BLINK SIGNAL DETECTION CIRCUIT, BLINK SIGNAL DETECTION METHOD, OBJECT SENSING APPARATUS, OBJECT SENSING METHOD, AND IMAGING SYSTEM

摘要

There is provided a blink signal detection circuit which can clearly detect a blink signal of a blinking measurement target even if the measurement target moves. The blink signal detection circuit includes: a plurality of storage media that record image information shot by an imaging device at respective times, the image information showing a light-dark change in brightness of the measurement target which is blinking; an image information enlargement unit (pixel information enlargement circuit) that enlarges a plurality of pieces of image information at the respective different times with reference to a spatial axis, thereby generating a plurality of pieces of enlarged image information at the respective different times; and a correlation detection unit (correlation integration circuit) that performs correlation detection between the plurality of pieces of enlarged image information at the respective different times. The blink signal detection circuit detects the blink signal of the measurement target from a result of correlation detection obtained by the correlation detection unit.