CN107290752B - Optical lens detection method and detector - Google Patents
Optical lens detection method and detector Download PDFInfo
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- CN107290752B CN107290752B CN201610192059.4A CN201610192059A CN107290752B CN 107290752 B CN107290752 B CN 107290752B CN 201610192059 A CN201610192059 A CN 201610192059A CN 107290752 B CN107290752 B CN 107290752B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/04—Systems determining the presence of a target
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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Abstract
The invention discloses an optical lens detection method and a detector, wherein the detection method comprises the following steps: emitting detection light; receiving reflected light of the detected light; the reflected light is analyzed, and whether the reflected light is reflected by the optical lens is determined based on the analysis result. The invention detects whether the optical lens exists by receiving and analyzing the reflected light of the detection light, so that the detection of the optical lens is more convenient and accurate. Meanwhile, the invention also has the functions of interfering and destroying the secret recorder by the optical lens, so that the secret recorder cannot shoot images and can burn the imaging chip.
Description
Technical Field
The invention relates to the field of optics, in particular to an optical lens detection method and a detector.
Background
In recent years, the image shooting technology is rapidly developed, the traditional film and magnetic tape are converted into digital recording and storage, the number of pixels is more than ten thousand, the shooting distance is up to hundreds of meters, the shooting is not damaged, the diameter of a lens is less than 1mm, the volume of the equipment is smaller, and even a pinhole camera smaller than 10 x 8mm appears.
Advanced photography is easily utilized to conduct illegal privacy-stealing activities, and secret photographing and camera shooting become important privacy-stealing means for stealing national secrets, business secrets and personal privacy. Meanwhile, the performance and the volume of civil cameras and video cameras are higher and lower, and with the increasing popularity of digital high-Definition Video Recorders (DVRs), digital products such as pens for recording and video recording, mini-cameras, mobile phones for photographing and shooting and the like are also widely used. A person holding various photographing apparatuses can easily acquire confidential information through a handheld or mini photographing apparatus, thereby constituting a great threat to national secrets, business secrets, and personal privacy.
In order to prevent the secret from being stolen by using modern photographing and shooting tools, a device capable of effectively detecting photographing and shooting is needed to prevent confidential information from being stolen.
In the related art, it is mainly assumed that a position where an optical lens exists in a surrounding area is judged by a human eye (because the optical lens has a flare point) in order to detect the optical lens, and then disturbance light is emitted to the position using a detector. Obviously, when the optical lens is positioned by the detection method, the detection method completely depends on human eyes, which easily causes errors to the positioning, and causes inaccurate detection and high failure rate of the optical lens. In the case where the lens is located in a very hidden position, it is almost difficult to detect.
Aiming at the problem that the optical lens cannot be accurately detected in the related technology, an effective solution is not provided at present.
Disclosure of Invention
Aiming at the problem that the optical lens cannot be accurately detected in the related technology, the invention provides the optical lens detection method and the optical lens detector, which can enable the detection result of the optical lens to be more accurate, thereby being beneficial to avoiding the occurrence of a candid event.
The technical scheme of the invention is realized as follows:
according to one aspect of the present invention, there is provided an optical lens inspection method.
The detection method comprises the following steps:
emitting detection light;
receiving reflected light of the detected light;
the reflected light is analyzed, and whether the reflected light is reflected by the optical lens is determined based on the analysis result.
When the reflected light is analyzed, the spectral characteristics of the reflected light can be analyzed to determine whether the reflector for detecting the light has a coating or not;
in the case where it is determined that a coating film is present on a reflector detecting light, parameters of an image formed by reflected light are analyzed to determine the shape and size of the reflector.
Accordingly, when the reflected light of the detection light is received, the reflected light reflected by the non-coated reflector in the received reflected light can be filtered by the filter.
Optionally, the detection method further comprises:
under the condition that the reflected light is determined to be reflected by the optical lens, imaging processing is carried out on the reflected light to form an image containing the optical lens;
and determining the position of the optical lens in the current area according to the pre-formed panoramic image of the current area, the corresponding coordinate information and the position information of the reflection detection light in the image containing the optical lens.
Correspondingly, the detection method further comprises the following steps:
depending on the position of the optical lens in the current area, disturbing and/or destroying light is emitted to the optical lens.
According to another aspect of the present invention, an optical lens detector is provided.
The detector comprises:
a light emitting device for emitting detection light;
a detection lens for receiving reflected light of the detection light;
and the processor is used for analyzing the reflected light and determining whether the reflected light is reflected by the optical lens or not based on the analysis result.
Wherein, above-mentioned treater includes:
the first analysis module is used for analyzing the spectral characteristics of the reflected light and determining whether a film is coated on a reflector for detecting the light;
and the second analysis module is used for analyzing the parameters of the image formed by the reflected light and determining the shape and the size of the reflector under the condition of determining that the reflector for detecting the light has the plated film.
Correspondingly, the detection lens comprises a filter for filtering the reflected light reflected by the non-coated reflector in the received reflected light.
Optionally, the detection lens further includes:
the imaging module is used for imaging the reflected light under the condition that the reflected light is determined to be reflected by the optical lens to form an image containing the optical lens;
and the determining module is used for determining the position of the optical lens in the current area according to the pre-formed panoramic image of the current area, the corresponding coordinate information and the position information of the reflection detection light in the image containing the optical lens.
Accordingly, the detector further comprises:
and the interference light emitter and the destroy light emitter are respectively used for emitting interference light and destroy light to the optical lens according to the position of the optical lens in the current area.
Optionally, the light emitting device and the detection lens are rotatably connected to the detector,
in addition, the determining module may include a first determining submodule configured to determine, according to a pre-formed panoramic image of the current area and corresponding coordinate information, and coordinate information of an image including the optical lens, position information of the image including the optical lens in the panoramic image;
and the second determining submodule is used for determining the position of the optical lens in the image according to the position information of the image containing the optical lens in the panoramic image and the position information of the reflected detection light in the image containing the optical lens, so that the position of the optical lens in the current area is determined.
The invention detects whether the optical lens exists by emitting the detection light and receiving and analyzing the reflected light of the detection light, even if the optical lens is placed at a hidden position which is difficult to observe by naked eyes or difficult to be expected generally, the optical lens always reflects the detection light, thereby accurately detecting the optical lens and overcoming the defect of naked eye identification; in addition, all the imaging lenses are different from other reflectors, so that the reflected light of the lens is different from the reflected light of other reflectors, whether the reflector is the lens or not is determined after the reflected light of the detection light is analyzed, the detection accuracy can be further ensured, and the other reflectors are prevented from being mistakenly identified as optical lenses.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of an optical lens inspection method according to an embodiment of the invention;
FIG. 2 is a flow chart of an optical lens inspection method according to another embodiment of the present invention;
FIG. 3 is a block diagram of an optical lens detector according to an embodiment of the invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
According to an embodiment of the present invention, there is provided an optical lens detection method.
As shown in fig. 1, the optical lens inspection method according to an embodiment of the present invention includes:
step S101, emitting detection light;
step S103, receiving the reflected light of the detection light;
in step S105, the reflected light is analyzed, and it is determined whether the reflected light is reflected by the optical lens based on the analysis result.
By the scheme, whether the optical lens exists can be detected by receiving and analyzing the reflected light of the detection light, so that the detection of the optical lens is more convenient and accurate, and the occurrence of an event of candid photograph by using the optical lens is effectively prevented.
In order to improve the detection accuracy and efficiency of the optical lens, in one embodiment, when the reflected light is analyzed, the spectral characteristic of the reflected light can be analyzed to determine whether the reflector for detecting the light has a plated film, so that the non-plated reflector is excluded;
in the case that it is determined that the reflective body for detecting light has a coating, since the reflective body having the coating includes not only the lens but also the reflective body such as glasses, and other reflective bodies having a coating such as glasses are different from the lens in shape and size, parameters (such as shape and size) of an image formed by reflected light can be analyzed to determine the shape and size of the reflective body, so that it can be determined which reflective body is an optical lens, not glasses, or a table, a chair, etc.
Accordingly, in one embodiment, when receiving the reflected light of the detection light, the received reflected light reflected by the non-coated reflector may be filtered by the filter. Compare in the sense light after other reflector reflections, the sense light of the camera lens reflection that has the coating film has comparatively unique spectral characteristic, after increasing the filter, make the sense light of the camera lens reflection that has the coating film pass through, and filter the light of other wavelength, can avoid handling a large amount of useless reverberation when carrying out the analysis, effectively improve the analysis efficiency to the reverberation, and then improve optical lens's detection efficiency, help in time detecting optical lens.
Optionally, in an embodiment, in order to determine an accurate position of the optical lens, the detection method according to an embodiment of the present invention may further include:
under the condition that the reflected light is determined to be reflected by the optical lens, imaging processing is carried out on the reflected light to form an image containing the optical lens;
and determines the position of the optical lens in a current area (for example, a general place or a confidential area which needs to be prevented from being shot and photographed) based on the coordinate information of the panoramic image formed in advance and the position information of the reflected detection light in the image including the optical lens.
Accordingly, in order to avoid the optical lens from secretly shooting the region, in an embodiment, the detection method according to an embodiment of the present invention further includes:
and emitting interference light and/or destroying light to the optical lens according to the position of the optical lens in the area to burn out the imager of the optical lens.
In order to better understand the above technical solution of the present invention, the following further explains the detection method of the present invention with reference to the detection flowchart shown in fig. 2.
As shown in fig. 2, in order to avoid detecting and positioning the optical lens by human eyes, the detection method according to the embodiment of the invention can determine whether the optical lens exists and accurately determine the position of the optical lens by analyzing the reflected light. Specifically, first, detecting light is emitted, then, reflected light (spectrum) of the detecting light is received, and the received spectrum is analyzed, specifically, the spectrum analysis is included, and whether a coating exists on a reflector is determined; and analyzing parameters of an image formed by the reflected light in the case where the presence of the plating film is determined, thereby further determining the shape and size of the reflector, thus excluding reflectors having no plating film and having a plating film but having a shape different from that of the lens, thereby determining that those reflected light are from the optical lens, and judging the type of the optical lens based on the determined shape, size and spectrum of the reflector.
Then in the case where it is determined that the optical lens is present, that is, in the case where the reflected light reflected by the optical lens is present, the reflected light may be subjected to imaging processing to form an image including the optical lens; in addition, in order to determine the position of the optical lens, the detection method of the embodiment of the invention may form a panoramic image of a current area (including a general place where image pickup and photographing are prohibited and a confidential area) in advance, and form coordinate information of the panoramic image; thus, the coordinate distance analysis can be performed on the image of the optical lens, and specifically, the specific position of the optical lens in the area can be determined according to the coordinate information of the panoramic image of the current area (namely, the photographing and video recording prevention place) formed in advance and the position information of the reflection detection light in the image containing the optical lens.
After the position of the optical lens in the area is determined, the optical lens can be subjected to interference shielding and destroying, and the specific mode is that interference light and/or destroying light is emitted to the optical lens according to the position of the optical lens in the area.
It can be seen from the above description that the optical lens detection method according to the embodiment of the present invention not only can realize accurate detection of the optical lens, but also can accurately determine the position of the optical lens and destroy or shield the optical lens to prevent common places where image pickup and photography are prohibited and confidential areas from being photographed or recorded, thereby realizing information security.
According to an embodiment of the present invention, there is also provided an optical lens detector.
As shown in fig. 3, the optical lens detector according to the embodiment of the present invention includes:
a light emitting device 31 for emitting detection light;
a detection lens 32 for receiving reflected light of the detection light;
and a processor 33 for analyzing the reflected light and determining whether the reflected light is reflected by the optical lens based on the analysis result.
In order to improve the detection accuracy and efficiency of the optical lens, the processor 33 according to an embodiment of the present invention may include: a first analyzing module (not shown) for analyzing the spectral characteristics of the reflected light to determine whether the reflector detecting the light is coated, thereby excluding the non-coated reflector; after determining that the reflector for detecting light has a coating, since the reflector for detecting light includes not only the lens but also the glasses, and other reflectors having a coating, such as glasses, are different from the lens in shape and size, the processor 33 according to an embodiment of the present invention may further include a second analyzing module (not shown) for analyzing parameters (such as shape and size) of an image formed by the reflected light when determining that the reflector for detecting light has a coating, so as to determine the shape and size of the reflector, so as to determine which reflectors for the reflected light are optical lenses, glasses lenses without a coating, other reflectors with a coating, and the like.
Accordingly, in one embodiment, the detection lens 32 includes a filter (not shown) for filtering the reflected light reflected by the non-coated reflector in the received reflected light, so as to improve the analysis efficiency of the reflected light, and thus the detection efficiency of the optical lens.
Optionally, in an embodiment, in order to determine an accurate position of the optical lens, the detection lens according to an embodiment of the present invention may further include: an imaging module (not shown) for performing imaging processing on the reflected light to form an image including the optical lens, in a case where the reflected light is determined to be reflected by the optical lens; and a determining module (not shown) for determining the position of the optical lens in the area according to the coordinate information of the panoramic image of the current area formed in advance and the position information of the reflected detection light in the image containing the optical lens.
In an alternative embodiment, in the case of using a filter in the detection lens 32, imaging is performed by the imaging module to obtain an image including an optical lens. At this time, since the filter filters the reflected light reflected by the non-coated reflector and a large amount of the detection light reflected by the coated optical lens passes through, the optical lens becomes very obvious (for example, a significant bright spot, and other objects except the lens and the background are dark) in the image obtained by imaging, so that a very accurate basis is provided for the detection of the optical lens, whether the optical lens exists can be accurately judged whether the image is identified by naked eyes or software, and after the reflected light of the lens is protruded, great convenience can be provided for the subsequent determination of the position of the lens, the workload is reduced, and the working efficiency is improved.
In order to avoid the optical lens from continuing to perform optics on the area where information security is required, in one embodiment, the detector according to an embodiment of the present invention may further include:
a disturbing light emitter (not shown) and a destroying light emitter (not shown) for emitting disturbing light (for preventing the lens from taking effective contents) and destroying light (for burning the imager of the optical lens) to the optical lens according to the position of the optical lens in the current area, respectively.
Alternatively, in one embodiment, the light emitting device 31 and the detection lens 32 according to an embodiment of the present invention are rotatably connected to the detector, so that the detection lens 32 can capture a panoramic image of the entire area while rotating;
and the determining module (not shown) may include a first determining sub-module (not shown) for determining position information of the image containing the optical lens in the panoramic image according to the pre-formed panoramic image of the current area and the corresponding coordinate information, and the coordinate information of the image containing the optical lens;
a second determining sub-module (not shown) for determining the position of the optical lens in the current area based on the position information of the image containing the optical lens in the panoramic image and the position information of the reflected detection light in the image containing the optical lens.
Therefore, the position of the optical lens in the area is accurately found, very accurate guide can be provided for subsequent emission of interference light or destruction light, and occurrence of candid photograph is effectively prevented.
Therefore, the optical lens detector of the embodiment of the invention adopts a lens positioning method, a lens identification and analysis system, an interference shielding and destroying technology, an optical detection technology and the like, can quickly find the optical lens, and can prevent and prevent the common places, the secret-related objects, the secret-related facilities and the secret-related parts which are forbidden to shoot and shoot from being shot and shot. Meanwhile, the digital camera can not shoot clear photos, record clear images and even destroy shooting equipment. The detector of the embodiment of the invention can be suitable for mobile use, and can also be fixed in a general place or a secret place where the camera shooting and the photography are forbidden to carry out 24-hour all-weather detection interference shielding.
In summary, according to the above technical solution of the present invention, the reflected light of the detection light is received and analyzed to detect whether there is an optical lens, so that the detection of the optical lens is more convenient and accurate, and after the optical lens is applied to the anti-theft area, the disclosure of the national secret, the commercial secret and the personal privacy caused by photographing and shooting can be prevented, and the inestimable economic loss and the loss of competitive advantage caused by the photographing and shooting leakage of the national secret project facilities can be avoided; and protect the trade secret from being stolen and revealed and keep the competitive advantage and make a profit; even protecting individual privacy from disclosure that impairs people's reputation. Therefore, the optical lens detection method and the optical lens detector have wide application range, can be applied to any area needing detection, thereby protecting various secrets (such as national secrets, military secrets, commercial secrets and personal secrets) from being leaked and keeping the advantages of the optical lens detection method and the optical lens detector.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. An optical lens inspection method, comprising:
emitting detection light;
receiving reflected light of the detection light, wherein the reflected light reflected by the non-coated reflector in the received reflected light is filtered by a filter;
analyzing the spectral characteristics of the reflected light to determine whether a film is coated on a reflector of the detection light;
under the condition that the reflector for detecting light is determined to have a coating, analyzing the parameters of an image formed by the reflected light, and determining the shape and the size of the reflector;
determining whether the reflected light is reflected by the optical lens based on the analysis result;
if the reflected light is determined to be reflected by the optical lens, performing imaging processing on the reflected light to form an image containing the optical lens;
determining the position of the optical lens in the current area according to a pre-formed panoramic image of the current area, corresponding coordinate information and position information of the optical lens in the image containing the detection light reflected by the optical lens;
emitting disturbing light and/or destroying light to the optical lens according to the position of the optical lens in the current area.
2. An optical lens detector, comprising:
a light emitting device for emitting detection light;
a detection lens for receiving the reflected light of the detection light;
a processor for analyzing the reflected light and determining whether the reflected light is reflected by the optical lens based on the analysis result;
the processor includes:
the first analysis module is used for analyzing the spectral characteristics of the reflected light and determining whether a film is coated on a reflector of the detection light or not;
the second analysis module is used for analyzing the parameters of the image formed by the reflected light under the condition that the detected light reflector is determined to have a coating film, and determining the shape and the size of the reflector;
the detection lens further includes:
the imaging module is used for imaging the reflected light to form an image containing the optical lens under the condition that the reflected light is determined to be reflected by the optical lens;
a determining module, configured to determine a position of the optical lens in the current area according to a pre-formed panoramic image of the current area, corresponding coordinate information, and position information of the optical lens in the image containing the detected light reflected by the optical lens;
the interference light emitter and the destroy light emitter are respectively used for emitting interference light and destroy light to the optical lens according to the position of the optical lens in the area;
the detection lens comprises a filter for filtering the reflected light reflected by the non-coated reflector in the received reflected light.
3. The optical lens detector according to claim 2, wherein the light emitting device and the detection lens are rotatably connected to the detector,
the determining module comprises a first determining submodule and a second determining submodule, wherein the first determining submodule is used for determining the position information of the image containing the optical lens in the panoramic image according to the pre-formed panoramic image of the current area, the corresponding coordinate information and the coordinate information of the image containing the optical lens;
a second determining sub-module, configured to determine a position of the optical lens in the image according to position information of an image containing the optical lens in the panoramic image and position information of the image containing the optical lens reflecting the detection light, so as to determine a position of the optical lens in the current area.
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| CN108595990A (en) * | 2018-03-30 | 2018-09-28 | 武志学 | Show equipment protection method, device, electronic equipment and readable storage medium storing program for executing |
| CN109271814A (en) * | 2018-10-09 | 2019-01-25 | 裕利年电子南通有限公司 | Anti- take pictures display system and anti-photographic method based on computer vision |
| CN111524089A (en) * | 2019-01-17 | 2020-08-11 | 苏州工业园区小步电子科技有限公司 | Pinhole camera detection method and device |
| CN110443016B (en) * | 2019-07-04 | 2023-10-10 | 深圳壹账通智能科技有限公司 | Information leakage prevention method, electronic device and storage medium |
| CN113223036B (en) * | 2020-01-21 | 2022-04-08 | 湖北讯甲科技有限公司 | Electronic equipment field positioning system |
| CN112525495B (en) * | 2020-11-25 | 2022-05-27 | 中国人民解放军陆军工程大学 | Active detection module design for resisting optical hidden observation |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7217913B2 (en) * | 2003-12-18 | 2007-05-15 | Micron Technology, Inc. | Method and system for wavelength-dependent imaging and detection using a hybrid filter |
| CN1228623C (en) * | 2003-12-19 | 2005-11-23 | 北京市普锐科创科技有限责任公司 | Optical detector of peep camera |
| CN101500486A (en) * | 2005-08-16 | 2009-08-05 | 皮肤癌症扫描有限公司 | Combined visual-optic and passive infra-red technologies and the corresponding system for detection and identification of skin cancer precursors, nevi and tumors for early diagnosis |
| CN101071261B (en) * | 2006-05-12 | 2010-05-26 | 鸿富锦精密工业（深圳）有限公司 | Method for detecting coated surface of IR-cut filter |
| JP2008015590A (en) * | 2006-07-03 | 2008-01-24 | Oki Electric Ind Co Ltd | Automatic transaction device monitoring system |
| JP5122590B2 (en) * | 2007-03-06 | 2013-01-16 | トムソン ライセンシング | Digital movie voyeurism prevention method and digital movie voyeurism prevention device based on post-sampling processing of image frame |
| EP2059039A1 (en) * | 2007-10-31 | 2009-05-13 | Thomson Licensing | Global anticamcorder projection system and method |
| JP2009229173A (en) * | 2008-03-21 | 2009-10-08 | Toppan Printing Co Ltd | Device and method for inspecting uncoated part of thin film coating |
| CN201583495U (en) * | 2010-01-19 | 2010-09-15 | 中国人民银行印制科学技术研究所 | Anti-counterfeit label identification system |
| RU2015121090A (en) * | 2012-12-04 | 2017-01-10 | Оптишелл Текнолоджиз Лтд. | DEVICE AND METHODS FOR DETECTING THE CAMERA |
| CN103501407A (en) * | 2013-09-16 | 2014-01-08 | 北京智谷睿拓技术服务有限公司 | Device and method for protecting privacy |
| CN104048612B (en) * | 2014-06-24 | 2017-02-01 | 江苏大学 | Method and device used for detecting thicknesses of coated films of lenses simultaneously in multi-point mode |
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