1. A computer implemented method for analyzing a portion of the content of a digital image, comprising: identifying a digital image stored in a data storage area comprising a plurality of digital images; identifying a set of image processing instructions, wherein the image processing instructions carry out an analysis of the content of the digital image; retrieving a first sub-region of the digital image from the data storage area; executing the set of image processing instructions on the first sub-region; retrieving a second sub-region of the digital image from the data storage area; executing the set of image processing instructions on the second sub-region; analyzing the results of the image processing on the first sub-region and the second sub-region to provide an analysis of a portion of the digital image.