Patent ID: 9560292
Date: 2017-01-31
CPC Classifications: A61B,F04C,H04N

Claim:
1. A frame-sequential multiwavelength imaging system, comprising: a wavelength switching device comprising a plurality of light sources, the light sources producing a repeated series of different wavelength profiles, each wavelength profile being sequentially applied to a dynamic scene, the repeated series having a period of repetition, wherein the plurality of light sources produces at least one wavelength profile within each of a range of visible wavelength profiles and a range of near-infrared wavelength profiles, and wherein the fraction of the period of repetition that the at least one wavelength profile within the range of near-infrared wavelength profiles is applied is greater than the fraction of the period of repetition that the at least one wavelength profile within the range of visible wavelength profiles is applied; a detector that operates to detect a field of view of the dynamic scene and produce a dynamic output signal, the dynamic output signal comprising sequential frames, the sequential frames comprising image data representing the dynamic scene and corresponding to the repeated series of different wavelength profiles, the sequential frames further corresponding to a series of exposures of the detector to the dynamic scene, each exposure having a time interval between a start time and a stop time; and a signal processing unit, connected to the detector, for synthesizing a dynamic multiwavelength image of the dynamic scene, the dynamic multiwavelength image comprising a plurality of channels, each channel comprising image data corresponding to a different wavelength profile, the signal processing unit comprising: