1. A computer-implemented method comprising: selecting, in a processor, a subset of images from a set of captured images, wherein a surface feature of a first object is represented in content of the selected image subset; producing a model, at a first time, of at least one representation of the first object by decomposing the content of the selected image subset into principal components; using the model to track surface features in at least one image that is separate from the selected image subset used to produce the model, wherein tracking the surface features provides an estimate of the surface features represented in the at least one image that is separate from the selected image subset used to produce the model; and combining with the model, at a second time, content that represents the estimated surface features from the tracked surface features of the at least one separate image by decomposing content into principal components to produce an enhanced model of additional representations.