CN104581078A - Face image acquisition and processing system and method - Google Patents
Face image acquisition and processing system and method Download PDFInfo
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- CN104581078A CN104581078A CN201510028179.6A CN201510028179A CN104581078A CN 104581078 A CN104581078 A CN 104581078A CN 201510028179 A CN201510028179 A CN 201510028179A CN 104581078 A CN104581078 A CN 104581078A
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Abstract
The invention discloses a face image acquisition and processing system. The face image acquisition and processing system comprises a camera lens, a digital monitoring image sensor, an ISP image data processor, an MJPG encoder, a USB encoder and a USB interface, wherein the digital monitoring image sensor is connected with the camera lens, the ISP image data processor is connected with the digital monitoring image sensor, the MJPG encoder is connected with the ISP image data processor, the USB encoder is connected with the MJPG encoder, and the USB interface is connected with the USB encoder. The invention further discloses a face image acquisition and processing method. By means of the face image acquisition and processing system and method, acquisition of face information can be achieved in a complex environment or a low-light environment, and more abundant image data can be collected.
Description
Technical field
The present invention relates to field of face identification, more specifically, relate to a kind of man face image acquiring and image processing system and method.
Background technology
Recognition of face is a kind of biological identification technology carrying out identification based on the face feature information of people.Image or the video flowing of face is contained with video camera or camera collection, and automatic detection and tracking face in the picture, and then the face detected is carried out to a series of correlation techniques of face, be usually also called Identification of Images, face recognition.
Face identification system mainly comprises four parts, is respectively: man face image acquiring and detection, facial image preliminary treatment, facial image feature extraction and matching and recognition.
The camera module of what existing man face image acquiring camera module adopted is Visual communications ready-made on market, it is cheap, product diversification, client can be made rapidly to accept the concept of recognition of face and dominate the market at the beginning.But along with market is constantly expanded, the understanding of client to recognition of face is constantly deepened, the camera module of Visual communications can not meet the demand of client, is below the technical parameter of current Visual communications camera module:
| Lens focus | F＝6.4mm | Lens aperture | F/NO＝2.8 |
| Angle lens | Level angle=63 ° | ||
| Vertical angle=43 ° | |||
| Image compression | MJPG | ||
| Interface | USB2.0 | ||
| Spectrum assignment | Automatically | White balance controls | Automatically |
| Image resolution ratio | 860*480 | ||
| Dynamic range | >72DB |
Recognizing from above parameter, it is low to there is resolution in the camera module of Visual communications, the shortcoming that dynamic range is little, and when under specific environment (sufficient light, stable environment), it can meet the collection demand of face information.But complex environment or low light according under, it cannot meet the collection demand of face information, and this true requirement of gathering of face information at present just, therefore a camera module being exclusively used in recognition of face of market in urgent need is to complete the collection of human face image information.
Summary of the invention
The present invention be directed to above-mentioned the deficiencies in the prior art and a kind of man face image acquiring of providing and image processing system and method, solve complex environment or low light according to the acquisition problems of human face information, more abundant view data can be collected.
For achieving the above object, the technical scheme taked of the present invention is as follows:
A kind of man face image acquiring and image processing system, comprising:
Camera lens, it is for being converted to light signal by object;
Digital monitor images transducer, it is connected with described camera lens, for the light signal received is converted to analog electronic signal, then analog electronic signal is converted to digital signal and carries out view data output;
ISP image data processor, it is connected with described digital monitor images transducer, for carrying out aftertreatment to the viewdata signal of input, and carries out the image control of white balance, exposure together with described digital monitor images transducer;
MJPG encoder, it is connected with described ISP image data processor, for encoding to the picture signal of aftertreatment;
USB encoder, it is connected with described MJPG encoder, for carrying out the modulation of signal; And
USB interface, it is connected with described USB encoder, for by information transmission to the information processing terminal.
Further, described lens focus is F=4.2mm, and described lens aperture is F/NO=1.8, and described angle lens is: level angle=50 °, vertical angle=39 °.
Further, described USB interface is USB2.0.
Further, described digital monitor images transducer comprises sensing chip.
Further, described sensing chip resolution is 1280*720, and described sensing chip dynamic range is >115DB.
A kind of man face image acquiring and image processing method, comprise the following steps:
The light signal of object is gathered by camera lens;
Adopt digital monitor images transducer that the light signal received is converted to analog electronic signal, then analog electronic signal is converted to digital signal carry out view data output through signal amplification, AD conversion, RGB coding step;
The viewdata signal of ISP image data processor to input is adopted to carry out aftertreatment, carry out the repairing of image bad point, gamma rectification, sharpness adjustment, color interpolation process to image, wherein said ISP image data processor also carries out the image control of white balance, exposure together with described digital monitor images transducer;
The picture signal of MJPG encoder to aftertreatment is adopted to encode;
The signal of USB encoder to coding is adopted to carry out the modulation of signal; And
By USB interface by coded data transmission to the information processing terminal.
Further, described lens focus is F=4.2mm, and described lens aperture is F/NO=1.8, and described angle lens is: level angle=50 °, vertical angle=39 °.
Further, described USB interface is USB2.0.
Further, described digital monitor images transducer comprises sensing chip.
Further, described sensing chip resolution is 1280*720, and described sensing chip dynamic range is >115DB.
Owing to adopting above technical scheme, beneficial effect of the present invention comprises:
1. lens focus shortens: the view data that more effectively can process face;
2. the aperture of camera lens becomes large: can make camera module all can image data effectively under different light rays environment;
3. image sensor chip resolution is high: the view data that more effectively can process face;
4. image sensor chip dynamic range is large: face can be made under complicated light illumination also to collect human face data.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of man face image acquiring of the present invention and image processing system.
Embodiment
For reaching fully disclosed object, below with reference to drawings and Examples, the present invention is described in further details.Should be appreciated that the specific embodiment of the following stated is only for explaining the present invention, is not intended to limit protection scope of the present invention.
As shown in Figure 1, the invention provides a kind of man face image acquiring and image processing system, comprising: camera lens, it is for being converted to light signal by object; Digital monitor images transducer, it is connected with described camera lens, for the light signal received is converted to analog electronic signal, then through steps such as signal amplification, AD conversion, RGB codings, analog electronic signal is converted to digital signal and carry out view data output; ISP image data processor, it is connected with described digital monitor images transducer, for carrying out aftertreatment to the viewdata signal of input, carry out the image procossing such as the repairing of image bad point, gamma rectification, sharpness adjustment, color interpolation, and carry out the image control of white balance, exposure together with described digital monitor images transducer; MJPG encoder, it is connected with described ISP image data processor, for encoding to the picture signal of aftertreatment; USB encoder, it is connected with described MJPG encoder, for carrying out the modulation of signal; And USB interface, it is connected with described USB encoder, for by information transmission to the information processing terminal.
In the above-described embodiment, described lens focus is F=4.2mm, and described lens aperture is F/NO=1.8, and described angle lens is: level angle=50 °, vertical angle=39 °.
In the above-described embodiment, described USB interface is USB2.0.
In the above-described embodiment, described digital monitor images transducer comprises sensing chip.
In the above-described embodiment, described sensing chip resolution is 1280*720, and described sensing chip dynamic range is >115DB.
Concrete technical data in above-mentioned embodiment is as follows:
| Lens focus | F＝4.2mm | Lens aperture | F/NO＝1.8 |
| Angle lens | Level angle=50 ° |
| Vertical angle=39 ° | |||
| Image compression | MJPG | ||
| Interface | USB2.0 | ||
| Spectrum assignment | Automatically | White balance controls | Automatically |
| Image resolution ratio | 1280*720 | ||
| Dynamic range | >115DB |
Use above-mentioned man face image acquiring and image processing system to carry out the method for man face image acquiring and image procossing, comprise the following steps: the light signal being gathered object by camera lens; Adopt digital monitor images transducer that the light signal received is converted to analog electronic signal, then through steps such as signal amplification, AD conversion, RGB codings, analog signal is converted to digital signal and carry out view data output; The viewdata signal of ISP image data processor to input is adopted to carry out aftertreatment, carry out the image procossing such as the repairing of image bad point, gamma rectification, sharpness adjustment, color interpolation, wherein said ISP image data processor also carries out the image control of white balance, exposure together with described digital monitor images transducer; The picture signal of MJPG encoder to aftertreatment is adopted to encode; The signal of USB encoder to coding is adopted to carry out the modulation of signal; And by USB interface by coded data transmission to the information processing terminal.
The above embodiment only have expressed embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. man face image acquiring and an image processing system, is characterized in that, comprising:
Camera lens, it is for being converted to light signal by object;
Digital monitor images transducer, it is connected with described camera lens, for the light signal received is converted to analog electronic signal, then analog electronic signal is converted to digital signal and carries out view data output;
ISP image data processor, it is connected with described digital monitor images transducer, for carrying out aftertreatment to the viewdata signal of input, and carries out the image control of white balance, exposure together with described digital monitor images transducer;
MJPG encoder, it is connected with described ISP image data processor, for encoding to the picture signal of aftertreatment;
USB encoder, it is connected with described MJPG encoder, for carrying out the modulation of signal; And
USB interface, it is connected with described USB encoder, for by information transmission to the information processing terminal.
2. man face image acquiring according to claim 1 and image processing system, is characterized in that, described lens focus is F=4.2mm, and described lens aperture is F/NO=1.8, and described angle lens is: level angle=50 °, vertical angle=39 °.
3. man face image acquiring according to claim 1 and image processing system, is characterized in that, described USB interface is USB2.0.
4. man face image acquiring according to claim 1 and image processing system, is characterized in that, described digital monitor images transducer comprises sensing chip.
5. man face image acquiring according to claim 4 and image processing system, is characterized in that, described chip resolution is 1280*720, and described sensing chip dynamic range is >115DB.
6. man face image acquiring and an image processing method, is characterized in that, comprises the following steps:
The light signal of object is gathered by camera lens;
Adopt digital monitor images transducer that the light signal received is converted to analog electronic signal, then analog electronic signal is converted to digital signal carry out view data output through signal amplification, AD conversion, RGB coding step;
The viewdata signal of ISP image data processor to input is adopted to carry out aftertreatment, carry out the repairing of image bad point, gamma rectification, sharpness adjustment, color interpolation process to image, wherein said ISP image data processor also carries out the image control of white balance, exposure together with described digital monitor images transducer;
The picture signal of MJPG encoder to aftertreatment is adopted to encode;
The signal of USB encoder to coding is adopted to carry out the modulation of signal; And
By USB interface by coded data transmission to the information processing terminal.
7. man face image acquiring according to claim 6 and image processing method, is characterized in that, described lens focus is F=4.2mm, and described lens aperture is F/NO=1.8, and described angle lens is: level angle=50 °, vertical angle=39 °.
8. man face image acquiring according to claim 6 and image processing method, is characterized in that, described USB interface is USB2.0.
9. man face image acquiring according to claim 6 and image processing method, is characterized in that, described digital monitor images transducer comprises sensing chip.
10. man face image acquiring method according to claim 9, is characterized in that, described sensing chip resolution is 1280*720, and described chip dynamic range is >115DB.
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| CN201510028179.6A CN104581078A (en) | 2015-01-20 | 2015-01-20 | Face image acquisition and processing system and method |
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| CN201510028179.6A CN104581078A (en) | 2015-01-20 | 2015-01-20 | Face image acquisition and processing system and method |
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| CN106210471A (en) * | 2016-07-19 | 2016-12-07 | 成都百威讯科技有限责任公司 | A kind of outdoor face recognition method and system |
| CN110906540A (en) * | 2019-12-27 | 2020-03-24 | 太仓思比科微电子技术有限公司 | Device for preventing water in compressed air from condensing |
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Application publication date: 20150429 |