CN104463116A - Filter-frequency-adjustable high-precision face recognition system based on linear driving - Google Patents
Filter-frequency-adjustable high-precision face recognition system based on linear driving Download PDFInfo
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- CN104463116A CN104463116A CN201410715363.3A CN201410715363A CN104463116A CN 104463116 A CN104463116 A CN 104463116A CN 201410715363 A CN201410715363 A CN 201410715363A CN 104463116 A CN104463116 A CN 104463116A
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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 filter-frequency-adjustable high-precision face recognition system based on linear driving. The system is mainly composed of a facial image collector, a microprocessor MCU, a signal processing circuit, an adjustable filter circuit, a constant current source circuit and a pattern recognition circuit, wherein the microprocessor MCU is connected with the facial image collector, the signal processing circuit, the adjustable filter circuit, the constant current source circuit and the pattern recognition circuit are connected with the microprocessor MCU, the constant current source circuit is connected with the adjustable filter circuit, and the pattern recognition circuit is connected with the constant current source circuit. The system is characterized in that a linear driving circuit is further arranged between the signal processing circuit and the adjustable filter circuit; the linear driving circuit is composed of a driving chip U, a triode Q3, a triode Q4, a triode Q5, a triode Q6 and the like. The linear driving circuit enables the recognition system to maintain good stability even in the process of recognizing faces at different distances.
Description
Technical field
The present invention relates to a kind of face identification system, specifically refer to the adjustable frequency filtering high precision face identification system based on Linear Driving.
Background technology
Along with high-tech flourish, face identification system is used by the wide model of people as the convenience of human body password because of it.In addition intelligent management has come into the social life of people now, many Intelligent Buildings are rised sheer from level ground, and adapt to the epoch needs of information, as building and the working environment of nobleness, functionally must meet current and demand that is future development, become the base of culture and economic development.So face identification system has been applied in the gate identification system of Balkh, but because of current face identification system design existing defects, there will be unavoidably when the identification needing the face of collection apart from face identification system time different and refuse to recognize situation, namely None-identified goes out litigant, or system has carried out wrong identification, cause place to carry out personnel and enter into indoor, bring potential safety hazard.How making face identification system adjust frequency to keep the accuracy of identification of face identification system according to the distance of required identification face, is current people institute urgent problem.
Summary of the invention
The object of the invention is to overcome not high the brought potential safety hazard of current face identification system accuracy of identification, the adjustable frequency filtering high precision face identification system based on Linear Driving is provided.
The following technical scheme of object of the present invention realizes: based on the adjustable frequency filtering high precision face identification system of Linear Driving, primarily of man face image acquiring device, with the Micro-processor MCV that man face image acquiring device is connected, and the signal processing circuit to be connected with Micro-processor MCV, tunable filter circuit, the constant-current source circuit be connected with tunable filter circuit, the figure identification circuit be connected with constant-current source circuit forms, between signal processing circuit and tunable filter circuit, be also provided with linear drive circuit, described linear drive circuit is by driving chip U, triode Q3, triode Q4, triode Q5, triode Q6, positive pole is connected with signal processing circuit, the polar capacitor C10 that negative pole is connected with the IN1 pin of driving chip U after resistance R15, one end is connected with the collector of triode Q3, the resistance R16 that the other end is connected with the base stage of triode Q5 after resistance R17, positive pole is connected with the base stage of triode Q3, the polar capacitor C12 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C11 of minus earth, one end is connected with the emitter of triode Q3, the resistance R19 that the other end is connected with the base stage of triode Q4, one end is connected with the base stage of triode Q4, the resistance R18 that the other end is connected with the base stage of triode Q5, N pole is connected with the collector of triode Q3, the diode D1 that P pole is connected with the collector of triode Q4, positive terminal is connected with the collector of triode Q3, the not gate K that end of oppisite phase is connected with triode Q6 collector, one end is connected with triode Q6 emitter, the resistance R21 that the other end is connected with the emitter of triode Q5 after resistance R20, the end of oppisite phase of P pole Sheffer stroke gate K is connected, the diode D2 that N pole is connected with the tie point of resistance R21 with resistance R20 forms, the VCC pin of described driving chip U is connected with the base stage of triode Q3, END pin ground connection, OUT pin are connected with the collector of triode Q4, the collector of triode Q4 is also connected with the base stage of triode Q6, its emitter is connected with the base stage of triode man Q5, the grounded collector of triode Q5, the N pole of diode D2 is connected with tunable filter circuit.
Described signal processing circuit comprises process chip U1, polar capacitor C1, polar capacitor C2, resistance R1; The positive pole of polar capacitor C1 is connected with the VCC pin of process chip U1, its minus earth, one end of resistance R1 is connected with the VCC pin of process chip U1, the other end is then connected with the TRI pin of process chip U1, and the positive pole of polar capacitor C2 is connected with the CONT pin of process chip U1, other end ground connection; The RESET pin of described process chip U1 is connected with VCC pin, its tie point is then connected with an output terminal of Micro-processor MCV and constant-current source circuit simultaneously, OUT pin is connected with the positive pole of electric capacity C10, GND pin ground connection, THRE pin is then connected with another output terminal of Micro-processor MCV.
Described tunable filter circuit is by operational amplifier T1, operational amplifier T2, triode Q1, positive pole is connected with the N pole of diode D2, the polar capacitor C3 that negative pole is connected with the output terminal of operational amplifier T1 after potentiometer R3 through resistance R2, positive pole is connected with the normal phase input end of operational amplifier T1, the polar capacitor C5 that negative pole is connected with the collector of triode Q1, negative pole is connected with the output terminal of operational amplifier T1, the polar capacitor C4 that positive pole is connected with the positive pole of polar capacitor C3 after resistance R4, positive pole is connected with the emitter of triode Q1, the polar capacitor C6 that negative pole enters to be connected with the anti-phase defeated end of amplifier T2, one end is connected with the positive pole of polar capacitor C6, the resistance R5 that the other end is then connected with the inverting input of operational amplifier T2 after potentiometer R6 forms, the inverting input of described operational amplifier T1 is connected with the normal phase input end of operational amplifier T2, the output terminal of operational amplifier T2 is connected with constant-current source circuit, and the base stage of triode Q1 is connected with the negative pole of polar capacitor C3, its emitter is also connected with the positive pole of polar capacitor C4.
Described constant-current source circuit comprises resistance R7, potentiometer R8, resistance R9, resistance R10, polar capacitor C7, and triode Q2; The emitter of triode Q2 is connected with its collector after potentiometer R8, resistance R7, resistance R9, resistance R10, and its base stage is then connected with the tie point of resistance R9 and resistance R10 and figure identification circuit simultaneously, and collector is ground connection after polar capacitor C7; The tie point of resistance R9 and resistance R7 is connected with the output terminal of operational amplifier T2 and external power source simultaneously, and the collector of triode Q2 is also connected with figure identification circuit with the VCC pin of process chip U1 simultaneously.
Described figure identification circuit is by figure identification chip U2, differential amplifier T3, the polar capacitor C8 that positive pole is connected with the CO pin of figure identification chip U2, negative pole is connected with the CN pin of figure identification chip U2 after resistance R11, the resistance R12 be in parallel with polar capacitor C8, the polar capacitor C9 that positive pole is connected with the FX pin of figure identification chip U2 after resistance R13 through resistance R14, negative pole is then connected with the BE pin of figure identification chip U2 forms; The inverting input of described differential amplifier T3 is connected with the BE pin of figure identification chip U2, normal phase input end is connected with the collector of triode Q2, and the CO pin of figure identification chip U2 is also connected with the base stage of triode Q2, FU pin is empty pin.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) one-piece construction of the present invention is very simple, is convenient to install, easy to use.
(2) the present invention is provided with tunable filter circuit, and it can filter out unwanted ripple frequently, avoids being subject in identifying not needing ripple interference frequently, improves the accuracy of face identification system.
(3) the present invention is when adjusting potentiometer R3 and potentiometer R6, can adjust the identification frequency of face identification system, thus avoids the existing picture of mistake identification because decipherment distance difference produces.
(4) the present invention is provided with linear drive circuit, makes recognition system can also keep good stability when identifying the face of different distance.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present invention.
Fig. 2 is the structural representation of linear drive circuit of the present invention.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1, adjustable frequency filtering high precision face identification system based on Linear Driving of the present invention, primarily of man face image acquiring device, with the Micro-processor MCV that man face image acquiring device is connected, and the signal processing circuit to be connected with Micro-processor MCV, tunable filter circuit, the constant-current source circuit be connected with tunable filter circuit, the figure identification circuit be connected with constant-current source circuit forms, between signal processing circuit and tunable filter circuit, be also provided with linear drive circuit.
As shown in Figure 2, described linear drive circuit is by driving chip U, triode Q3, triode Q4, triode Q5, triode Q6, positive pole is connected with signal processing circuit, the polar capacitor C10 that negative pole is connected with the IN1 pin of driving chip U after resistance R15, one end is connected with the collector of triode Q3, the resistance R16 that the other end is connected with the base stage of triode Q5 after resistance R17, positive pole is connected with the base stage of triode Q3, the polar capacitor C12 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C11 of minus earth, one end is connected with the emitter of triode Q3, the resistance R19 that the other end is connected with the base stage of triode Q4, one end is connected with the base stage of triode Q4, the resistance R18 that the other end is connected with the base stage of triode Q5, N pole is connected with the collector of triode Q3, the diode D1 that P pole is connected with the collector of triode Q4, positive terminal is connected with the collector of triode Q3, the not gate K that end of oppisite phase is connected with triode Q6 collector, one end is connected with triode Q6 emitter, the resistance R21 that the other end is connected with the emitter of triode Q5 after resistance R20, the end of oppisite phase of P pole Sheffer stroke gate K is connected, the diode D2 that N pole is connected with the tie point of resistance R21 with resistance R20 forms, the VCC pin of described driving chip U is connected with the base stage of triode Q3, END pin ground connection, OUT pin are connected with the collector of triode Q4, the collector of triode Q4 is also connected with the base stage of triode Q6, its emitter is connected with the base stage of triode man Q5, the grounded collector of triode Q5, the N pole of diode D2 is connected with tunable filter circuit.Linear drive circuit, makes recognition system can also keep good stability when identifying the face of different distance.In order to ensure implementation result, described driving chip U is preferably LM387 integrated chip, its highly sensitive and low price.
Described signal processing circuit comprises process chip U1, polar capacitor C1, polar capacitor C2, resistance R1; The positive pole of polar capacitor C1 is connected with the VCC pin of process chip U1, its minus earth, one end of resistance R1 is connected with the VCC pin of process chip U1, the other end is then connected with the TRI pin of process chip U1, and the positive pole of polar capacitor C2 is connected with the CONT pin of process chip U1, other end ground connection; The RESET pin of described process chip U1 is connected with VCC pin, its tie point is then connected with an output terminal of Micro-processor MCV and constant-current source circuit simultaneously, OUT pin is connected with the positive pole of electric capacity C10, GND pin ground connection, THRE pin is then connected with another output terminal of Micro-processor MCV.
Described tunable filter circuit is by operational amplifier T1, operational amplifier T2, triode Q1, positive pole is connected with the N pole of diode D2, the polar capacitor C3 that negative pole is connected with the output terminal of operational amplifier T1 after potentiometer R3 through resistance R2, positive pole is connected with the normal phase input end of operational amplifier T1, the polar capacitor C5 that negative pole is connected with the collector of triode Q1, negative pole is connected with the output terminal of operational amplifier T1, the polar capacitor C4 that positive pole is connected with the positive pole of polar capacitor C3 after resistance R4, positive pole is connected with the emitter of triode Q1, the polar capacitor C6 that negative pole enters to be connected with the anti-phase defeated end of amplifier T2, one end is connected with the positive pole of polar capacitor C6, the resistance R5 that the other end is then connected with the inverting input of operational amplifier T2 after potentiometer R6 forms, the inverting input of described operational amplifier T1 is connected with the normal phase input end of operational amplifier T2, the output terminal of operational amplifier T2 is connected with constant-current source circuit, and the base stage of triode Q1 is connected with the negative pole of polar capacitor C3, its emitter is also connected with the positive pole of polar capacitor C4.
Described constant-current source circuit comprises resistance R7, potentiometer R8, resistance R9, resistance R10, polar capacitor C7, and triode Q2; The emitter of triode Q2 is connected with its collector after potentiometer R8, resistance R7, resistance R9, resistance R10, and its base stage is then connected with the tie point of resistance R9 and resistance R10 and figure identification circuit simultaneously, and collector is ground connection after polar capacitor C7; The tie point of resistance R9 and resistance R7 is connected with the output terminal of operational amplifier T2 and external power source simultaneously, and the collector of triode Q2 is also connected with figure identification circuit with the VCC pin of process chip U1 simultaneously.
Described figure identification circuit is by figure identification chip U2, differential amplifier T3, the polar capacitor C8 that positive pole is connected with the CO pin of figure identification chip U2, negative pole is connected with the CN pin of figure identification chip U2 after resistance R11, the resistance R12 be in parallel with polar capacitor C8, the polar capacitor C9 that positive pole is connected with the FX pin of figure identification chip U2 after resistance R13 through resistance R14, negative pole is then connected with the BE pin of figure identification chip U2 forms; The inverting input of described differential amplifier T3 is connected with the BE pin of figure identification chip U2, normal phase input end is connected with the collector of triode Q2, and the CO pin of figure identification chip U2 is also connected with the base stage of triode Q2, FU pin is empty pin.
As mentioned above, just well the present invention can be realized.
Claims (5)
1. based on the adjustable frequency filtering high precision face identification system of Linear Driving, primarily of man face image acquiring device, with the Micro-processor MCV that man face image acquiring device is connected, and the signal processing circuit to be connected with Micro-processor MCV, tunable filter circuit, the constant-current source circuit be connected with tunable filter circuit, the figure identification circuit be connected with constant-current source circuit forms, and it is characterized in that: between signal processing circuit and tunable filter circuit, be also provided with linear drive circuit, described linear drive circuit is by driving chip U, triode Q3, triode Q4, triode Q5, triode Q6, positive pole is connected with signal processing circuit, the polar capacitor C10 that negative pole is connected with the IN1 pin of driving chip U after resistance R15, one end is connected with the collector of triode Q3, the resistance R16 that the other end is connected with the base stage of triode Q5 after resistance R17, positive pole is connected with the base stage of triode Q3, the polar capacitor C12 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C11 of minus earth, one end is connected with the emitter of triode Q3, the resistance R19 that the other end is connected with the base stage of triode Q4, one end is connected with the base stage of triode Q4, the resistance R18 that the other end is connected with the base stage of triode Q5, N pole is connected with the collector of triode Q3, the diode D1 that P pole is connected with the collector of triode Q4, positive terminal is connected with the collector of triode Q3, the not gate K that end of oppisite phase is connected with triode Q6 collector, one end is connected with triode Q6 emitter, the resistance R21 that the other end is connected with the emitter of triode Q5 after resistance R20, the end of oppisite phase of P pole Sheffer stroke gate K is connected, the diode D2 that N pole is connected with the tie point of resistance R21 with resistance R20 forms, the VCC pin of described driving chip U is connected with the base stage of triode Q3, END pin ground connection, OUT pin are connected with the collector of triode Q4, the collector of triode Q4 is also connected with the base stage of triode Q6, its emitter is connected with the base stage of triode man Q5, the grounded collector of triode Q5, the N pole of diode D2 is connected with tunable filter circuit.
2. the adjustable frequency filtering high precision face identification system based on Linear Driving according to claim 1, is characterized in that: described signal processing circuit comprises process chip U1, polar capacitor C1, polar capacitor C2, resistance R1; The positive pole of polar capacitor C1 is connected with the VCC pin of process chip U1, its minus earth, one end of resistance R1 is connected with the VCC pin of process chip U1, the other end is then connected with the TRI pin of process chip U1, and the positive pole of polar capacitor C2 is connected with the CONT pin of process chip U1, other end ground connection; The RESET pin of described process chip U1 is connected with VCC pin, its tie point is then connected with an output terminal of Micro-processor MCV and constant-current source circuit simultaneously, OUT pin is connected with the positive pole of electric capacity C10, GND pin ground connection, THRE pin is then connected with another output terminal of Micro-processor MCV.
3. the adjustable frequency filtering high precision face identification system based on Linear Driving according to claim 2, it is characterized in that: described tunable filter circuit is by operational amplifier T1, operational amplifier T2, triode Q1, positive pole is connected with the N pole of diode D2, the polar capacitor C3 that negative pole is connected with the output terminal of operational amplifier T1 after potentiometer R3 through resistance R2, positive pole is connected with the normal phase input end of operational amplifier T1, the polar capacitor C5 that negative pole is connected with the collector of triode Q1, negative pole is connected with the output terminal of operational amplifier T1, the polar capacitor C4 that positive pole is connected with the positive pole of polar capacitor C3 after resistance R4, positive pole is connected with the emitter of triode Q1, the polar capacitor C6 that negative pole enters to be connected with the anti-phase defeated end of amplifier T2, one end is connected with the positive pole of polar capacitor C6, the resistance R5 that the other end is then connected with the inverting input of operational amplifier T2 after potentiometer R6 forms, the inverting input of described operational amplifier T1 is connected with the normal phase input end of operational amplifier T2, the output terminal of operational amplifier T2 is connected with constant-current source circuit, and the base stage of triode Q1 is connected with the negative pole of polar capacitor C3, its emitter is also connected with the positive pole of polar capacitor C4.
4. the adjustable frequency filtering high precision face identification system based on Linear Driving according to claim 3, is characterized in that: described constant-current source circuit comprises resistance R7, potentiometer R8, resistance R9, resistance R10, polar capacitor C7, and triode Q2; The emitter of triode Q2 is connected with its collector after potentiometer R8, resistance R7, resistance R9, resistance R10, and its base stage is then connected with the tie point of resistance R9 and resistance R10 and figure identification circuit simultaneously, and collector is ground connection after polar capacitor C7; The tie point of resistance R9 and resistance R7 is connected with the output terminal of operational amplifier T2 and external power source simultaneously, and the collector of triode Q2 is also connected with figure identification circuit with the VCC pin of process chip U1 simultaneously.
5. the adjustable frequency filtering high precision face identification system based on Linear Driving according to claim 4, it is characterized in that: described figure identification circuit is by figure identification chip U2, differential amplifier T3, positive pole is connected with the CO pin of figure identification chip U2, the polar capacitor C8 that negative pole is connected with the CN pin of figure identification chip U2 after resistance R11, the resistance R12 be in parallel with polar capacitor C8, positive pole is connected with the FX pin of figure identification chip U2 after resistance R13 through resistance R14, the polar capacitor C9 that negative pole is then connected with the BE pin of figure identification chip U2 forms, the inverting input of described differential amplifier T3 is connected with the BE pin of figure identification chip U2, normal phase input end is connected with the collector of triode Q2, and the CO pin of figure identification chip U2 is also connected with the base stage of triode Q2, FU pin is empty pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715363.3A CN104463116A (en) | 2014-11-29 | 2014-11-29 | Filter-frequency-adjustable high-precision face recognition system based on linear driving |
| CN201510323462.1A CN104966056A (en) | 2014-11-29 | 2015-06-12 | Adjustable filtering frequency high-precision face identification system based on loss inhibition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715363.3A CN104463116A (en) | 2014-11-29 | 2014-11-29 | Filter-frequency-adjustable high-precision face recognition system based on linear driving |
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| CN104463116A true CN104463116A (en) | 2015-03-25 |
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| CN201410715363.3A Pending CN104463116A (en) | 2014-11-29 | 2014-11-29 | Filter-frequency-adjustable high-precision face recognition system based on linear driving |
| CN201510323462.1A Withdrawn CN104966056A (en) | 2014-11-29 | 2015-06-12 | Adjustable filtering frequency high-precision face identification system based on loss inhibition |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510323462.1A Withdrawn CN104966056A (en) | 2014-11-29 | 2015-06-12 | Adjustable filtering frequency high-precision face identification system based on loss inhibition |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104683659A (en) * | 2015-03-31 | 2015-06-03 | 宁波摩米创新工场电子科技有限公司 | Audion common emitter amplifying circuit-based high-precision image processing system |
| CN104700351A (en) * | 2015-03-31 | 2015-06-10 | 宁波摩米创新工场电子科技有限公司 | High-precision image processing system based on image coding processing |
| CN104700350A (en) * | 2015-03-31 | 2015-06-10 | 宁波摩米创新工场电子科技有限公司 | High-precision image processing system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107422836B (en) * | 2017-07-06 | 2020-01-31 | 成都沃赢创投科技有限公司 | data processing system for a self-healing optical motion capture device |
-
2014
- 2014-11-29 CN CN201410715363.3A patent/CN104463116A/en active Pending
-
2015
- 2015-06-12 CN CN201510323462.1A patent/CN104966056A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104683659A (en) * | 2015-03-31 | 2015-06-03 | 宁波摩米创新工场电子科技有限公司 | Audion common emitter amplifying circuit-based high-precision image processing system |
| CN104700351A (en) * | 2015-03-31 | 2015-06-10 | 宁波摩米创新工场电子科技有限公司 | High-precision image processing system based on image coding processing |
| CN104700350A (en) * | 2015-03-31 | 2015-06-10 | 宁波摩米创新工场电子科技有限公司 | High-precision image processing system |
| CN104700351B (en) * | 2015-03-31 | 2018-01-05 | 宁波摩米创新工场电子科技有限公司 | A kind of high-precision image processing system based on Image Coding processing |
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| CN104966056A (en) | 2015-10-07 |
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Application publication date: 20150325 |