US Patent 7702232 Dynamic focus zones for cameras

Systems and methods of implementing dynamic focus zones for cameras are disclosed. In an exemplary implementation, a method may include selecting a reference image from a scene being photographed. The method may also include selecting a plurality of difference images from regions adjacent the reference image. The method may also include comparing the reference image and the plurality of different images. The method may also include selecting a plurality of distinct focus zones based on correlation of the compared reference image and the plurality of difference images.