Abstract: A line-of-sight detecting apparatus includes a processor configured to acquire an estimated gaze point position of a user on a display element based on an eyeball image, perform calibration for the estimated gaze point position to reduce a difference between the estimated gaze point position and an actual gaze point position of the user, determine whether or not the calibration is to be performed again based on a difference between a first pupil diameter of the user when the calibration was performed and a second pupil diameter of the user when the estimated gaze point position was acquired based on an eyeball image acquired after the calibration, notify the user of information about performing again the calibration in a case where it is determined that the calibration is to be performed again, and perform again the calibration in a case where it is determined that the user has instructed to perform again the calibration according to notified information.

Abstract: A construction machine comprises: a work machine mounted on a machine body; an attachment operably mounted on the work machine; an action control means for controlling the action of the attachment; an information acquisition means for acquiring attachment's action information; and a notification means for performing notification of an operation state related to hazardous attachment's action, such notification being on the basis of the action information acquired by the information acquisition means.

Abstract: A control apparatus that is capable of quickly and easily reducing the positional deviation of a gaze point, occurring whenever a photographer’s eye is brought into contact with a viewfinder. A position corresponding to a gaze point of a user is estimated and corrected based on a position of an indicator displayed on a display section and the position corresponding to the gaze point of the user associated with the position of the indicator. In a first mode, the correction is performed based on positions of a first number of indicators, and in a second mode, the correction is performed based on a second number, smaller than the first number, of indicators.

Abstract: An image pickup apparatus executes a focus detecting task configured to detect a defocus amount by a signal acquired from an image sensor, a predicting task configured to calculate information corresponding to a predicted image plane position by a prediction calculation using the defocus amount detected a plurality of times and position data of a focusing element and time data when the defocus amount is detected, and a controlling task configured to calculate a driving amount of the focusing element using the information corresponding to the predicted image plane position, to calculate a driving velocity for the focusing element according to the driving amount, and to provide a control such that the focusing element is driven at the driving velocity, wherein the controlling task calculates the driving velocity in order that an image plane position of the imaging optical system approaches the predicted image plane position.

Abstract: An image pickup apparatus executes a focus detecting task configured to detect a defocus amount by a signal acquired from an image sensor, a predicting task configured to calculate information corresponding to a predicted image plane position by a prediction calculation using the defocus amount detected a plurality of times and position data of a focusing element and time data when the defocus amount is detected, and a controlling task configured to calculate a driving amount of the focusing element using the information corresponding to the predicted image plane position, to calculate a driving velocity for the focusing element according to the driving amount, and to provide a control such that the focusing element is driven at the driving velocity, wherein the controlling task calculates the driving velocity in order that an image plane position of the imaging optical system approaches the predicted image plane position.