An imaging device (10, 20) comprising: a first imaging unit and a second imaging unit that are configured to capture an object; a detection unit that is configured to detect a blinking object or an object lit by a blinking illuminator; a tracking unit that is configured to perform tracking on the detected object; an estimation unit that is configured to estimate period information of the blinking, on a basis of a plurality of imaging frames of the tracked object; and a signal generation unit that is configured to generate a timing signal for capturing the object, on a basis of an estimation result, wherein the first imaging unit is configured to capture images at a first frame rate, the second imaging unit is configured to capture images at a second frame rate lower than the first frame rate, the estimation unit is configured to estimate at least one of a frequency, a lighting time, or a lighting interval of the blinking, on a basis of changes in brightness of the object in a plurality of imaging frames of the object acquired at the first frame rate, and the signal generation unit is configured to generate a timing signal to control timing of exposure start or a timing signal to control timing of exposure end at the second imaging unit, characterized in that the frequency of the timing signal is such that the first frame rate is an integral multiple of the second frame rate and the frequency of the blinking is an integral multiple of the second frame rate, and the exposure time of the second imaging unit is coincident with at least part of the lighting time of the blinking object. a first imaging unit and a second imaging unit that are configured to capture an object; a detection unit that is configured to detect a blinking object or an object lit by a blinking illuminator; a tracking unit that is configured to perform tracking on the detected object; an estimation unit that is configured to estimate period information of the blinking, on a basis of a plurality of imaging frames of the tracked object; and a signal generation unit that is configured to generate a timing signal for capturing the object, on a basis of an estimation result, the first imaging unit is configured to capture images at a first frame rate, the second imaging unit is configured to capture images at a second frame rate lower than the first frame rate, the estimation unit is configured to estimate at least one of a frequency, a lighting time, or a lighting interval of the blinking, on a basis of changes in brightness of the object in a plurality of imaging frames of the object acquired at the first frame rate, and the signal generation unit is configured to generate a timing signal to control timing of exposure start or a timing signal to control timing of exposure end at the second imaging unit, characterized in that the frequency of the timing signal is such that the first frame rate is an integral multiple of the second frame rate and the frequency of the blinking is an integral multiple of the second frame rate, and the exposure time of the second imaging unit is coincident with at least part of the lighting time of the blinking object. the frequency of the timing signal is such that the first frame rate is an integral multiple of the second frame rate and the frequency of the blinking is an integral multiple of the second frame rate, and the exposure time of the second imaging unit is coincident with at least part of the lighting time of the blinking object.