1. A method for determining a translation offset between a first digital image and a second digital image, the method comprising: receiving, by one or more computers, a first plurality of first feature points, each first feature point being associated with a plurality of feature descriptors and a respective location on the first digital image; receiving, by the one or more computers, a second plurality of second feature points, each second feature point being associated with a plurality of feature descriptors and a respective location on the second digital image; and determining, by the one or more computers, the translation offset for the second digital image from the first digital image by matching locations of the first feature points with locations of the second feature points including comparing coordinates of the respective feature points without regard to the content of the corresponding feature descriptors.