Method for acquiring human-face image, human-face discrimination and discriminating system

Method for acquiring human-face image, human-face discrimination and discriminating system

CN
  • CN 1,898,678 A
  • Filed: 05/14/2004
  • Published: 01/17/2007
  • Est. Priority Date: 12/12/2003
  • Status: Active Application
First Claim
Patent Images

1. Claims1st, a kind of method that utilization facial image is identified, comprises the following steps:

  • Bu Sudden mono-, start Face Image Recognition System;

    Step 2, identifying system described in human body proximity, triggering active light source is irradiated to the face area of the human body;

    Step 3, imaging device is shot to the face area that the active light source shines, and obtains corresponding image;

    At least two field picture captured is reached image data processing system by step 4, the imaging device, and described image data handling system detects from the two field picture and positions human eye and/or face;

    Step 5, intercepts facial image, and carry out feature extraction to facial image from described image;

    Face image data carries out face characteristic contrast in step 6, with database;

    Step 7, obtains recognition result.2nd, the method being identified according to claim 1 using facial image, it is characterised in that described active light source is active radiation source, at least infrared light supply or visible light source or flash lamp, or its any combination.3rd, the method being identified according to claim 1 or 2 using facial image, it is characterized in that, in step 2 into step 4, also the face area of the human body is irradiated including environment light source, the active light source and environment light source are more than environment light source in the imaging energy produced by face position in the imaging gross energy produced by face part.4th, the method being identified according to claim 3 using facial image, it is characterised in that described active light source and environment light source is imaged 2 times of energy in the imaging gross energy produced by face position not less than environment light source produced by face position.5th, the method being identified according to claim 2 using facial image, it is characterised in that after step 4, also judge detection human eye and/or the whether successful Bu Sudden of face including one, if it succeeds, continuing executing with step 5, step 4 is otherwise performed.6th, the method being identified according to claim 1,2,4 or 5 using facial image, it is characterized in that, in step 4, also include detecting and positioning the anti-photogenic high bright spot of human eye in described image, and the step of positioning position of human eye is detected from described image using the high bright spot.7th, the method being identified according to claim 6 using facial image, it is characterised in that in Bu Sudden tri-, in addition to the imaging device with the active light source irradiation area track human faces the step of shot.8th, a kind of method that utilization active light source obtains facial image, it is characterised in that comprise the following steps:

    The human face region being taken is irradiated using an active light source;

    Face is shot using an imaging device, corresponding image is obtained, and described image is further sent to the identifying processing that corresponding image data processing system carries out facial image;

    Wherein, described active light source and environment light source are more than environment light source in the imaging energy produced by face position in the imaging gross energy produced by face position.9th, the method that the utilization active light source according to claim 8 obtains facial image, it is characterised in that:

    Described active light source and environment light source is imaged 2 times of energy in the imaging gross energy produced by face position not less than environment light source produced by face position.10th, the method that utilization active light source according to claim 8 or claim 9 obtains facial image, it is characterised in that:

    The active light source is fixed with the imaging device relative position, and the pick-up lens axis of the projecting direction of the active light source and the imaging device is in an acute angle, i.e., between 0-90 degree.11st, the method that utilization active light source according to claim 8 obtains facial image, it is characterised in that:

    Described active light source is active radiation source, at least infrared light supply or visible light source or flash lamp, or its combination.12nd, the method that the utilization active light source according to claim 11 obtains facial image, it is characterised in that:

    After image is gathered using active light source, described image data handling system detects high bright spot of the active light source in described image, and facial image is detected from described image using the high bright spot.13rd, a kind of Face Image Recognition System for realizing the methods described of claim 1 or 8, it is characterised in that including:

    Imaging device, active light source, controlling switch and image data processing system;

    The active light source, is irradiated for the face area to the human body;

    The controlling switch, for controlling active light source to be irradiated the face area of the human body;

    The imaging device, for being shot to the human face region that the active light source irradiates, obtains corresponding image, at least two field picture captured is reached into image data processing system;

    Described image data handling system, image for receiving the imaging device transmission, detected in described image and position human eye and/or face, face parts of images is intercepted from described image and carries out face characteristic extraction, and face characteristic contrast is carried out with face image data in database.14th, Face Image Recognition System according to claim 13, it is characterised in that still further comprise environment light source, is irradiated for the face area to the human body;

    Wherein, described active light source and environment light source are more than environment light source in the imaging energy produced by face position in the total energy of imaging produced by face position.15th, the Face Image Recognition System according to claim 14, it is characterized in that, the active light source is fixed with the imaging device relative position, and the pick-up lens axis of the projecting direction of the active light source and the imaging device is in an acute angle, i.e., between 0-90 degree.16th, the Face Image Recognition System according to claim 15, it is characterised in that the projecting direction of the active light source is parallel with the pick-up lens axis direction of the imaging device.17th, the Face Image Recognition System according to claim 15 or 16, it is characterised in that described active light source is active radiation source, at least infrared light supply or visible light source or flash lamp, or its any combination.18th, the Face Image Recognition System according to claim 17, it is characterised in that the wavelength of described infrared light supply be 740mn-4000 Surface, or in the wave-length coverage different wave length infrared light supply combination.19th, the Face Image Recognition System according to claim 14,15,16 or 18, it is characterized in that, when using infrared light supply as active light source, an infrared filtering eyeglass for being used to suppress visible ray is also added before the pick-up lens of the imaging device, the wavelength by wavelength of light and the infrared light supply of the infrared filtering eyeglass is adapted.20th, the Face Image Recognition System according to claim 19, it is characterised in that the infrared filtering eyeglass is bandpass-type or long logical cut-off type filter glass, passes through the infrared light actively irradiated to suppress visible ray.21st, the Face Image Recognition System according to claim 14,15,16,18 or 20, it is characterized in that, the pick-up lens surrounding edge of the imaging device is additionally provided with a facial image feedback display device, the feedback display device is used to aid in face to position in horizontal, the normal of the feedback display device and the pick-up lens axis coaxle.22nd, the Face Image Recognition System according to claim 21, it is characterised in that the feedback display device is mirror, or be a LCD Panel.23rd, the Face Image Recognition System according to claim 13 or 22, it is characterised in that the imaging device is electric video camera or digital camera.24th, the Face Image Recognition System according to claim 13, it is characterised in that described image data handling system is to be provided with image processing software and PC computers;

    Or be the data processor for being embedded with image processing software.25th, the Face Image Recognition System according to claim 13, it is characterised in that the controlling switch is the infrared switch of a triggering active light source illumination.26th, the Face Image Recognition System according to claim 13,14,16,17,18,19,20,22,24 or 25, it is characterised in that the active light source is symmetrically arranged at around the imaging device.

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