Camera detection method and device

Abstract

The present invention discloses a camera detection method and device, the method comprising: emitting a detection beam to a predetermined area, the detection beam containing at least one reference light; receiving a reflected beam after being reflected by the predetermined area, and obtaining the light intensity of the reference light in the reflected beam; calculating the light intensity difference between the detection beam and the reference light in the reflected beam, and when the light intensity difference meets a first preset condition, determining that the predetermined area is a suspicious area. The present invention emits a detection beam containing a reference light to a predetermined area, and obtains the light intensity of the reference light contained in the reflected beam reflected by the predetermined area, and based on the light intensity difference between the reflected beam and the reference light in the detection beam, the possibility of the existence of a camera in the predetermined area is judged, and the installation position of the camera can be locked quickly and accurately, which greatly improves the credibility and efficiency of the search and is conducive to protecting people's privacy.

Description

Technical Field

[0001] The present invention relates to the field of photoelectric detection technology, and in particular to a camera detection method and device. Background Art

[0002] As imaging technology matures, various camera devices emerge one after another, providing convenience for people's lives, but also easily causing the leakage of people's privacy. Nowadays, the abuse of hidden shooting devices such as pinhole cameras poses a great threat to people's privacy security. Because the installation location of such camera devices is quite hidden and the aperture is extremely small, it is usually difficult for the naked eye to detect such cameras. Even if you use the naked eye to search specifically, it is easy to miss due to the disguise, and it is hard to guard against.

[0003] Therefore, how to realize the detection of hidden cameras has become a problem that needs to be solved urgently. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a camera detection method and device, which can realize the detection of hidden cameras and solve the problem in the prior art that hidden camera equipment is difficult to be discovered by the naked eye.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A camera detection method, comprising:

[0007] emitting a detection beam to a predetermined area, wherein the detection beam includes at least one reference light;

[0008] receiving a reflected light beam reflected from the predetermined area, and acquiring the light intensity of the reference light beam in the reflected light beam;

[0009] The light intensity difference between the detection light beam and the reference light beam in the reflected light beam is calculated, and when the light intensity difference meets a first preset condition, the predetermined area is determined to be a suspicious area.

[0010] Optionally, the camera detection method further includes:

[0011] Obtaining a position in the suspicious area where the reference light is most weakened;

[0012] The position where the reference light is attenuated to the greatest extent is determined as the position of the camera.

[0013] Optionally, obtaining a position in the suspicious area where the reference light is most attenuated includes:

[0014] Dividing the suspicious area into a plurality of area units;

[0015] Calculating the light intensity difference between the detection light beam and the reference light beam in the reflected light beam in each of the area units;

[0016] Among all the area units, the position of the area unit corresponding to the light intensity difference with the smallest value is selected and determined as the position where the reference light is attenuated to the greatest extent.

[0017] Optionally, the detection light beam at least includes a reference light beam of infrared light type;

[0018] When the detection beam includes reference beams of two or more light types, the light intensity difference between the detection beam and the infrared light in the reflected beam is preferentially calculated.

[0019] Optionally, the camera detection method further includes:

[0020] Acquiring the temperature of the reference position and the predetermined area;

[0021] Calculating a temperature difference between the reference position and the predetermined area, and determining that a camera exists in the predetermined area when the light intensity difference satisfies a first preset condition and the temperature difference satisfies a second preset condition;

[0022] The reference position is any position outside the predetermined area; or,

[0023] The reference position is located in the surrounding area of ​​the predetermined area;

[0024] When the reference position is located in the surrounding area of ​​the predetermined area, acquiring the temperature of the reference position and the predetermined area includes:

[0025] Infrared temperature measurement is performed on the predetermined area and the surrounding area of ​​the predetermined area.

[0026] Optionally, the camera detection method further includes:

[0027] Obtaining the location with the highest temperature in the predetermined area;

[0028] The position with the highest temperature in the predetermined area is determined as the position of the camera.

[0029] The present invention also provides a camera detection device, comprising:

[0030] A beam emitting module, used for emitting a detection beam to a predetermined area, wherein the detection beam includes at least one reference beam;

[0031] A light sensing module, used for receiving a reflected light beam reflected from the predetermined area, and obtaining the light intensity of the reference light beam in the reflected light beam;

[0032] The analysis and processing module is used to calculate the light intensity difference between the detection light beam and the reference light beam in the reflected light beam, and when the light intensity difference meets a first preset condition, determine that the predetermined area is a suspicious area.

[0033] Optionally, in the camera detection device, the analysis and processing module is further used for:

[0034] Obtaining a position in the suspicious area where the reference light is most weakened;

[0035] Determine the position where the reference light is attenuated to the greatest extent as the position of the camera;

[0036] The obtaining of the position in the suspicious area where the reference light is most weakened includes:

[0037] Dividing the suspicious area into a plurality of area units;

[0038] Calculating the light intensity difference between the detection light beam and the reference light beam in the reflected light beam in each of the area units;

[0039] Among all the area units, the position of the area unit corresponding to the light intensity difference with the smallest value is selected and determined as the position where the reference light is attenuated to the greatest extent.

[0040] Optionally, the detection light beam at least includes a reference light beam of infrared light type;

[0041] When the detection beam includes reference beams of two or more light types, the light intensity difference between the detection beam and the infrared light in the reflected beam is preferentially calculated.

[0042] Optionally, the camera detection device further includes:

[0043] A temperature acquisition module, used to acquire the temperature of the reference position and the predetermined area;

[0044] The analysis and processing module is further used to: calculate the temperature difference between the reference position and the predetermined area, and when the light intensity difference meets a first preset condition and the temperature difference meets a second preset condition, determine that there is a camera in the predetermined area;

[0045] The reference position is any position outside the predetermined area, or,

[0046] The reference position is located in the surrounding area of ​​the predetermined area;

[0047] The temperature acquisition module includes an infrared thermometer;

[0048] The temperature acquisition module is used to perform infrared temperature measurement on the predetermined area and the surrounding area of ​​the predetermined area, and to obtain the position with the highest temperature in the predetermined area;

[0049] The analysis and processing module is also used to determine the position with the highest temperature as the position of the camera.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] The present invention provides a camera detection method and device, which emits a detection beam containing reference light to a predetermined area, and obtains the light intensity of the reference light contained in a reflected beam reflected by the predetermined area. Based on the light intensity difference between the reflected beam and the reference light in the detection beam, the possibility of the existence of a camera in the predetermined area is judged. The installation position of the camera can be locked quickly and accurately, which is conducive to locking the camera installation position, thereby greatly improving the credibility and efficiency of the search and being conducive to protecting people's privacy. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0053] Figure 1 A flowchart of a camera detection method provided by the present invention;

[0054] Figure 2 A schematic diagram of the principle of obtaining the intensity of reference light in a camera detection method provided by the present invention;

[0055] Figure 3 Another flowchart of a camera detection method provided by the present invention;

[0056] Figure 4 A flowchart of step S14 in a camera detection method provided by the present invention;

[0057] Figure 5 Another flowchart of a camera detection method provided by the present invention;

[0058] Figure 6 A schematic diagram of the principle of obtaining the temperature of a predetermined area in a camera detection method provided by the present invention;

[0059] Figure 7Another schematic diagram of the principle of obtaining the temperature of a predetermined area by a camera detection method provided by the present invention;

[0060] Figure 8 Another flowchart of a camera detection method provided by the present invention;

[0061] Fig. 9 A structural block diagram of a camera detection device provided by the present invention.

[0062] In the above figure: 10, light beam emitting module; 20, light sensing module; 30, analysis and processing module; 40, temperature acquisition module; 411, lens system; 412, photoelectric detector; 413, signal amplification processor; 414, output unit. DETAILED DESCRIPTION

[0063] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0064] Nowadays, we often hear in the news about cases where hidden cameras are used to spy on personal privacy. Small cameras are usually difficult to detect after being deliberately disguised and hidden. Even if they are searched for with the naked eye, they are easily missed due to the lack of targeted guidance from special detection instruments.

[0065] The present invention aims to provide a camera detection solution to provide targeted guidance during the process of searching for cameras.

[0066] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0067] Please refer to Figure 1 and Figure 2 , an embodiment of the present invention provides a camera detection method, comprising:

[0068] S11. Emit a detection light beam L1 to a predetermined area.

[0069] The detection light beam L1 includes at least one reference light beam.

[0070] S12, receiving the reflected light beam L2 after being reflected from the predetermined area, and obtaining the light intensity of the reference light in the reflected light beam L2.

[0071] S13, calculating the light intensity difference between the detection light beam L1 and the reference light beam in the reflected light beam L2, and when the light intensity difference meets a first preset condition, determining that the predetermined area is a suspicious area.

[0072] Specifically, the light intensity difference satisfies the first preset condition when: the light intensity difference exceeds a set light intensity threshold.

[0073] The camera module generally includes components such as lens, motor, filter, photosensitive chip, FPC and capacitor. The lens is used to collect as much light as possible and enter the lens module through the light hole; the camera contains a filter, which filters out specific types of light to achieve a certain photographic effect. In this embodiment, by emitting a detection beam L1 containing at least one reference light, and then measuring the light intensity of the reference light contained in the reflected beam L2 reflected from the predetermined area, if the light intensity of the reference light in the reflected beam L2 is significantly weakened compared to the light intensity of the reference light in the detection beam L1, it means that there may be a camera in the predetermined area, and the predetermined area is determined to be a suspicious area.

[0074] In the prior art, cameras often include infrared filters, which filter out infrared light that is invisible to the human eye, so that the light obtained by the photosensitive chip is closer to the visible light that the human eye can see; based on this, in the present invention, the detection beam L1 at least includes a reference beam of infrared light, and in addition, may also include reference beams of ultraviolet light and other types. When the detection beam L1 includes reference beams of two or more types of light, the light intensity difference of the infrared light in the detection beam L1 and the reflected beam L2 is calculated first.

[0075] Specifically, the present invention emits laser infrared light of a certain diameter to illuminate a predetermined area through the beam emitting module 10, and then receives the reflected light beam L2 through the light sensing module 20, and detects the degree of attenuation of the infrared light to find possible cameras.

[0076] Please refer to Figure 3 and Figure 4 Furthermore, the camera detection method provided in this embodiment further includes:

[0077] S14, obtaining a position in the suspicious area where the reference light is most weakened;

[0078] S15. Determine the position where the reference light is most attenuated as the position of the camera.

[0079] Wherein, in step S14, obtaining the position in the suspicious area where the reference light is attenuated to the greatest extent includes:

[0080] S141, dividing the suspicious area into a plurality of area units;

[0081] S142, calculating the light intensity difference between the detection light beam L1 and the reference light beam in the reflected light beam L2 in each area unit;

[0082] S143. Among all the area units, the position of the area unit corresponding to the light intensity difference with the smallest value is selected, and determined as the position where the reference light is attenuated to the greatest extent.

[0083] Based on steps S14 to S15, the camera installation position is determined by determining the position where the infrared light is attenuated to the greatest extent.

[0084] Considering that the camera module generates heat when working, in this embodiment, by measuring the temperature in a predetermined area, it is possible to further determine whether there is a camera in the area.

[0085] Please refer to Figure 5 Furthermore, in this embodiment, the camera detection method also includes:

[0086] S21, obtaining the temperature of the reference position and the predetermined area;

[0087] S22, calculating the temperature difference between the reference position and the predetermined area, and when the light intensity difference meets the first preset condition and the temperature difference meets the second preset condition, determining that there is a camera in the predetermined area.

[0088] Specifically, the aforementioned temperature difference meets the second preset condition, specifically: the temperature difference exceeds a set temperature threshold.

[0089] It can be understood that steps S11 to S13 and steps S21 to S22 can be performed simultaneously or sequentially. In this embodiment, steps S11 to S13 are mainly performed and steps S21 to S22 are supplementary to detect possible cameras in the space.

[0090] Specifically, when the predetermined area is determined as a suspicious area in step S13, steps S21 to S22 are executed to further eliminate other factors that may affect the light intensity and determine whether there is a camera in the predetermined area.

[0091] Please refer to Figure 6 , Figure 7 In step S21, the temperature of the reference position B and the predetermined area A is first obtained; it can be understood that the reference position B is any position outside the predetermined area, such as the current environment, or the reference position B is the surrounding area of ​​the predetermined area A. The temperature of the reference position B is used as a reference value to determine whether there is a significant difference in the temperature of the predetermined area A, thereby checking whether there is a camera in the area.

[0092] It is understandable that all objects with temperatures above absolute zero are constantly emitting infrared radiation energy into the surrounding space. Therefore, by measuring the infrared energy radiated by the object itself, its surface temperature can be accurately determined. This is the theoretical basis of infrared radiation temperature measurement.

[0093] Based on this, in step S21, obtaining the temperature of the reference position and the predetermined area includes:

[0094] Infrared temperature measurement is performed on the predetermined area and the surrounding area of ​​the predetermined area.

[0095] Specifically, the temperature is acquired based on an infrared thermometer, which includes a lens system 411, a photodetector 412, and a signal amplification processor 413. The infrared radiation energy in the target area (predetermined area) in the field of view is gathered by the lens system 411, and the photodetector 412 realizes photoelectric conversion. After the signal amplification processor 413 performs signal amplification and filtering, the signal is output by the output unit 414 to acquire the temperature value in the target area. By infrared temperature measurement, non-contact temperature measurement can be performed on objects within a certain area, and locations that are difficult to touch can be checked.

[0096] Please refer to Figure 8 , this embodiment also includes the following steps:

[0097] S23, obtaining the position with the highest temperature in the predetermined area;

[0098] S24. Determine the position with the highest temperature as the position of the camera.

[0099] Infrared temperature measurement is used to measure the temperature of a predetermined area and obtain the location with the highest temperature, thereby determining the camera installation location and achieving accurate camera search.

[0100] Please refer to Fig. 9 , and again combined with reference Figure 2 , Figure 6 and Figure 7 Based on the above embodiments, an embodiment of the present invention further provides a camera detection device, including a light beam emitting module 10, a light sensing module 20 and an analysis and processing module 30.

[0101] The light beam emitting module 10 is used to emit a detection light beam L1 to a predetermined area, and the detection light beam L1 includes at least one reference light. Since the camera often includes an infrared filter, the infrared filter filters out infrared light that is invisible to the human eye, so that the light obtained by the photosensitive chip is closer to the visible light that can be seen by the human eye. Therefore, in this embodiment, the temperature acquisition module 40 includes an infrared thermometer.

[0102] The light sensing module 20 is used to receive the reflected light beam L2 after being reflected from the predetermined area, and obtain the light intensity of the reference light in the reflected light beam L2; in this embodiment, the light sensing module 20 includes an infrared sensing chip, and the infrared sensing chip is used to measure the light intensity of the infrared light in the received light to obtain the light intensity of the infrared reference light in the reflected light beam L2. It can be understood that when the detection light beam L1 contains a reference light of a type such as ultraviolet light, a corresponding light sensing chip is set to achieve the detection and acquisition of the intensity of this type of light.

[0103] The analysis and processing module 30 is used to calculate the light intensity difference between the detection light beam L1 and the reference light beam in the reflected light beam L2, and when the light intensity difference meets a first preset condition, determine that the predetermined area is a suspicious area where a camera may exist.

[0104] Specifically, the light intensity difference satisfies the first preset condition when the light intensity difference exceeds the set light intensity threshold. When the light intensity of the reference light in the reflected light beam L2 is significantly weakened, it indicates that there may be a camera in the predetermined area, and the predetermined area is determined to be a suspicious area.

[0105] In this embodiment, based on the light intensity difference, the ratio of the light intensity difference to the reference light intensity in the detection beam L1 is calculated, and the ratio represents the degree of weakening of the intensity of the reference light in the detection beam L1; when the intensity of the reference light in the reflected beam L2 is weakened by more than 85% relative to the intensity of the reference light in the detection beam L1, the light intensity difference exceeds the set light intensity threshold, and the predetermined area is determined to be a suspicious area.

[0106] Furthermore, the camera detection device also includes a temperature acquisition module 40, and the temperature acquisition module 40 is used to acquire the temperature of the reference position and the predetermined area.

[0107] Specifically, the reference position is any position outside the predetermined area, such as the temperature in the current environment, or the reference position is located in the surrounding area of ​​the predetermined area. The temperature of the reference position is used as a reference value to determine whether there is a significant difference in the temperature of the predetermined area.

[0108] The analysis and processing module 30 is further used to calculate the temperature difference between the reference position and the predetermined area. When the light intensity difference satisfies a first preset condition and the temperature difference satisfies a second preset condition, it is determined that there is a camera in the predetermined area.

[0109] Specifically, the temperature difference satisfies the second preset condition when: the temperature difference exceeds a set temperature threshold.

[0110] In this embodiment, the temperature acquisition module 40 includes an infrared thermometer, which includes a lens system 411, a photoelectric detector 412, and a signal amplification processor 413. The infrared radiation energy in the target area (predetermined area) in the field of view is gathered by the lens system 411, and photoelectric conversion is performed in the photoelectric detector 412. After the signal amplification and filtering by the signal amplification processor 413, the signal is output by the output unit 414 to obtain the temperature value in the target area. Infrared temperature measurement can be used to measure the temperature of objects within a certain area without contact, which is conducive to checking locations that are difficult to touch.

[0111] Furthermore, the temperature acquisition module 40 is used to perform infrared temperature measurement on the predetermined area and the surrounding area of ​​the predetermined area, and to obtain the position with the highest temperature in the predetermined area; the analysis and processing module 30 is also used to: determine the position with the highest temperature as the position of the camera.

[0112] Infrared temperature measurement is used to measure the temperature of a predetermined area and obtain the location with the highest temperature, thereby determining the camera installation location and enabling accurate camera search.

[0113] Based on the aforementioned embodiments, the present invention compares the light intensity of the reference light before and after reflection in a predetermined area, and compares the temperature in the predetermined area with the reference temperature. Based on these two dimensions, it can detect whether a camera exists, provide guidance for the inspection of hidden cameras, and can quickly and accurately lock the installation location of the camera, greatly improving the credibility and efficiency of the search, which is beneficial to protecting people's privacy.

[0114] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A camera detection method, It is characterized in that include: emitting a detection beam to a predetermined area, wherein the detection beam includes at least one reference light; receiving a reflected light beam reflected from the predetermined area, and acquiring the light intensity of the reference light beam in the reflected light beam; Calculating a light intensity difference between the detection light beam and the reference light beam in the reflected light beam, and determining that the predetermined area is a suspicious area when the light intensity difference meets a first preset condition; Obtaining a position in the suspicious area where the reference light is most weakened; Determine the position where the reference light is attenuated to the greatest extent as the position of the camera; The obtaining of the position in the suspicious area where the reference light is most weakened includes: Dividing the suspicious area into a plurality of area units; Calculating the light intensity difference between the detection light beam and the reference light beam in the reflected light beam in each of the area units; Among all the area units, the position of the area unit corresponding to the light intensity difference with the smallest value is selected and determined as the position where the reference light is attenuated to the greatest extent.

2. The camera detection method according to claim 1, It is characterized in that The detection light beam at least includes a reference light beam of infrared light; When the detection beam includes reference beams of two or more light types, the light intensity difference between the detection beam and the infrared light in the reflected beam is preferentially calculated.

3. The camera detection method according to claim 1, It is characterized in that Also includes: Acquiring the temperature of the reference position and the predetermined area; Calculating a temperature difference between the reference position and the predetermined area, and determining that a camera exists in the predetermined area when the light intensity difference satisfies a first preset condition and the temperature difference satisfies a second preset condition; The reference position is any position outside the predetermined area; or, The reference position is located in the surrounding area of ​​the predetermined area; When the reference position is located in the surrounding area of ​​the predetermined area, acquiring the temperature of the reference position and the predetermined area includes: Infrared temperature measurement is performed on the predetermined area and the surrounding area of ​​the predetermined area.

4. The camera detection method according to claim 3, It is characterized in that Also includes: Obtaining the location with the highest temperature in the predetermined area; The position with the highest temperature in the predetermined area is determined as the position of the camera.

5. A camera detection device, It is characterized in that include: A beam emitting module, used for emitting a detection beam to a predetermined area, wherein the detection beam includes at least one reference beam; A light sensing module, used for receiving a reflected light beam reflected from the predetermined area, and obtaining the light intensity of the reference light beam in the reflected light beam; The analysis and processing module is used to calculate the light intensity difference between the detection light beam and the reference light beam in the reflected light beam, and when the light intensity difference meets a first preset condition, determine that the predetermined area is a suspicious area.

6. The camera detection device according to claim 5, It is characterized in that The analysis and processing module is also used for: Obtaining a position in the suspicious area where the reference light is most weakened; Determine the position where the reference light is attenuated to the greatest extent as the position of the camera; The obtaining of the position in the suspicious area where the reference light is most weakened includes: Dividing the suspicious area into a plurality of area units; Calculating the light intensity difference between the detection light beam and the reference light beam in the reflected light beam in each of the area units; Among all the area units, the position of the area unit corresponding to the light intensity difference with the smallest value is selected and determined as the position where the reference light is attenuated to the greatest extent.

7. The camera detection device according to claim 5, It is characterized in that The detection light beam at least includes a reference light beam of infrared light; When the detection beam includes reference beams of two or more light types, the light intensity difference between the detection beam and the infrared light in the reflected beam is preferentially calculated.

8. The camera detection device according to claim 5, It is characterized in that Also includes: A temperature acquisition module, used to acquire the temperature of the reference position and the predetermined area; The analysis and processing module is further used to: calculate the temperature difference between the reference position and the predetermined area, and when the light intensity difference meets a first preset condition and the temperature difference meets a second preset condition, determine that there is a camera in the predetermined area; The reference position is any position outside the predetermined area, or, The reference position is located in the surrounding area of ​​the predetermined area; The temperature acquisition module includes an infrared thermometer; The temperature acquisition module is used to perform infrared temperature measurement on the predetermined area and the surrounding area of ​​the predetermined area, and to obtain the position with the highest temperature in the predetermined area; The analysis and processing module is also used to determine the position with the highest temperature as the position of the camera.

Images