17. The non-transitory computer-readable storage medium of claim 16 , wherein the instructions, when executed by the processor, further cause the computing device to: determine a relative motion of the first portion of the object over a period of time between capture of the first image data and capture of the second image data.
18. The non-transitory computer-readable storage medium of claim 17 , wherein the instructions, when executed by the processor, further cause the computing device to: determine the relative motion of the first portion of the object by analyzing at least one of a separation, a shape, or a size of the first portion of the object relative to one or more features represented in the second image data.