CN104866836B - A kind of image identification system based on infrared imaging - Google Patents
A kind of image identification system based on infrared imaging Download PDFInfo
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- CN104866836B CN104866836B CN201510292794.8A CN201510292794A CN104866836B CN 104866836 B CN104866836 B CN 104866836B CN 201510292794 A CN201510292794 A CN 201510292794A CN 104866836 B CN104866836 B CN 104866836B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
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Abstract
The invention discloses a kind of image identification systems based on infrared imaging, and by infrared imaging system (1), the image identification system (2) being connected with infrared imaging system (1) forms；The infrared imaging system (1) is by infrared light supply (11), the optical system (12) being connected with infrared light supply (11), the sweep mechanism (13) being connected with optical system (12), the infrared detector (14) being connected with sweep mechanism (13), and the image capture module (15) being connected with infrared detector (14) form；The present invention can largely inhibit the optical content in natural light, adapt to night, daytime, and the use of the changeable environments such as side, inverse, positive light substantially increases the application scenario of the present invention.Meanwhile the present invention captures target using infrared imaging principle, therefore it is not easily susceptible to extraneous factor interference, and the abundant information obtained, largely improves the accuracy of image identification system.
Description
Technical field
The present invention relates to a kind of image identification system, in particular to a kind of image identification systems based on infrared imaging.
Background technology
In order to differentiate user's identity, or in order to which security consideration is in some cases current safety using monitoring system
The usual way ensured.Traditional way is will to monitor system setting password, which only has specific people to know.So
And if password leaks, other users can be carried out the system, can equally safety be made to reduce.Some signs of people are
Can not replicate, thus using the sign of people, fingerprint or face as judge user's identity biological recognition system develop very
Soon.
Wherein, a hot issue of the face recognition technology as field of biological recognition, many research institutions and company are all
Research and corresponding product development are carried out in positive, and has had investigated a variety of face recognition algorithms.Known using face
Other algorithm carries out recognition of face to which the accuracy rate for carrying out identity judgement is high, and many products are attained by 90% or more identification
Rate.But the product of various algorithms cannot all adapt to the variation of illumination completely at present, that is to say, that meeting after ambient lighting changes
Discrimination is caused to reduce.Internal authority test (FRVT2002) shows that discrimination is reduced to by the variation of illumination from 97% or more
50% or so.To solve the above-mentioned problems, there is a kind of new processing method, i.e., the people or object that enter monitoring region are carried out
Radiation of visible light, makes its brightness increase, and this method can neutralize the variation of a part of ambient light.However it can not be significantly
Ectocine is eliminated, meanwhile, increase the discomfort that visible fill-in light causes user again.Therefore existing product is only used for without certainly
The occasion of the light environments that immobilize such as inner passage, the basement of right light interference, causes application range to be restricted.Therefore,
There is provided one kind can inhibit extraneous natural light to influence, and the image identification system of strong applicability is then the current task of top priority.
Invention content
It is an object of the invention to overcome traditional image identification system at present can not inhibit extraneous natural light influence and
The defect that accuracy of identification is low is caused, a kind of image identification system based on infrared imaging is provided.
The purpose of the invention is achieved by the following technical solution：A kind of image identification system based on infrared imaging, by
Infrared imaging system, the image identification system composition being connected with infrared imaging system.The infrared imaging system is by infrared
Light source, the optical system being connected with infrared light supply, the sweep mechanism being connected with optical system are connected with sweep mechanism
Infrared detector, and the image capture module being connected with infrared detector form.And the image identification system then by
Central processing module, the image processing system being connected with central processing module, display, alarm and memory composition.
The image processing system is then by signal input circuit, the signal processing circuit being connected with signal input circuit, Yi Jiyu
Trigger circuit and the tuning circuit composition that signal processing circuit is connected.
Further, the signal input circuit is by triode Q1, resistance R2, resistance R1, and one end is with triode Q1's
The resistance R3 that base stage is connected, the other end is then sequentially connected after resistance R2 and resistance R1 with the emitter of triode Q1, just
Pole is connected with the emitter of triode Q1, the capacitance C1 of cathode ground connection, and anode be connected with the collector of triode Q1,
The capacitance C2 compositions being grounded while cathode is then connected with signal processing circuit；The emitter and signal of the triode Q1
Processing circuit is connected.
The signal processing circuit is by processing chip U, capacitance C3, resistance R5, and the capacitance pole C5, P is with processing chip U's
The diode D1 that SW1 pins are connected, the poles N are then grounded after capacitance C3, one end is connected with the poles N of diode D1, the other end
The resistance R4 being grounded while being then connected with the GND pins of processing chip U after resistance R5, anode is with processing chip U's
The capacitance C4 that CTRL pins are connected, cathode is grounded, one end is connected with the CTRL pins of processing chip U, the other end is then through electricity
Hold the resistance R6 that is grounded after C5, anode is connected with the SS pins of processing chip U, the capacitance that cathode is then connected with trigger circuit
C6 and the resistance R7 compositions that one end is connected with the PGOOD pins of processing chip U, the other end is then connected with tuning circuit；
The VIN pins of the processing chip U are connected with the emitter of triode Q1, its FB pin then company with resistance R4 and resistance R5
Contact is connected, its CTRL pin is then connected with the cathode of capacitance C2, its SHDN pin is then connected with trigger circuit.
The trigger circuit is by flip chip K, triode Q4, capacitance C12, capacitance C11, the base of one end and triode Q4
The resistance R12 that pole is connected, the other end is then connected with the OUT pins of flip chip K, the emitter phase of one end and triode Q4
Connection, the resistance R14 that is then connected with the GND pins of flip chip K after capacitance C12 of the other end and one end and triggering core
The resistance R13 compositions that the LX pins of piece K are connected, the other end is then connected after capacitance C11 with the FB pins of flip chip K；
The IN pins of the flip chip K are connected with the SHDN pins of processing chip U, its EN pin is then connected with the cathode of capacitance C6
It connects, its GND pin ground connection；The collector of the triode Q4 is then connected with tuning circuit.
The tuning circuit is by triode Q2, triode Q3, inductance L1, and resistance R8, capacitance C8, the poles resistance R9, N are sequentially
It is connected with the collector of triode Q2 after inductance L1 and resistance R8, the poles the P then emitter after capacitance C8 with triode Q3
The varactor D2 being connected, one end is connected with the poles P of varactor D2, the other end then connects the resistance of -15V voltages
R11, anode is connected with the poles P of varactor D2, the capacitance C9 that cathode is then connected with the collector of triode Q4, positive
It is connected with the emitter of triode Q3, the tunable capacitor C10 that cathode is then grounded, one end is connected with the emitter of triode Q2
Connect, the other end is then followed by the inductance L2 of+15V voltages through resistance R9, anode is connected with the tie point of inductance L2 and resistance R9, bears
The capacitance C7 and one end is connected with the anode of capacitance C7, the other end is then connected with the base stage of triode Q3 that pole is grounded
Resistance R10 compositions；The base stage of the triode Q2 is connected after resistance R7 with the PGOOD pins of processing chip U, and triode
The collector of Q3 is then grounded.
In order to ensure effect, the processing chip U is preferably LT1942 integrated circuits, and flip chip K is preferably then
EMD2050 integrated circuits are realized.
The present invention compared with the prior art, has the following advantages and advantageous effect：
(1) present invention can largely inhibit optical content in natural light, adapt to night, daytime, and side, inverse, positive light etc. are more
The use of changing environment substantially increases the application scenario of the present invention.
(2) present invention captures target using infrared imaging principle, therefore it is not easily susceptible to extraneous factor interference, and
The abundant information of acquisition largely improves the accuracy of image identification system.
(3) the more traditional image acquisition device of image-forming range of the invention is remote, when being applied in access control system such as the present invention,
It is identified to face is in close proximity can to carry out man face image acquiring as being then not required to, so that identification process more clean, be hygienic.
(4) recognition speed of the present invention is fast, meets the demand of the fast pace life of current people.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention.
Fig. 2 is the image processing system electrical block diagram of the present invention.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, the image identification system 2 that the present invention by infrared imaging system 1, is connected with infrared imaging system 1
Composition.The infrared imaging system 1 is used to be acquired the picture signal for being identified object, and infrared by infrared light supply 11
The optical system 12 that light source 11 is connected, the sweep mechanism 13 being connected with optical system 12 are connected with sweep mechanism 13
Infrared detector 14, and the image capture module 15 being connected with infrared detector 14 form.
Wherein, for infrared light supply 11 for sending out near infrared light, which is narrow light beam, can make to be identified
Target protrudes in visual field to be come, it is made to form big contrast with background, it is hereby achieved that more clearly image, makes the present invention
It can be applied to night-environment.When infrared illumination is mapped to identified target, identified target can reflect infrared light, and
The infrared light carries out optically filtering through optical system 12 again.And sweep mechanism 13 then receives the infrared light after optically filtering
Collection, and it is conveyed to infrared detector 14.The infrared detector 14 is then used to infrared radiation signal be transformed into electric signal output, and
Image capture module 15 is then used to the sightless signal of human eye being transformed into corresponding digital picture, and is conveyed to image recognition system
System 2.
The infrared light supply 1 is realized using existing infrared light-emitting diode, and infrared detector 14 is then preferential using wide
The WS-600HW types infrared detector of state city Ai Li electron riches Science and Technology Ltd.s production realizes, the infrared detector of the model
Operating temperature range be -10 DEG C~+50 DEG C, and detection range is remote.And optical system 12 and sweep mechanism 13 and image are adopted
Collection module 15 is then all made of existing technology and can be realized.
Image identification system 2 is then used to that 1 the image collected of the infrared imaging system to be identified.It is by centre
Manage module 21, the image processing system 22 being connected with central processing module 21, display 23, alarm 24 and memory 25
Composition.
Wherein, control centre of the central processing module 21 as the image identification system 2, using existing microcontroller come
It realizes.Display 23 then is used to show the image of identified target, and memory 25 is then used to store the figure of measured target in advance
Picture.When image identification system 2 receives the realtime graphic of measured target, memory 25 then can be advance the image and its inside
The measured target image of storage is compared, if comparison is unsuccessful, memory 25 ifs can send a signal to central processing module
21, it allows it to start alarm 24 and alarms.And image processing system 22 is then used to handle data image, makes image more
It is clear to add.
As shown in Fig. 2, the image processing system 22 is then by signal input circuit, the signal being connected with signal input circuit
Processing circuit, and the trigger circuit and tuning circuit that are connected with signal processing circuit form.
Wherein, signal input circuit is by triode Q1, resistance R2, resistance R1, one end is connected with the base stage of triode Q1,
The resistance R3 that the other end is then sequentially connected after resistance R2 and resistance R1 with the emitter of triode Q1, anode and triode Q1
Emitter be connected, cathode ground connection capacitance C1, and anode be connected with the collector of triode Q1, cathode then with signal
The capacitance C2 compositions being grounded while processing circuit is connected.The emitter of the triode Q1 is connected with signal processing circuit
It connects.
And signal processing circuit is by processing chip U, resistance R4, resistance R5, resistance R6, resistance R7, capacitance C3, capacitance C4,
Capacitance C5, capacitance C6 and diode D1 compositions.
When connection, the poles P of diode D1 are connected with the SW1 pins of processing chip U, its pole N is then followed by through capacitance C3
Ground, one end of resistance R4 is connected with the poles N of diode D1, its other end then after resistance R5 with the GND pins of processing chip U
It is grounded while being connected, the anode of capacitance C4 is connected with the CTRL pins of processing chip U, its cathode is grounded, resistance R6's
One end is connected with the CTRL pins of processing chip U, its other end is then grounded after capacitance C5, anode and the processing core of capacitance C6
The SS pins of piece U are connected, its cathode is then connected with trigger circuit, one end of resistance R7 and the PGOOD pins of processing chip U
It is connected, its other end is then connected with tuning circuit.
Meanwhile the VIN pins of the processing chip U are connected with the emitter of triode Q1, its FB pin then with resistance
The tie point of R4 and resistance R5 are connected, its CTRL pin is then connected with the cathode of capacitance C2, its SHDN pin then with triggering
Circuit is connected.In order to ensure implementation result, processing chip U is preferentially realized using LT1942 integrated circuits.
Trigger circuit is then by flip chip K, triode Q4, resistance R12, resistance R13, resistance R14, capacitance C11 and electricity
Hold C12 compositions.When connection, one end of resistance R12 is connected with the base stage of triode Q4, its other end then with flip chip K
OUT pins be connected, one end of resistance R14 is connected with the emitter of triode Q4, its other end then after capacitance C12 with
The GND pins of flip chip K are connected, and one end of resistance R13 is connected with the LX pins of flip chip K, its other end then passes through
It is connected with the FB pins of flip chip K after capacitance C11.The IN pins of the flip chip K and the SHDN pins of processing chip U
It is connected, its EN pin is then connected with the cathode of capacitance C6, its GND pin ground connection；The collector of the triode Q4 then with
Tuning circuit is connected.In order to preferably implement the present invention, flip chip K is preferably EMD2050 integrated circuits to realize.
Tuning circuit can be such that image more stablizes, and image be identified conducive to the present invention, by triode Q2, three poles
Pipe Q3, inductance L1, resistance R8, capacitance C8, the poles resistance R9, the N sequentially collector after inductance L1 and resistance R8 with triode Q2
It is connected, the varactor D2 that the poles P are then connected after capacitance C8 with the emitter of triode Q3, one end and varactor
The poles P of D2 are connected, the other end then meets the resistance R11 of -15V voltages, and anode is connected with the poles P of varactor D2, cathode
The capacitance C9 being then connected with the collector of triode Q4, anode is connected with the emitter of triode Q3, cathode is then grounded
Tunable capacitor C10, one end is connected with the emitter of triode Q2, the other end is then followed by the inductance of+15V voltages through resistance R9
L2, the anode of anode is connected with the tie point of inductance L2 and resistance R9, cathode is grounded capacitance C7 and one end and capacitance C7
It is connected, the resistance R10 compositions that the other end is then connected with the base stage of triode Q3.The base stage of the triode Q2 is through resistance R7
It is connected afterwards with the PGOOD pins of processing chip U, and the collector of triode Q3 is then grounded.
As described above, the present invention can be realized well.
Claims (6)
1. a kind of image identification system based on infrared imaging, it is characterised in that：Its by infrared imaging system (1), with it is infrared at
Image identification system (2) composition being connected as system (1)；The infrared imaging system (1) is and red by infrared light supply (11)
The optical system (12) that outer light source (11) is connected, the sweep mechanism (13) being connected with optical system (12), with sweep mechanism
(13) infrared detector (14) being connected, and the image capture module (15) being connected with infrared detector (14) form；
And the image identification system (2) is then by central processing module (21), at the image being connected with central processing module (21)
Reason system (22), display (23), alarm (24) and memory (25) composition；The image processing system (22) then by
Signal input circuit, the signal processing circuit being connected with signal input circuit, and be connected with signal processing circuit tactile
Power Generation Road and tuning circuit composition；The tuning circuit by triode Q2, triode Q3, inductance L1, resistance R8, capacitance C8,
The poles resistance R9, N are sequentially connected after inductance L1 and resistance R8 with the collector of triode Q2, the poles P are then after capacitance C8 with three
The varactor D2 that the emitter of pole pipe Q3 is connected, one end is connected with the poles P of varactor D2, the other end then connect-
The resistance R11 of 15V voltages, anode be connected with the poles P of varactor D2, the capacitance that cathode is then connected with trigger circuit
C9, anode be connected with the emitter of triode Q3, the tunable capacitor C10 that cathode is then grounded, the transmitting of one end and triode Q2
Pole is connected, the other end is then followed by the inductance L2 of+15V voltages through resistance R9, the tie point phase of anode and inductance L2 and resistance R9
Connection, cathode ground connection capacitance C7 and one end be connected with the anode of capacitance C7, the other end then with the base stage phase of triode Q3
The resistance R10 compositions of connection；The base stage of the triode Q2 is connected with signal processing circuit, and the collector of triode Q3 is then
Ground connection.
2. a kind of image identification system based on infrared imaging according to claim 1, it is characterised in that：The signal
Input circuit is by triode Q1, resistance R2, resistance R1, and one end is connected with the base stage of triode Q1, the other end is then sequentially through electricity
The resistance R3 that is connected with the emitter of triode Q1 after resistance R2 and resistance R1, anode is connected with the emitter of triode Q1,
The capacitance C1 of cathode ground connection, and anode is connected with the collector of triode Q1, cathode is then connected with signal processing circuit
While the capacitance C2 composition that is grounded；The emitter of the triode Q1 is connected with signal processing circuit.
3. a kind of image identification system based on infrared imaging according to claim 2, it is characterised in that：The signal
Processing circuit by processing chip U, capacitance C3, resistance R5, the capacitance pole C5, P is connected with the SW1 pins of processing chip U, the poles N then
The diode D1 being grounded after capacitance C3, one end is connected with the poles N of diode D1, the other end then after resistance R5 with processing core
The resistance R4 that the GND pins of piece U are grounded while being connected, anode is connected with the CTRL pins of processing chip U, cathode is grounded
Capacitance C4, the resistance R6 that one end is connected with the CTRL pins of processing chip U, the other end is then grounded after capacitance C5, anode
It is connected with the SS pins of processing chip U, the capacitance C6 that cathode is then connected with trigger circuit and one end and processing chip U
PGOOD pins be connected, the other end is then connected with the base stage of triode Q2 resistance R7 compositions；The processing chip U's
VIN pins are connected with the emitter of triode Q1, its FB pin is then connected with the tie point of resistance R4 and resistance R5, it
CTRL pins are then connected with the cathode of capacitance C2, its SHDN pin is then connected with trigger circuit.
4. a kind of image identification system based on infrared imaging according to claim 3, it is characterised in that：The triggering
Circuit is by flip chip K, triode Q4, capacitance C12, capacitance C11, one end is connected with the base stage of triode Q4, the other end then
The resistance R12 being connected with the OUT pins of flip chip K, one end is connected with the emitter of triode Q4, the other end is then through electricity
Hold the resistance R14 that is connected with the GND pins of flip chip K and one end after C12 be connected with the LX pins of flip chip K,
The resistance R13 compositions that the other end is then connected after capacitance C11 with the FB pins of flip chip K；The IN of the flip chip K is managed
Foot is connected with the SHDN pins of processing chip U, its EN pin is then connected with the cathode of capacitance C6, its GND pin ground connection；Institute
The collector for stating triode Q4 is then connected with the cathode of capacitance C9.
5. according to a kind of image identification system based on infrared imaging of claim 3~4 any one of them, it is characterised in that：
The processing chip U is LT1942 integrated circuits.
6. a kind of image identification system based on infrared imaging according to claim 4, it is characterised in that：The triggering
Chip K is EMD2050 integrated circuits.
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| CN201510292794.8A CN104866836B (en) | 2015-05-30 | 2015-05-30 | A kind of image identification system based on infrared imaging |
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| CN201510292794.8A CN104866836B (en) | 2015-05-30 | 2015-05-30 | A kind of image identification system based on infrared imaging |
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| CN104866836B true CN104866836B (en) | 2018-08-07 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975577A (en) * | 2011-10-07 | 2014-08-06 | 菲力尔系统公司 | Smart surveillance camera systems and methods |
| CN104091408A (en) * | 2014-05-09 | 2014-10-08 | 郑州轻工业学院 | Infant sleeping posture intelligent identification method and device based on thermal infrared imaging |
| CN204028938U (en) * | 2014-07-03 | 2014-12-17 | 宁波摩米创新工场电子科技有限公司 | A kind of rapid image recognition system |
| CN204028661U (en) * | 2014-07-03 | 2014-12-17 | 宁波摩米创新工场电子科技有限公司 | Based on the Intelligent home monitoring system of cloud computing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005072358A2 (en) * | 2004-01-28 | 2005-08-11 | Canesta, Inc. | Single chip red, green, blue, distance (rgb-z) sensor |
-
2015
- 2015-05-30 CN CN201510292794.8A patent/CN104866836B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103975577A (en) * | 2011-10-07 | 2014-08-06 | 菲力尔系统公司 | Smart surveillance camera systems and methods |
| CN104091408A (en) * | 2014-05-09 | 2014-10-08 | 郑州轻工业学院 | Infant sleeping posture intelligent identification method and device based on thermal infrared imaging |
| CN204028938U (en) * | 2014-07-03 | 2014-12-17 | 宁波摩米创新工场电子科技有限公司 | A kind of rapid image recognition system |
| CN204028661U (en) * | 2014-07-03 | 2014-12-17 | 宁波摩米创新工场电子科技有限公司 | Based on the Intelligent home monitoring system of cloud computing |
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