CN108900754A - It is a kind of for eliminating the reflective photographic device of glasses mirror surface and its control method - Google Patents
It is a kind of for eliminating the reflective photographic device of glasses mirror surface and its control method Download PDFInfo
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- 239000011521 glass Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000010287 polarization Effects 0.000 claims abstract description 153
- 230000003287 optical effect Effects 0.000 claims abstract description 56
- 238000012545 processing Methods 0.000 claims abstract description 36
- 230000004927 fusion Effects 0.000 claims abstract description 29
- 230000001360 synchronised effect Effects 0.000 claims abstract description 23
- 230000001174 ascending effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 15
- 230000006399 behavior Effects 0.000 description 7
- 230000008030 elimination Effects 0.000 description 7
- 238000003379 elimination reaction Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
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- 230000009286 beneficial effect Effects 0.000 description 3
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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
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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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
- H04N23/80—Camera processing pipelines; Components thereof
- H04N23/81—Camera processing pipelines; Components thereof for suppressing or minimising disturbance in the image signal generation
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Abstract
The present invention provides a kind of for eliminating the reflective photographic device of glasses mirror surface and its control method, device includes polarization optical element, rotation control unit, synchronous control unit, camera unit and image processing unit, camera unit is arranged on the emitting light path of polarization optical element, the polarization image in emergent ray irradiation area for acquiring polarization optical element, and it is sent to image processing unit, synchronous control unit, which is used to control polarization optical element by rotation control unit, to be rotated according to preset rotation speed to multiple angles, and synchronously control image processing unit receives the polarization image under different angles, image processing unit is for being filtered fusion to polarization image, it generates and eliminates the reflective image of glasses mirror surface;The mirror surface that the device can effectively eliminate vehicle driver's glasses is reflective, improves the clarity of image.
Description
Technical field
The present invention relates to technical field of automotive electronics more particularly to a kind of for eliminating the reflective photographic device of glasses mirror surface
And its control method.
Background technique
With the development of vehicle technology, especially unmanned, auxiliary driving technology rise, various sensings are set on vehicle
It is standby to be continuously increased, to monitor driver and each system running state of vehicle.Wherein, image sensing apparatus (picture pick-up device) is with its valence
The advantage that lattice are cheap, are easily installed, vehicle-mounted gesture identification, fatigue driving detection, in terms of obtained it is big
Amount application.
When driver, which wears glasses, to be driven, due to the photograph of the environment light sources such as sunlight, street lamp, car light or monitoring light compensating lamp
It penetrates, in glasses mirror surface can cause mirror-reflection, generate strong reflective, i.e. bloom part, and form hot spot, lead to image sensing
The image of equipment acquisition is unclear in the corresponding area image that mirror-reflection occurs, and image quality is influenced, after increasing image
The difficulty of reason, and then the detection accuracy such as vehicle-mounted gesture identification, fatigue driving detection, driver behavior modeling is caused to decline.
, can be by the diffusing reflection and scattering phenomenon of light from hardware point of view in order to eliminate bloom caused by mirror-reflection, it will
Light that light source is issued from fixed-direction, with highly directive is broken up, and makes its uniform irradiation in mirror surface, to eliminate mirror surface
It is reflective, but this method is not suitable for the mobile scene of light source;From algorithm angle, bloom elimination can be carried out to image by algorithm
Or dodging, but this method is only effective to the special scenes of algorithm setting, and it is more to the complexity encountered in vehicle travel process
The reflective removal effect of the mirror surface of changing environment light is unsatisfactory.
Summary of the invention
It is an object of the invention to the not high, effects for applicability existing for the above-mentioned reflective scheme of mirror surface of elimination in the prior art
The undesirable problem of fruit, proposes a kind of for eliminating the reflective photographic device of glasses mirror surface and its control method, and applicability is high, and
Imaging clearly.
It is a kind of for eliminating the reflective photographic device of glasses mirror surface, including polarization optical element, rotation control unit, synchronization
Control unit, camera unit and image processing unit;
The camera unit is arranged on the emitting light path of the polarization optical element, for acquiring the polarization optics member
Polarization image in the emergent ray irradiation area of part, and it is sent to described image processing unit;
The synchronous control unit is used to control the polarization optical element according to default by the rotation control unit
Revolving speed is rotated to multiple angles, and synchronously control described image processing unit receives the polarization image under different angles;
Described image processing unit is used to be filtered the polarization image fusion, and it is reflective to generate elimination glasses mirror surface
Image.
Further, the polarization optical element is polariscope;
The rotation control unit includes rotary unit and control unit, and described control unit is for receiving the synchronous control
The rotation information that unit processed is sent, and rotation control signal is generated according to the rotation information, the rotary unit is used for basis
The rotation control signal controls the polarization optical element and rotates according to preset rotation speed to multiple angles.
Further, described image processing unit includes image processor and memory module;
The memory module is for storing the polarization image under the different angle;
Described image processor is used to read the polarization image from the memory module and carry out to the polarization image
Filtering fusion generates and eliminates the reflective image of glasses mirror surface.
Further, the camera unit is CCD camera or CMOS camera.
It is a kind of for eliminating the control method of the reflective photographic device of glasses mirror surface, applied to above-mentioned photographic device, institute
The method of stating includes:
Synchronous control unit controls polarization optical element by rotation control unit and rotates according to preset rotation speed to multiple angles
Degree;
Camera unit acquires the polarization image in the emergent ray irradiation area of polarization optical element;
Synchronous control unit synchronously control image processing unit receives the polarization image under different angles;
Image processing unit is filtered fusion to the polarization image, generates and eliminates the reflective image of glasses mirror surface.
Further, the rotation control unit includes rotary unit and control unit;
Described control unit receives the rotation information that the synchronous control unit is sent, and is generated according to the rotation information
Rotation control signal;
The rotary unit controls the polarization optical element according to the rotation control signal and rotates according to preset rotation speed
To multiple angles.
Further, described image processing unit includes image processor and memory module;
The method also includes:
The polarization image that memory module receives under different angles is stored;
Image processor reads the polarization image from the memory module and is filtered fusion to the polarization image,
It generates and eliminates the reflective image of glasses mirror surface.
Further, the preset rotation speed is greater than or equal to 1rps;
The quantity that described image processing unit receives the polarization image is n, wherein n >=24 frames/second;
Described image processing unit is received such as the deflection image under lower angle:0 °, 360 × 1/n, 360 × 2/n ... ...,
360 × (n-1)/n, 360 °.
Further, image processing unit is filtered fusion to the polarization image, and it is reflective to generate elimination glasses mirror surface
Image, including:
The clarity of each frame polarization image is calculated, and the polarization image is arranged according to clarity ascending order;
The brightness of each frame polarization image is calculated, and the polarization image is arranged according to brightness ascending order;
It removes clarity and arranges preceding 10% polarization image and the polarization image of brightness arrangement preceding 10%;
Remaining polarization image is subjected to fusion superposition, generates and eliminates the reflective image of glasses mirror surface.
Further, the fusion of the polarization image is superimposed in the following way:
I=(ω1·I1+ω2·I2+...ωn-1·I(n-1)+ωn·In)/n;
Wherein, I1、I2、...、InFor image to be fused, n is amount of images, ω1、ω2、...、ωnFor fusion coefficients, and
ω1+ω2+...+ωn=1, I are to eliminate the reflective image of glasses mirror surface.
Provided by the present invention for eliminating the reflective photographic device and its control method of glasses mirror surface, including at least having as follows
Beneficial effect:
(1) polarization image that different polarization angle is obtained by rotatory polarization optical element, by multiframe polarization image
Filtering fusion, generates the image for eliminating polarised light, the mirror surface that can effectively eliminate vehicle driver's glasses is reflective, improves image
Clarity, and it is suitable for light source movement and environment light scene complicated and changeable, strong applicability;
It (2) is that vehicle-mounted gesture identification, fatigue driving detection, driving behavior detection etc. provide the image being more clear,
Guarantee the reliability of vehicle-mounted gesture identification, fatigue driving detection, driving behavior detection.
Detailed description of the invention
Fig. 1 is provided by the present invention for eliminating a kind of reflective structural schematic diagram of embodiment of photographic device of glasses mirror surface.
Fig. 2 is the structural representation provided by the present invention for eliminating the reflective photographic device another kind embodiment of glasses mirror surface
Figure.
Fig. 3 is provided by the present invention for eliminating a kind of reflective schematic diagram of application scenarios of photographic device of glasses mirror surface.
Fig. 4 is former provided by the present invention for eliminating the work of polarization optical element in the reflective photographic device of glasses mirror surface
Manage schematic diagram.
Fig. 5 is the deflection angle provided by the present invention for eliminating polarization optical element in the reflective photographic device of glasses mirror surface
Spend schematic diagram.
Fig. 6 is a kind of embodiment of control method provided by the present invention for eliminating the reflective photographic device of glasses mirror surface
Flow chart.
Specific embodiment
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to
Limit the present invention.
Embodiment one
With reference to Fig. 1, the present embodiment provides a kind of for eliminating the reflective photographic device of glasses mirror surface, including polarization optics member
Part 101, rotation control unit 102, synchronous control unit 103, camera unit 104 and image processing unit 105;
Camera unit 104 is arranged on the emitting light path of polarization optical element 101, for acquiring polarization optical element 101
Emergent ray irradiation area in polarization image, and be sent to image processing unit 105;
Synchronous control unit 103 is used to control polarization optical element 101 according to preset rotation speed by rotation control unit 102
It rotates to multiple angles, and synchronously control image processing unit 105 receives the polarization image under different angles;
Image processing unit 105 is used to be filtered polarization image fusion, generates and eliminates the reflective image of glasses mirror surface.
As a preferred embodiment, polarization optical element 101 is polariscope.
As a preferred embodiment, rotation control unit 102 includes rotary unit 1021 and control with reference to Fig. 2
Unit 1022, control unit 1022 are used to receive the rotation information of the transmission of synchronous control unit 103, and are generated according to rotation information
Rotation control signal, rotary unit 1021 are used to control polarization optical element 101 according to preset rotation speed according to rotation control signal
It rotates to multiple angles.
Synchronous control unit 103 is controller.
Rotary unit 1021 can be the device for being capable of providing torque, such as motor, and control unit 1022 is controller, rotation
Turn unit 1021 and polarization optical element 101 is cooperatively connected, polarization optical element 101 can rotate on optical axis.
The incident light of polarization optical element 101 is environment light, anti-including the non-polarized light reflected without glasses and through glasses
Penetrate the polarised light with certain polarization angle to be formed.
With reference to Fig. 3, glasses mirror surface is non-metallic specular, and light source forms reflective spot, and glasses mirror-reflection in glasses mirror surface
Light be polarised light the polarization of certain angle therefore can be filtered by adjusting the polarization angle of polarization optical element 101
Light so as to improve the image quality of subject, and improves the clarity of picture.
With reference to Fig. 4, the working principle of polarization optical element 101 is as shown in figure 4, polarization optical element 101 only allows to have
The light of single polarization angle passes through, and the light of other polarization angles is filtered out, polarization optical element 101 can by light intensity
Meet Malus' law, as shown in following formula:
Iout=Iin cos2θ;
Wherein, IoutFor the intensity of the emergent light of polarization optical element 101, IinFor the incident light of polarization optical element 101
Intensity, angle of the θ between polarization optical element 101 and incident light.
With reference to Fig. 4, for the polarization optical element 101 of either polarization angle, natural light can be passed through with some, and
The polarised light of a certain fixed angle polarization, it is complete when the polarization direction of light is identical as the polarization direction of polarization optical element 101
Full by when vertical, being filtered out, when between perpendicular between parallel, partially pass through completely.In conjunction with Fig. 3, polarization optical element
101 are in rotation status, and the polarization angle of the polarization optical element 101 of different rotary angle is different, and optical filtering degree is also different,
Therefore clarity, brightness of image of different polarization angle etc. are all different.
It is polarization angle signal of the polarization optical element under 0 °, 15 °, 30 °, 45 °, 60 °, 75 °, 90 ° with reference to Fig. 5, Fig. 5
Figure.
Therefore, by rotatory polarization optical element 101, the figure of several different polarization angles of same image can be acquired
Picture.
As a preferred embodiment, camera unit 104 is CCD camera or CMOS camera.
Further, with reference to Fig. 2, image processing unit 105 includes image processor 1051 and memory module 1052;
Memory module 1052 is used to store the polarization image under different angles, and image processor 1051 is used to scheme polarization
As being filtered fusion, generates and eliminate the reflective image of glasses mirror surface.
Synchronous control unit 103 sends rotation information, which includes the preset rotation speed and angle information of rotation, control
Unit 1022 processed receives the rotation information, and generates rotation control signal according to the rotation information and be sent to rotary unit
1021, rotary unit 1021 controls polarization optical element 101 according to the rotation control signal and rotates according to preset rotation speed to multiple
Angle, meanwhile, synchronous control unit 103 sends Image Acquisition and controls signal to image processor 1051, image processor 1051
Signal control camera unit 104 is controlled according to the Image Acquisition to acquire in the emergent ray irradiation area of polarization optical element 101
Different angle under polarization image and be sent to memory module 1052 and stored, image processor 1051 reads the difference angle
The lower polarization image of degree is simultaneously filtered fusion, the reflective image of generation elimination glasses mirror surface.
It is provided in this embodiment to be used to eliminate the reflective photographic device of glasses mirror surface, include at least following beneficial effect:
(1) polarization image that different polarization angle is obtained by rotatory polarization optical element, by multiframe polarization image
Filtering fusion, generates the image for eliminating polarised light, the mirror surface that can effectively eliminate vehicle driver's glasses is reflective, improves image
Clarity, and it is suitable for light source movement and environment light scene complicated and changeable, strong applicability;
It (2) is that vehicle-mounted gesture identification, fatigue driving detection, driving behavior detection etc. provide the image being more clear,
Guarantee the reliability of vehicle-mounted gesture identification, fatigue driving detection, driving behavior detection.
Embodiment two
With reference to Fig. 1, Fig. 2 and Fig. 6, the present embodiment provides a kind of for eliminating the control of the reflective photographic device of glasses mirror surface
Method, the method includes:
Step S201, synchronous control unit 103 control polarization optical element 101 according to pre- by rotation control unit 102
If revolving speed is rotated to multiple angles;
Step S202, camera unit 104 acquire the polarization image in the emergent ray irradiation area of polarization optical element;
Step S203,103 synchronously control image processing unit 105 of synchronous control unit receive the polarization under different angles
Image;
Step S204, image processing unit 105 are filtered fusion to the polarization image, and it is anti-to generate elimination glasses mirror surface
The image of light.
The structure and working principle reference implementation example one of photographic device, details are not described herein.
Further, rotation control unit 102 includes rotary unit 1021 and control unit 1022;
Control unit 1022 receives the rotation information that synchronous control unit 103 is sent, and is generated and rotated according to rotation information
Control signal;
Rotary unit 1021 controls polarization optical element 101 according to rotation control signal and rotates according to preset rotation speed to multiple
Angle.
The rotation information includes the preset rotation speed and angle information of rotation.
Image processing unit 105 includes image processor 1051 and memory module 1052.
Meanwhile synchronous control unit 103 sends Image Acquisition and controls signal to image processor 1051, image processor
1051 control the emergent ray irradiated region that signal control camera unit 104 acquires polarization optical element 101 according to the Image Acquisition
The polarization image under different angle in domain is simultaneously sent to memory module 1052 and is stored.
Image processor 1051 reads the polarization image from memory module 1052 and is filtered to the polarization image
Fusion generates and eliminates the reflective image of glasses mirror surface.
In view of the corresponding relationship of revolving speed and frame per second, it is (per second that the preset rotation speed of polarization optical element 101 is more than or equal to 1rps
1 week);Also, synchronous control unit 103 controls image processing unit and synchronizes that receive and store multiple and different polarization angles corresponding
Several polarization images, wherein polarization image quantity n >=24 frames/second of acquisition and storage, i.e., image processing unit 105 is in polarised light
Learn element angle be 0 °, 360*1/n, 360*2/n ..., 360* (n-1)/n, 360 position receive polarization image.
Polarization optical element 101 is in rotation status, and the polarization angle of the polariscope of different rotary angle is different, filters
Degree is also different, therefore all difference such as the clarity of the image of different polarization angle, brightness
Further, image processing unit 105 is filtered fusion to the polarization image, and it is anti-to generate elimination glasses mirror surface
The image of light, including:
The clarity of each frame polarization image is calculated, and the polarization image is arranged according to clarity ascending order;
The brightness of each frame polarization image is calculated, and the polarization image is arranged according to brightness ascending order;
It removes clarity and arranges preceding 10% polarization image and the polarization image of brightness arrangement preceding 10%;
Remaining polarization image is subjected to fusion superposition, generates and eliminates the reflective image of glasses mirror surface.
Further, the fusion of the polarization image is superimposed in the following way:
I=(ω1·I1+ω2·I2+...ωn-1·I(n-1)+ωn·In)/n;
Wherein, I1、I2、...、InFor image to be fused, n is amount of images, ω1、ω2、...、ωnFor fusion coefficients, and
ω1+ω2+...+ωn=1, I are to eliminate the reflective image of glasses mirror surface.
It is provided in this embodiment for eliminating the control method of the reflective photographic device of glasses mirror surface, including at least having as follows
Beneficial effect:
(1) polarization image that different polarization angle is obtained by rotatory polarization optical element, by multiframe polarization image
Filtering fusion, generates the image for eliminating polarised light, the mirror surface that can effectively eliminate vehicle driver's glasses is reflective, improves image
Clarity, and it is suitable for light source movement and environment light scene complicated and changeable, strong applicability;
It (2) is that vehicle-mounted gesture identification, fatigue driving detection, driving behavior detection etc. provide the image being more clear,
Guarantee the reliability of vehicle-mounted gesture identification, fatigue driving detection, driving behavior detection.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of for eliminating the reflective photographic device of glasses mirror surface, which is characterized in that including polarization optical element, rotation control
Unit, synchronous control unit, camera unit and image processing unit;
The camera unit is arranged on the emitting light path of the polarization optical element, for acquiring the polarization optical element
Polarization image in emergent ray irradiation area, and it is sent to described image processing unit;
The synchronous control unit is used to control the polarization optical element according to preset rotation speed by the rotation control unit
It rotates to multiple angles, and synchronously control described image processing unit receives the polarization image under different angles;
Described image processing unit is used to be filtered the polarization image fusion, generates and eliminates the reflective figure of glasses mirror surface
Picture.
2. according to claim 1 for eliminating the reflective photographic device of glasses mirror surface, which is characterized in that the polarised light
Element is polariscope;
The rotation control unit includes rotary unit and control unit, and described control unit is for receiving the synchronously control list
The rotation information that member is sent, and rotation control signal is generated according to the rotation information, the rotary unit is used for according to
Rotation control signal controls the polarization optical element and rotates according to preset rotation speed to multiple angles.
3. according to claim 2 for eliminating the reflective photographic device of glasses mirror surface, which is characterized in that at described image
Managing unit includes image processor and memory module;
The memory module is for storing the polarization image under the different angle;
Described image processor is used to read the polarization image from the memory module and be filtered to the polarization image
Fusion generates and eliminates the reflective image of glasses mirror surface.
4. according to claim 1 for eliminating the reflective photographic device of glasses mirror surface, which is characterized in that the camera shooting is single
Member is CCD camera or CMOS camera.
5. a kind of for eliminating the control method of the reflective photographic device of glasses mirror surface, which is characterized in that wanted applied to such as right
Any photographic device of 1-4 is sought, the method includes:
Synchronous control unit controls polarization optical element by rotation control unit and rotates according to preset rotation speed to multiple angles;
Camera unit acquires the polarization image in the emergent ray irradiation area of polarization optical element;
Synchronous control unit synchronously control image processing unit receives the polarization image under different angles;
Image processing unit is filtered fusion to the polarization image, generates and eliminates the reflective image of glasses mirror surface.
6. according to claim 5 for eliminating the control method of the reflective photographic device of glasses mirror surface, which is characterized in that
The rotation control unit includes rotary unit and control unit;
Described control unit receives the rotation information that the synchronous control unit is sent, and is generated and rotated according to the rotation information
Control signal;
The rotary unit controls the polarization optical element according to the rotation control signal and rotates at most according to preset rotation speed
A angle.
7. according to claim 6 for eliminating the control method of the reflective photographic device of glasses mirror surface, which is characterized in that
Described image processing unit includes image processor and memory module;
The method also includes:
The polarization image that memory module receives under different angles is stored;
Image processor reads the polarization image from the memory module and is filtered fusion to the polarization image, generates
Eliminate the reflective image of glasses mirror surface.
8. according to claim 7 for eliminating the control method of the reflective photographic device of glasses mirror surface, which is characterized in that
The preset rotation speed is greater than or equal to 1rps;
The quantity that described image processing unit receives the polarization image is n, wherein n >=24 frames/second;
Described image processing unit is received such as the deflection image under lower angle:0 °, 360 × 1/n, 360 × 2/n ... ..., 360 ×
(n-1)/n, 360 °.
9. according to claim 8 for eliminating the control method of the reflective photographic device of glasses mirror surface, which is characterized in that
Image processing unit is filtered fusion to the polarization image, generates and eliminates the reflective image of glasses mirror surface, including:
The clarity of each frame polarization image is calculated, and the polarization image is arranged according to clarity ascending order;
The brightness of each frame polarization image is calculated, and the polarization image is arranged according to brightness ascending order;
It removes clarity and arranges preceding 10% polarization image and the polarization image of brightness arrangement preceding 10%;
Remaining polarization image is subjected to fusion superposition, generates and eliminates the reflective image of glasses mirror surface.
10. according to claim 9 for eliminating the control method of the reflective photographic device of glasses mirror surface, feature exists
In the fusion superposition of the polarization image is in the following way:
I=(ω1·I1+ω2·I2+...ωn-1·I(n-1)+ωn·In)/n;
Wherein, I1、I2、...、InFor image to be fused, n is amount of images, ω1、ω2、...、ωnFor fusion coefficients, and ω1+
ω2+...+ωn=1, I are to eliminate the reflective image of glasses mirror surface.
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CN112185126A (en) * | 2020-09-27 | 2021-01-05 | 杭州海康威视数字技术股份有限公司 | Method, device and equipment for determining polarization angle |
CN112185126B (en) * | 2020-09-27 | 2022-01-25 | 杭州海康威视数字技术股份有限公司 | Method, device and equipment for determining polarization angle |
CN112672008A (en) * | 2020-12-14 | 2021-04-16 | 杭州联吉技术有限公司 | Lens adjusting method and device |
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