1. A computer-implemented method, comprising: performing, by one or more computing devices: examining metadata corresponding to each image in a collection of input images to determine information indicating how the respective input image was captured; estimating an image center for the respective input image based at least in part on unwarping functions that utilize the determined information and coordinates of matching feature points in two or more of the input images; directing workflow processing of the collection of input images according to the determined information for each of the input images including the respective estimated image center; and generating one or more output images from the collection of input images according to the workflow processing.