Patent ID: RE43089

Claim:
An imaging system comprising: an imager that forms an electronic image of an object in a field of view; a rotationally symmetric lens assembly disposed between the imager and the object, the lens assembly providing increased collection efficiency for a desired depth of field, whereby the lens assembly causes aberration, compared to a well-focused lens; and a signal processor connected to the imager, wherein the signal processor receives image data and generates a virtual scan line signal comprising samples taken from a line across the image, wherein the signal processor comprises: a non-uniform scaler that receives the virtual scan line signal and scales samples in the virtual scan line signal to generate a non-uniformly scaled virtual scan line signal; and an equalizer that receives the non-uniformly scaled virtual scan line signal and equalizes the non-uniformly scaled virtual scan line signal so as to at least partially compensate for the aberration caused by the lens assembly.