IMAGE PICKUP APPARATUS HAVING AUTO FOCUSING FUCTION USING FRACTAL DIMENSION AND THE AUTO FOCUSING METHOD

摘要

PURPOSE: An image pickup apparatus having an auto focusing function and a method thereof are provided to exactly judge an auto focusing target image using a fractal dimension. CONSTITUTION: A color difference extractor(121) extracts a color difference information by a photographed image pixel of an imaging unit(110). A fractal dimension generator(123) generates a fractal dimension value. If the fractal dimension value exceeds a preset threshold value, an AF(Auto Focus) control determination unit(124) outputs AF control signal to an AF control unit(130). According to the auto focusing signal, the automatic focusing device controls the focus of the imaging unit.