Fingerprint Sensing and Calibration Apparatus

An apparatus for capturing images of a fingerprint, comprising:

• a pixel panel having a surface configured to be touched by a fingerprint;
• a plurality of light sources for emitting light to the fingerprint;
• a plurality of sensor arrays for sensing scattered light from the fingerprint;
• a controller configured to generate control signals to:
• emit light from a set of light sources in the plurality of light sources to generate a scattered light from the fingerprint;
• determine a set of sensor arrays in the plurality of sensor arrays, located between an inner boundary and an outer boundary from the set of light sources, based on thickness and refractive index of one or more panels between the set of light sources and the fingerprint;
• activate the set of sensor arrays to capture the scattered light from the fingerprint;
• and
• process the scattered light captured by the set of sensor arrays in parallel to generate a topography of the fingerprint.