System and method for laser based ingernal analysis of gases in a body of a human

Abstract

This invention offers a kind of one that is not influenced by surface state of fingerprint and can receive the stable fingerprint picture, can improve personal individual identification equipment and fingerprint picture of recognition performance, shoot the method. Personal identification equipment this possess, can keep, have to check into to check into the body, keep the component (2) while being diaphanous body fingerprint in that fingerprint is exposed to condition; Keep in check into body, keep to check at the body while being above-mentioned component while being above-mentioned in that the above-mentioned fingerprint contacts condition, it can be the photic light source (3) of checking the body through being above-mentioned to illuminate; Sensitization has seen through the light in the concave recess through the light sum of the projection of the above-mentioned fingerprint, get the shooting unit (4) of the bright fingerprint picture of dim above-mentioned concave recess of above-mentioned projection; According to shooting personal signal processing unit (5) of image identification of fingerprint that the unit outputted from this, in addition, in to check at the body it illuminates to be can through check into light of body while being above-mentionedding fingerprint of having, get it with the fingerprint picture that light transmission of internal corresponded to near the above-mentioned surface of fingerprint which is checked the body.

Dependencies are inferred from the claim text.