1. A method of evaluating a bi-chrome digital image generated by an imaging device, the method comprising: generating an image with a hand-held imaging device, the image having pixels of a first color and a second color; determining information about particles of the first and second color contained in the image, each particle comprising contiguous pixels of the same color, the particle information comprising information on first and second color particle size; developing values from the particle information, the values corresponding to the count of first color particles of at least one selected size and the total area of first color particles of the at least one selected size; and determining if the image is unacceptable based on predetermined objective criteria and the values.