公开(公告)号：US20080095412A1

公开(公告)日：2008-04-24

申请号：US11661865

申请日：2005-09-13

申请人： Ichiro Fujieda ,  Katsuki Tai

发明人： Ichiro Fujieda ,  Katsuki Tai

IPC分类号： G06K9/00

CPC分类号： G06K9/00107 ,  A61B5/0059 ,  A61B5/02007 ,  A61B5/1172

摘要： The present invention intends to provide a method for liveliness detection and fitness measurement using information optically extracted from a fingertip. For liveliness detection, the present method examines the change in a color index of a finger at its touching portion measured while the finger is being pressed onto an inspection surface and while the finger is released from the same surface. If the change is equal to or larger than a predetermined value, the finger is regarded as a live finger. For fitness measurement, an index indicative of the stiffness of the blood vessel of the finger is obtained from the change in the color index of the finger at its touching portion against the change in the contact area of the finger while the finger is being pressed onto the inspection surface.

摘要翻译： 本发明旨在提供使用从指尖光学提取的信息的活力检测和适应度测量的方法。 对于活力检测，本方法检查手指在被按压到检查表面上以及当手指从相同表面释放时测量的触摸部分处的手指的颜色指数的变化。 如果改变等于或大于预定值，则将手指视为活的手指。 对于健身测量，指示手指在其触摸部分处的手指的颜色指数随着手指被按压到手指的接触面积的变化的变化而获得指示手指的血管的刚度的指标 检查面。