US Patent 11363233 Optical frequency imaging

Frequency imaging of different areas or object in an image is created by a visible light, infrared or other cameras taking multiple sequential images is disclosed. The images are recorded and stacked. Pixels that vary in the images yield time varying data on a pixel by pixel basis. The time varying data is processed to extract pixel by pixel signal spectrum or another similar signal metric. Frequency at each pixel is displayed and distinguished, such as by recoloring the pixels based on spectral power rather than intensity contrast.