Oliff & Berridge, PLC
Focusing measurement device, focusing measurement method, and program
A focusing measurement device according to the present application includes an image input section that obtains a captured image; a filter section that generates, with respect to the image, blurred images by using each pair of filters having different frequency characteristics; an extracting section that extracts, at each of specific points on the image, a first feature quantity and a second feature quantity both from the image and the respective blurred images; and a focusing measurement section that calculates, from the first feature quantity and the second feature quantity, a focusing amount indicating a degree of in-focus to measure a focusing level at each of the specific points on the image.
Nikon Corporation
G G H H H
G03B G02B H04N H04N H04N
inventional inventional additional additional inventional
Tsukasa
Murata