AutoCropper: Cropping Modes

There are two cropping modes: normal crop and fast crop. This document will illustrate the differences between them.
Normal Crop   Fast Crop
  • returns all pixels within a rectangular region defining the changing area from the reference image
  
  • returns an image containing only the pixels which have changed from the reference image
Pros & Cons   Pros & Cons
  • PRO: resultant image can be composited on the stage using the fastest ink mode, copy ink
  
  • PRO: resultant image typically is smaller (kb) than Normal Crop because only the differing pixels are contained
  • PRO: cropping process is faster
  • CON: cropping process is slower than Fast Crop
  
  • CON: cannot use copy ink with resultant image

Given a reference image and an image to crop:
reference image
reference image		   image to crop
image to crop

The final cropped image for each cropping type is as follows:
output of Normal Crop method
cropped using Normal Crop method		   output of Fast Crop method
cropped using Fast Crop method
If there are any questions about this document or how to use AutoCropper, please feel free to contact me.