CPC Class H04N

A computing platform is described to match a palm print digital representation to a palm print template. The platform includes logic causing an illumination source to illuminate a field of view of a camera with an emission spectrum predominately in a wavelength range less than 485 nm; capturing a set of images using the camera of a palm during the illumination; processing the set of images to determine a set of identifying features of the palm according to intensity gradients in the wavelength range of the illumination source; and comparing the set of identified features with enrolled palm prints to identify the palm.

When writing information to the IC tag of a medium, the control unit 54 of a printer 1 determines if a specific area in the storage space of the IC tag is in an initialized state, and writes to the IC tag if the IC tag is in the specific state.

Introduced here are computer programs and associated computer-implemented techniques for determining reflectance of an image on a per-pixel basis. More specifically, a characterization module can initially acquire a first data set generated by a multi-channel light source and a second data set generated by a multi-channel image sensor. The first data set may specify the illuminance of each color channel of the multi-channel light source (which is configured to produce a flash), while the second data set may specify the response of each sensor channel of the multi-channel image sensor (which is configured to capture an image in conjunction with the flash). Thus, the characterization module may determine reflectance based on illuminance and sensor response. The characterization module may also be configured to determine illuminance based on reflectance and sensor response, or determine sensor response based on illuminance and reflectance.