the defect that the image picture of the interested target deviates due to the fact that the interested target is amplified after the interested target is amplified in the prior art is overcome, the interested target with accurate positioning can be obtained by amplifying the interested target for multiple times, the defect that the target can be controlled to be pulled in only one time in the prior art is overcome, and the method and the device have the advantages of being low in cost and accurate in positioning.
In step S400: before the enlarged image of the second image is taken as a third image, the method comprises the following steps:
s401: judging whether the zoom multiple of the image acquisition equipment reaches an upper limit;
if yes, go to step S402;
if not, the process goes to step S403;
s402: directly storing the object of interest as a close-up of the object;
and if not, acquiring the amplified image of the second image.
Because the zoom factor of the image acquisition device is limited, for example, a camera cannot always amplify an interested target, before the amplified interested target is acquired, whether the image acquisition device reaches the upper limit is judged first to judge whether the interested target can be amplified further, when the interested target is unclear and needs to be amplified further, the hardware amplification of the image acquisition device reaches the upper limit, and the interested target at the moment is saved as the close-up of the target, but if the zoom factor is not limited to the amplification upper limit of the existing image acquisition device, the close-up of the target with a certain proportion and clearness can be finally obtained.
As shown in fig. 3, an automatic inspection system of an image capturing device includes a first obtaining module 10, a second obtaining module 20, a first determining module 30, a third obtaining module 40, and a storage module 50;
the first obtaining module 10 is configured to obtain a first image shot by the image capturing device at a current preset position, and enter the second obtaining module 20;
the second obtaining module 20 is configured to, when there is a close-up of the object in the first image, obtain a partial image of the first image containing the close-up of the object as a second image, calculate a proportion of the object of interest in the second image, and enter the first judging module 30 as the current image;
the first judging module 30 is configured to judge whether the ratio in the current image reaches a set ratio, if not, enter the third obtaining module 40, and if so, enter the storing module 50;
the third obtaining module 40 is configured to obtain the enlarged image of the second image as a third image, where the third image includes a close-up of the enlarged target, calculate a ratio of the close-up of the enlarged target in the third image, and enter the first judging module 30 with the third image as a current image, until the ratio reaches a set ratio, and then enter the storage module 50;
the storage module 50 is used to store the object of interest as a close-up of the object.
Further, a second judging module 60 is also included;
the second judging module 60 is configured to judge whether the zoom multiple of the image capturing apparatus reaches an upper limit;
if yes, entering the storage module 50;
if not, the third obtaining module 40 is entered.
A computer readable storage medium having stored thereon a number of get classification programs for being invoked by a processor and performing the steps of:
s100: acquiring a first image shot by image acquisition equipment at a current preset position;
s200: when the object of interest exists in the first image, acquiring a partial image containing the object of interest in the first image as a second image, calculating the proportion of the object of interest in the second image, and performing step S300 with the second image as a current image;
s300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, otherwise, executing a step S500;
s400: storing the object of interest as a close-up of the object;
s500: acquiring an amplified image of the second image as a third image, wherein the third image comprises an amplified interested target;
s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by using the third image as the current image until the ratio reaches a set ratio, and storing the interested target.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. An automatic inspection method of image acquisition equipment is characterized by comprising the following steps:
s100: acquiring a first image shot by image acquisition equipment at a current preset position;
s200: when the object of interest exists in the first image, acquiring a partial image containing the object of interest in the first image as a second image, calculating the proportion of the object of interest in the second image, and performing step S300 with the second image as a current image;
s300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, otherwise, executing a step S500;
s400: storing the object of interest as a close-up of the object;
s500: acquiring an amplified image of the second image as a third image, wherein the third image comprises an amplified interested target;
s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by using the third image as the current image until the ratio reaches a set ratio, and storing the interested target.
2. The automatic inspection method for the image acquisition equipment according to claim 1, wherein after storing the object of interest, other objects of interest in the current preset position are acquired until the storage of all the objects of interest in the current preset position is completed.
3. The automatic inspection method for the image acquisition equipment according to claim 2, wherein after the storage of all the target features in the current preset position is completed, the image acquisition equipment enters the next preset position until all the preset positions are completed.
4. The automatic inspection method according to claim 1, wherein before the enlarged second image is taken as a third image, the method includes:
judging whether the zoom multiple of the image acquisition equipment reaches an upper limit;
if yes, directly storing the interested target feature;
and if not, acquiring the amplified image of the second image.
5. The automatic inspection method according to claim 1, wherein when the enlarged image of the second image is obtained as a third image, specifically, the target area of interest in the second image is enlarged;
and the interest target after being amplified is a target which is closest to the center of the picture in the second image after being amplified.
6. The automatic inspection method for the image acquisition equipment according to any one of claims 1 to 5, wherein when the first image does not have the object of interest, the image acquisition equipment directly enters the next preset position.
7. An automatic inspection device of image acquisition equipment is characterized by comprising a video acquisition module (100), a target detection and identification module (200), an automatic inspection control module (300), a preset position control module (400), a direction control module (500) and a focal length control module (600);
the output of video acquisition module (100) is connected with the input of target detection identification module (200), target detection identification module (200) is connected with automatic inspection control module (300) interactive, the output of automatic inspection control module (300) respectively with the input of preset position control module (400), the input of direction control module (500), the input of focus control module (600) is connected, the output of preset position control module (400) respectively with the input of direction control module (500), the input of focus control module (600) is connected.
8. An automatic inspection system of image acquisition equipment is characterized by comprising a first acquisition module (10), a second acquisition module (20), a first judgment module (30), a third acquisition module (40) and a storage module (50);
the first acquisition module (10) is used for acquiring a first image shot by the image acquisition equipment at a current preset position and entering the second acquisition module (20);
the second acquisition module (20) is used for acquiring a partial image containing the interested target in the first image as a second image when the interested target exists in the first image, calculating the proportion of the interested target in the second image, and taking the second image as a current image to enter the first judgment module (30);
the first judging module (30) is used for judging whether the proportion in the current image reaches a set proportion, if not, the third obtaining module (40) is entered, and if so, the storage module (50) is entered;
the third acquisition module (40) is used for acquiring an image obtained by amplifying the second image as a third image, the third image comprises an amplified interested target, calculating the proportion of the amplified interested target in the third image, and taking the third image as a current image to enter the first judgment module (30) until the proportion reaches a set proportion, and then entering the storage module (50);
the storage module (50) is used for storing the object of interest as a close-up of the object.
9. The automatic inspection system according to claim 8, further comprising a second determination module (60);
the second judgment module (60) is used for judging whether the zoom multiple of the image acquisition equipment reaches the upper limit;
if yes, entering a storage module (50);
if not, the third acquisition module (40) is entered.
10. A computer readable storage medium having stored thereon a number of get classification programs for being invoked by a processor and performing the steps of:
s100: acquiring a first image shot by image acquisition equipment at a current preset position;
s200: when the object of interest exists in the first image, acquiring a partial image containing the object of interest in the first image as a second image, calculating the proportion of the object of interest in the second image, and performing step S300 with the second image as a current image;
s300: judging whether the ratio in the current image reaches a set ratio, if so, executing a step S400, otherwise, executing a step S500;
s400: storing the object of interest as a close-up of the object;
s500: acquiring an amplified image of the second image as a third image, wherein the third image comprises an amplified target of interest;
s600: calculating the ratio of the amplified interested target in the third image, and executing the step S300 by using the third image as the current image until the ratio reaches a set ratio, and storing the interested target.
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