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Face recognition method and face recognition device

A face recognition and face image technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as excessive dependence on natural environment lighting, improve the accuracy of face recognition, and improve the efficiency of face recognition , the effect of improving quality

Active Publication Date: 2016-10-26
HANVON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a face recognition method and a face recognition device to solve the problem of excessive reliance on natural environment lighting for face images captured by existing electronic equipment

Method used

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  • Face recognition method and face recognition device

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Experimental program
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Embodiment 1

[0026] This embodiment provides a face recognition method, which is applied to an electronic device with a display screen, such as figure 1 As shown, the face recognition method includes steps 10 to 13. The electronic device may be a mobile phone, a PAD, a tablet computer, a face recognition machine, and the like.

[0027] Step 10, after detecting that the camera of the electronic device is on, adjust the brightness value of the display screen to a maximum value.

[0028] Before performing face recognition, it is first necessary to detect whether the camera is turned on, so as to collect face images through the camera. During specific implementation, the status information of the camera can be read through the system interface of the electronic device, or the data of the control register of the camera can be read directly, so as to determine whether the camera is in an on state. When the camera is in the off state, firstly, the camera is turned on through the system interfac...

Embodiment 2

[0040] see figure 2 , in another embodiment of the face recognition method of the present invention, the method includes step 20 to step 25.

[0041] Step 20, after detecting that the camera is turned on, adjusting the brightness value of the display screen to a maximum value.

[0042] After detecting that the camera is turned on, the specific implementation method of adjusting the brightness value of the display screen to the maximum value refers to the relevant steps in Embodiment 1, which will not be repeated here.

[0043] Step 21, collecting face images in front of the display screen.

[0044]For the specific implementation method of collecting the face image in front of the display screen, refer to the relevant steps in Embodiment 1, which will not be repeated here. Since the brightness value of the display screen has been adjusted to the maximum value, the light emitted by the display screen shines on the face in front of the display screen, playing the role of suppl...

Embodiment 3

[0082] Correspondingly, such as Figure 4 As shown, the present invention also discloses a face recognition device, which is applied to electronic equipment with a display screen, and the device includes:

[0083] A brightness adjustment module 40, configured to adjust the brightness value of the display screen to a maximum value after detecting that the camera is in an open state;

[0084] An image acquisition module 41, configured to acquire the face image in front of the display screen after the brightness adjustment module 40 has adjusted the brightness;

[0085] Judgment processing module 42, for judging whether the face image collected by the image acquisition module 41 meets the requirements of face recognition, if not, the face image is subjected to nonlinear transformation processing to obtain a person meeting the face recognition requirements face image;

[0086] The face recognition module 43 is configured to recognize the face image that meets the face recognitio...

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Abstract

The invention provides a face recognition method and belongs to the biological feature recognition field. With the method adopted, the problem of low efficiency of face recognition in the prior art can be solved. The method includes the following steps that: after it is detected that a camera is in a turned-on state, the brightness of a display screen is adjusted to a maximum value; a face image before the display screen is acquired; whether the face image meets a face recognition requirement is judged, if the face image does not meet the face recognition requirement, nonlinear transformation processing is performed on the face image, so that a face image meeting the face recognition requirement can be obtained; and the face image meeting the face recognition requirement is recognized. According to the face recognition method of the invention, when an electronic device is in a photographing mode, the brightness of the display screen is automatically adjusted to the maximum value, so that adequate illumination can be provide for face photographing, and therefore, face recognition efficiency can be improved; and the nonlinear transformation processing is performed on the face image, and therefore, the quality of the obtained face image can be improved, and face recognition accuracy can be improved.

Description

technical field [0001] The invention relates to the field of biological feature recognition, in particular to a face recognition method and a face recognition device. Background technique [0002] Biometric identification technology is widely used in various fields of life. Among them, face recognition technology is the most widely used because of its convenient feature collection and hygienic characteristics. In the prior art, the process of face recognition usually includes several steps of image acquisition, image processing, feature extraction and face recognition. Among them, the image acquisition step is used to obtain the face image; the image processing step is used to perform preprocessing such as denoising and face alignment on the face image; the feature extraction step is used to extract the person in the pre-processed image according to a preset model. Face features; the face recognition step is used to identify the extracted face features based on the preset f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/166G06V40/172G06V40/168
Inventor 黄磊蔡利君刘昌平张健
Owner HANVON CORP
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