A method and apparatus for selecting the best focal position of an image in a field of view is based upon pixel values located in the image that correspond to locations defining an invariant optical property of the image. In the preferred embodiment, the invariant optical property of the image are pixels...http://www.google.fr/patents/US5619032?utm_source=gb-gplus-shareBrevet US5619032 - Method and apparatus for automatically selecting the best focal position from a plurality of focal positions for a focusing apparatus
Method and apparatus for automatically selecting the best focal position ...
