Patent ID: 8774613
Filing Date: 2014-07-08
Classification: G06K,H04N

Abstract:
1. A latent fingerprint imaging system, comprising: a light source that illuminates a sample surface having a raw latent fingerprint, wherein the sample surface is at an ambient temperature; an optical detector arranged relative to the light source to capture fluorescence instantaneously upon illumination of the sample surface at the ambient temperature from gap portions of the sample surface between ridges of the latent fingerprint and to use the fluorescence from the gap portions to generate image data of the latent fingerprint on the sample surface; and wherein light from the light source has a wavelength that is greater than a propagation threshold wavelength such that the light is configured to propagate from the light source to the sample surface, and wherein the wavelength is less than an absorption threshold wavelength such that the light is mostly absorbed by material of the latent fingerprint on the sample surface.