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Face photo quality evaluation method, system and device and storage medium

A quality assessment and photo technology, applied in the field of face recognition, can solve problems such as defocus blur, motion blur, and deterioration of face image quality, and achieve the effect of improving the recognition rate

Inactive Publication Date: 2020-05-15
苏州纳智天地智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a method, system, device and storage medium for evaluating the quality of human face photos, which solves the problems of motion blur, defocus blur, etc. Face, low light or backlight environment, a certain degree of occlusion, face blurring and other actual complex environment caused by the deterioration of the face image quality, so that the face recognition system cannot recognize the face image or recognize the wrong problem

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  • Face photo quality evaluation method, system and device and storage medium
  • Face photo quality evaluation method, system and device and storage medium

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Embodiment 1

[0057] An embodiment of the present invention provides a method for evaluating the quality of a face photo, such as figure 1 As shown, the execution subject of each step in the following method embodiments can specifically be various devices with a face photo quality assessment function, such as: mobile phones, personal computers, PADs, access control equipment, etc., and the method can specifically include the following steps:

[0058] Step S101, evaluate the image quality of the face image, and obtain a plurality of preliminary evaluation coefficients, wherein the above evaluation coefficients include contrast evaluation coefficients, brightness evaluation coefficients, and sharpness evaluation coefficients, all of which are between 0-1.

[0059] The aforementioned face image to be recognized can be obtained from the terminal device through which the user performs identity verification through a wired connection or a wireless connection.

[0060] Specifically, quality evalua...

Embodiment 2

[0089] An embodiment of the present invention provides a kind of facial photo quality assessment system, such as figure 2 As shown, the system of face photo quality assessment in this embodiment is a specific subject that performs the above-mentioned face photo quality assessment method, and the system may specifically include the following modules:

[0090] The local evaluation module is used to evaluate the image quality of the face image and obtain a plurality of preliminary evaluation coefficients, wherein the above evaluation coefficients include contrast evaluation coefficients, brightness evaluation coefficients, and sharpness evaluation coefficients, all of which are between 0-1.

[0091] Specifically, quality evaluation is performed on the above-mentioned face image in terms of contrast, brightness, and sharpness, respectively, to obtain the corresponding above-mentioned contrast evaluation coefficients, the above-mentioned brightness evaluation coefficients, and the ...

Embodiment 3

[0114] An embodiment of the present invention provides a kind of human face photo quality evaluation equipment, such as image 3 As shown, the face photo quality assessment device can also optionally include modules such as a camera to obtain the original face image, and the device can specifically include the following modules:

[0115] The communication bus is used to realize the connection and communication between the processor and the memory;

[0116] The memory is used to store computer programs; the memory may include a high-speed RAM memory, and may also include a non-volatile memory, such as at least one disk memory. The memory may optionally comprise at least one storage device.

[0117] A processor, configured to execute the above computer program to achieve the following steps:

[0118] Step S201, evaluate the image quality of the face image, and obtain a plurality of preliminary evaluation coefficients, wherein the evaluation coefficients include contrast evalua...

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Abstract

The invention discloses a face photo quality evaluation method, system and device and a storage medium, and the method comprises the steps: evaluating image quality of a face image to acquire a plurality of preliminary evaluation coefficients; according to the weight of each preliminary evaluation coefficient, weighting each corresponding preliminary evaluation coefficient to obtain a weighted evaluation value of the face image; and performing feature extraction on the face image to obtain a feature evaluation value, and performing final quality evaluation on the image quality of the face image according to the feature evaluation value. The problem that a face recognition system cannot recognize a face image or is wrong in recognition due to the fact that the quality of the face image becomes poor in various actual complex environments is solved, and the recognition rate of face recognition is greatly increased.

Description

technical field [0001] The present invention relates to the technical field of face recognition, in particular to a method, system, device and storage medium for evaluating the quality of a face photo. Background technique [0002] Facial Recognition (Facial Recognition) is a computer technology that uses the analysis and comparison of facial feature information of human faces for identity recognition. Face recognition has high practical value due to its advantages of non-contact, basically no cooperation, and strong concealment of operation, and is considered to be a widely used biometric identification technology. [0003] Face recognition is an important research field in biometric recognition technology. It covers image processing, neural network, psychology, physiology, artificial intelligence, pattern recognition, computer vision and artificial intelligence. The development of the field is of great significance both in theory and in practice. Face recognition technol...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/161G06V40/168
Inventor 迟振
Owner 苏州纳智天地智能科技有限公司
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