Integrated reference pixel

摘要

Representative implementations of devices and techniques provide dynamic calibration for imaging devices and systems. A reference pixel is arranged to receive an electrical reference signal and to output a calibration signal. The reference signal may be based on imaging illumination.

主权项

1. An imaging system, comprising:
a sensor module, including a plurality of photosensitive pixels, to capture an image of an area, and at least one reference pixel to:
receive an electrical reference signal,
the electrical reference signal being an electrical representation of an optical signal that corresponds to light radiation emitted by an illumination module,mix the electrical reference signal with an electrical modulation signal in order to form a calibration signal,
the electrical modulation signal being associated with modulating an illumination of the area, andoutput the calibration signal,
the calibration signal being output in order to calibrate the imaging system.