Patent ID: 8003928

Claim:
A method for compensating a plurality of sensors, the method comprising: exposing each of the plurality of sensors to a scene energy from a scene and obtaining a plurality of first outputs with each first output corresponding to a signal output from one of the plurality of sensors during a first time interval; exposing each of the plurality of sensors to the scene energy from the scene and a reference signal energy and obtaining a plurality of second outputs with each second output corresponding to the signal output from one of the plurality of sensors during a second time interval; exposing each of the plurality of sensors to a uniform signal energy and obtaining a plurality of third outputs with each third output corresponding to the signal output from one of the plurality of sensors during a third time interval; exposing each of the plurality of sensors to the uniform signal energy and the reference signal energy and obtaining a plurality of fourth outputs with each fourth output corresponding to the signal output from one of the plurality of sensors during a fourth time interval; obtaining a first reference output of a reference sensor during the first time interval; exposing the reference sensor to the reference signal energy and obtaining a second reference output of the reference sensor during the second time interval; obtaining a third reference output of the reference sensor during the third time interval; exposing the reference sensor to the reference signal energy and obtaining a fourth reference output of the reference sensor during the fourth time interval; and determining the scene energy received by each of the plurality of sensors relative to the reference signal energy from the first output, second output, third output, fourth output, first reference output, second reference output, third reference output, and fourth reference output.