Exposure control method for human face image acquisition system under near-infrared condition
A face image and exposure control technology, applied in the generation of 2D images, TV system components, image communication, etc., to achieve good brightness, reduce motion blur, and good visual effects
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[0021] The specific embodiments of the present invention will be further described below in conjunction with the drawings.
[0022] In this embodiment, the proposed exposure control method is applied to a face image acquisition system under near infrared conditions. Face image acquisition can collect near-infrared images of human faces by adding infrared light sources and infrared filters. This method effectively reduces the influence of external visible light on face images. Because the periodic flicker caused by visible lights due to alternating current is eliminated With the influence of the image, the exposure control method of the face image acquisition system under near-infrared conditions can be more flexible.
[0023] In this embodiment, after the image is acquired, the face location algorithm based on the Haar feature and the Adaboost algorithm is used to locate the face position in the image, the face image is intercepted, and the face image information entropy is used as...
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