Improved face image comparison method

An improved portrait technology, applied in the field of portrait comparison, can solve the problem that the robot face comparison system cannot achieve multi-angle face image comparison, so as to speed up the detection speed and improve the comparison accuracy

Inactive Publication Date: 2016-04-06
天津汉光祥云信息科技有限公司
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Problems solved by technology

[0004] In order to solve the problem that the robot face comparison system mentioned in the background technology cannot use multi-angle face image comparison, the present invention provides an im

Method used

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  • Improved face image comparison method

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Embodiment

[0029] Embodiment: a kind of improved portrait comparison method, this method comprises the steps:

[0030] S1, for holographic photography: the trinocular holographic camera installed on the security gate is used to obtain high-definition RGB images and face depth information data;

[0031] S2, performing depth data filtering on the hologram;

[0032] S3, for utilizing Viola-Jones method to carry out face detection, utilize threshold method to do face segmentation again;

[0033] S4, for face tracking and point cloud registration, to obtain a complete 3D face image model;

[0034] S5, synthesizing multi-pose and multi-illumination images to obtain a frontal pose face image;

[0035] S6, extracting key features;

[0036] S7, for feature comparison and personnel identification;

[0037] S8. Facial age deduction: if the result data of person recognition after the feature comparison is not ideal, then use the facial age deduction for the virtual generated face.

[0038] Furt...

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Abstract

The invention, which belongs to the technical field of face image comparison in criminal investigation, especially relates to an improved face image comparison method. The method is characterized in that the method comprises: S1, holographic shooting is carried out; S2, depth data filtering is carried out on the holographic picture; S3, face detection is carried out by using a Viola-Jones method and face segmentation is carried out by using a threshold method; S4, face tracking and point cloud registration are carried out to obtain a complete 3D face image model; S5, multi-attitude multi-illumination image synthesis is carried out to obtain a front attitude face image; S6, key feature extraction is carried out; S7, feature comparison is carried out to realize person identification; and S8, face age deduction is carried out. Therefore, the restriction that the face inclination degree of the image employed by the machine face comparison system must be less than 15 degrees can be broken; and omnibearing face image comparison can be carried out at multiple angles. Compared with the prior art, the provided method enables the comparison condition and requirement to be relaxed substantially and the comparison accuracy to be improved substantially.

Description

technical field [0001] The invention belongs to the technical field of portrait comparison in criminal investigation, and in particular relates to an improved portrait comparison method. Background technique [0002] Since the public security organs carried out video image investigation, with the development of machine vision technology, computer face comparison has gradually replaced manual comparison, and the speed has also been greatly improved. Face comparison technology using facial screenshots in videos has always been an important investigative approach to identify criminal suspects and obtain non-image information (such as name, home address, work unit, etc.) of suspects. The early method was to intercept the suspect's profile picture from the video, and then manually compare and screen it in the "National Basic Population Information Resource Base" to obtain other information about the suspect. However, using computer technology to carry out face comparison technol...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/62G06T7/00
CPCG06T2207/10028G06V20/653G06V40/166G06F18/2411
Inventor 骆宏路大为朱爱民康尽善王平张丽
Owner 天津汉光祥云信息科技有限公司
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