1. A method comprising the acts: identifying at least first and second different, alternate operations, either of which operations can yield output data of a desired functional type when applied to first input data, the first input data comprising data derived from camera-captured imagery; determining a first score for the first operation, said first score depending on at least two parameters; determining a second score for the second operation, the second score depending on at least two parameters; and identifying, from said determined scores, one of said alternate operations to be used; wherein said determining acts are performed by a hardware processor configured to perform such acts.