Patent ID: 6700618
Filing Date: 2004-03-02
Classification: H04N

Abstract:
An automatic focus-detecting apparatus which detects a focus point according to high-frequency components in images at a plurality of focusing points; said apparatus comprising:a high-frequency component extracting unit which extracts a high-frequency component included in the picked-up image; a first clipping unit which removes a component equal to or less than a first threshold value from the high-frequency component and outputs the rest of the high-frequency component; a second clipping unit which removes a component equal to or less than a second threshold value which is larger than the first threshold value from the high-frequency component and outputs the rest of the high-frequency component; a first integrating unit which integrates the output of said first clipping unit in order to compute an integrated value; a second integrating unit which integrates the output of said second clipping unit in order to compute an integrated value; and a computing unit which detects the focus point according to a selected one of the integrated values obtained in said first integrating unit and said second integrating unit.