Abstract: A system and method utilizing two image sensors to simultaneously capture images of a FOV (field of view). The image sensors are arranged along the same optical path for viewing the FOV. The FOV is illuminated by an illuminator of a specific frequency band. An image is captured by the first image sensor which has a filter that passes at least a portion of the light of the frequency band of the illuminator. An image is captured by the second image sensor that has a filter to pass a band of frequencies adjacent to, but generally not including the frequency band of the illuminator. The images may be manipulated, for example, to provide enhanced performance and/or compensate for variables in the system. A processor subtracts the images to produce an image that represents light reflected back from the illuminator, excluding ambient light at the frequency of the illuminator.
Type:
Application
Filed:
February 8, 2012
Publication date:
August 9, 2012
Applicant:
DORNERWORKS, LTD.
Inventors:
Curtis W. Stienstra, Albert A. Cornelius, Todd M. Burghgraef, Nathan S. Meyer, Steven H. VanderLeest