Abstract: A site measuring device (1) for ascertaining a geometric measurement value, having an image capturing device with a fisheye lens (5) and a planar image sensor (6) for capturing an image of the lens (5), and an image processor.

Abstract: A contact-free biometric identification apparatus includes a housing, a first light-emitting diode (LED) positioned in the housing having a first predetermined wavelength to illuminate a portion of skin, a second LED positioned in the housing having a second predetermined wavelength to illuminate the portion of skin, an irradiation location outside of the housing and defined by illumination from the first and second LED on the portion of skin, a detector at a predetermined position in the housing for detecting a fraction of the first and second LED light scattered from the irradiation. location and a processing unit that employs a scatter function to determine the presence of live skin based on a correspondence of the detected light to stored data of optical properties of skin.

Abstract: The invention relates to a method for the recognition of natural skin (5), wherein the skin surface (4) is illuminated at an irradiation point (1) with light from the visible spectrum or the adjacent spectrum, wherein that part of the light entering through the skin surface (4) at the irradiation point (1), scattered in the skin (5), and exiting from the skin surface (4) again, is detected at a detection point (9), using a detector (20), and wherein the signal determined by the detector (20) is passed to a comparator and compared with stored data. Furthermore, a device for carrying out the method is an object of the invention.

Abstract: The invention relates to a method for the recognition of natural skin (5), wherein the skin surface (4) is illuminated at an irradiation point (1) with light from the visible spectrum or the adjacent spectrum, wherein that part of the light entering through the skin surface (4) at the irradiation point (1), scattered in the skin (5), and exiting from the skin surface (4) again, is detected at a detection point (9), using a detector (20), and wherein the signal determined by the detector (20) is passed to a comparator and compared with stored data. Furthermore, a device for carrying out the method is an object of the invention.

Abstract: The invention relates to a method for the recognition of natural skin (5), wherein the skin surface (4) is illuminated at an irradiation point (1) with light from the visible spectrum or the adjacent spectrum, wherein that part of the light entering through the skin surface (4) at the irradiation point (1), scattered in the skin (5), and exiting from the skin surface (4) again, is detected at a detection point (9), using a detector (20), and wherein the signal determined by the detector (20) is passed to a comparator and compared with stored data. Furthermore, a device for carrying out the method is an object of the invention.

Abstract: The invention relates to a method for the recognition of natural skin (5), wherein the skin surface (4) is illuminated at an irradiation point (1) with light from the visible spectrum or the adjacent spectrum, wherein that part of the light entering through the skin surface (4) at the irradiation point (1), scattered in the skin (5), and exiting from the skin surface (4) again, is detected at a detection point (9), using a detector (20), and wherein the signal determined by the detector (20) is passed to a comparator and compared with stored data. Furthermore, a device for carrying out the method is an object of the invention.

Abstract: A process for reproducing hand and/or finger lines with a camera works without skin contact with the recording device. By using linearly or circularly polarized light in the paths of the illuminating and the reproducing light rays, it is possible to obtain separate representations of the patterns of the epidermis and the hypodermis. An image of the relief of the skin that is rich in contrast is obtained in this way, and it is possible to acquire information from the deeper disposed layers of the skin already supplied with blood. An algorithm searches the skin patterns of the palm of the hand for line elements of different strengths and directions (vectors). The computed numerical identification contains overall frequencies of vectors as well as amplitudes and phases of frequency components of projections of the vector image of both patterns.