A registration system for image data in a binary image path includes a
registration parameter source, such as a preprogrammed memory or a dynamic
device, which provides registration parameters to correct for registration
errors from a predetermined reference likely or predicted to occur during
image output. A warping processor is in data communication with the
registration parameter source which applies a selected registration
parameter to an element of the image data resulting in a warped data
element, minimizing the effects of the registration error. The system
optionally includes an image reducing device which receives groups of high
addressable binary image data and converts them to a single pixel. The
pixel is then provided to the warping processor. The warping processor
applies the selected registration parameter, either static or dynamically
selected, from the registration parameter source to the averaged single
pixel producing a warped data element. The warped data element is then
optionally provided to a tone reproduction curve calibrator which adjusts
for darkness errors induced by the warping or displacement of the warped
data element. The calibrated pixel is then re-rendered by a processor
which processes the calibrated pixel back into a plurality of print-ready
data elements. The processor estimates quantization errors induced by the
warping of the pixel positioning and disperses that error to following
pixels. The print-ready data elements are provided to an image output
terminal which produces a physical representation of the original binary
image.
