1. A method comprising: determining a plurality of differences in intensity comprising a difference in intensity between each pixel intensity of a plurality of pixel intensities of a first image and each pixel intensity of a corresponding plurality of pixel intensities of a subsequent second image; generating a delta image comprising the plurality of differences in intensity; and visually rendering, for each subsequent comparison, an integrated delta image comprising a second plurality of differences, the second plurality of differences comprising the differences between the plurality of differences of the delta image and the subsequent plurality of differences of the subsequent delta image, wherein a visual contrast of the integrated delta image is enhanced to accentuate a characteristic associated with the integrated delta image.