An automated method of generating sets of image processing instructions that identifies a region of picture elements for processing and a region of picture elements to be produced is described. The method receives a first set of image processing instructions for performing a transform operation, and, for the first set of image processing instructions, produces a second set of image processing instructions that identify a region of picture elements for processing from an input image and a third set of image processing instructions that identify a region of picture elements to be produced in an output image. The method associates the second and third sets of image processing instructions with the first set of image processing instructions, the association allowing the execution of the second and third sets of image processing instructions at run-time to facilitate the execution of the first set of image processing instructions.