1. A method of establishing device settings, comprising: determining luminance and chrominance values of pixels representing a document; identifying a first characteristic of the document as either a text document or a photograph based at least in part on the luminance values, comprising calculating a standard deviation of the luminance values of a percentage of pixels falling within a predetermined range of luminance values, and determining the first characteristic based upon the calculation; identifying a second characteristic of the document as substantially black and white or substantially color based at least in part on the chrominance values, comprising calculating a standard deviation of the chrominance values of the pixels and determining the second characteristic based upon the calculation; and specifying settings of an imaging device based at least in part upon the first and second characteristics.