A METHOD AND DIGITAL IMAGING APPLIANCE FOR SELECTING A FOCUS SETTING WITH A NORMALIZED FIGURE-OF-MERIT

摘要

A method for selecting a focus setting for a digital image acquisition appliance, the method comprising: acquiring at least two images, the images being acquired with different focus settings; calculating a figure-of-merit for each of the images; calculate a normalization constant using the figure-of-merit calculated for each of the images; calculating a normalized figure-of-merit for each of the images by dividing the figure-of-merit of each image by the normalization constant; selecting the focus setting using the normalized figure-of-merit for each of the images and a predetermined selection criteria.