Thermal infrared face recognition method and system

Abstract

The invention discloses a thermal infrared face recognition method and system. The method comprises the steps of determining a thermal infrared image of a to-be-recognized face; inputting the thermalinfrared image of the to-be-recognized face into a trained three-function component extractor, positioning eyes, a nose and a mouth of the face in the image, and performing region positioning on the left eye, the right eye, the nose and the mouth to form a corresponding key area group; according to the difference between the key area group of the standard face and the key area group of the to-be-recognized face, affine transformation is carried out on the thermal infrared image of the to-be-recognized face, acquiring a thermal infrared image after face alignment calibration; inputting the thermal infrared image after face alignment calibration into a trained face feature extractor, and extracting corresponding face features; and inputting the extracted face features into a trained classifier, and identifying information of a person to which the classifier belongs. According to the invention, the human face can be recognized under the condition of no light source, and the recognition rate is high.

Description

technical field [0001] The invention belongs to the field where biometric feature recognition intersects with infrared technology, and more specifically relates to a thermal infrared face recognition method and system. Background technique [0002] Face recognition, that is, for a thermal infrared image of a face, the label or name of the corresponding face can be known. Visible light face recognition has been widely used in customs, stations, attendance, automatic driving and suspect tracking and other fields. However, the face recognition technology of visible light cannot work without external light sources, such as night without external light sources. As a result, it is impossible to track suspects at night; if there is no external light source, visible light face recognition of community gates cannot be performed. like figure 1 ,in figure 1 (a) and (b) are visible light images with and without light, respectively. figure 1 (c) and (d) are thermal infrared images w...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the defects of the prior art, the purpose of the present invention is to provide a face recognition method and system of thermal infrared images, aiming to solve the problem that the existing visible light face recognition cannot be performed without external light sources, and the active near-infrared face recognition technology Restricted by the distance and the thermal infrared image of the face is a single-channel grayscale image with poor clarity, it is a technical problem that the direct punctuation method for thermal infrared face recognition cannot be realized

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