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    DETECTION OF VITAL SIGNS FROM IMAGES
    4.
    发明公开
    DETECTION OF VITAL SIGNS FROM IMAGES 审中-公开

    公开(公告)号：EP4353143A1

    公开(公告)日：2024-04-17

    申请号：EP22201161.1

    申请日：2022-10-12

    申请人： Koninklijke Philips N.V.

    发明人： COEZIJN, Etienne René Eveline ,  ROCQUE, Mukul Julius ,  VAN DALFSEN, Age Jochem

    IPC分类号： A61B5/00 ,  G06T7/00 ,  A61B5/024 ,  A61B5/08

    CPC分类号： A61B5/0077 ,  G06T7/0012 ,  A61B5/02444 ,  A61B5/0816 ,  A61B2505/0120130101 ,  A61B2505/0720130101 ,  A61B2576/0020130101

    摘要： An apparatus estimates vital signs of a person from video images with color channels representing a digitization of optical sensor signals. A first detector (203) detects a first image area being a skin area of the person and a second detector (205) detect a second image area corresponding to a different area of the person than the first image area. A determiner (207) determines color channel distributions for pixels of the first image area. A processor (209) provides a skin tone indication and a reference processor (211) provides a reference color channel distribution property for the skin tone. A gain processor (213) determines gains for the optical sensor signals in dependence on a luminance property of the second image area and on a comparison of the reference distribution property and a property of the color channel distributions. A gain controller (215) accordingly controls gain values applied to the optical sensor signals and a vital sign determiner (217) estimates a vital sign property for the person from the images.