IMAGE SHAKE CORRECTION DEVICE, CONTROL METHOD, AND IMAGE PICKUP APPARATUS

摘要

An image shake correction device provided in an image pickup apparatus drives an image shake correction lens on the basis of detection information about shaking and corrects the image shake. An angular velocity sensor detects an angular velocity of shaking, and a motion vector detection unit detects a motion vector from a plurality of images that has been captured. An adaptive digital filter and an adaptive algorithm unit perform a process that generates a compensation value for a shake correction remainder, and FF (feed forward) control is performed in accordance with the result of the process. In the FF control, a filter coefficient of the adaptive digital filter is adjusted on the basis of the motion vector and a detection signal for shaking. The control filter calculates a feedback control amount so as to track the position of the image shake correction lens to a target position. An image shake correction lens drive unit performs the drive control of the image shake correction lens in accordance with the output of the control filter.

主权项

1. An image shake correction device that corrects an image shake of an image by an image shake correction unit comprising:
an acquisition unit configured to acquire a detection signal for shaking applied to the image pickup apparatus, and a motion vector detected from an image signal; a calculation unit configured to calculate a correction value of image shake correction from the detection signal for shaking; a filter unit configured to calculate a compensation value for the correction value of the image shake correction by using the detection signal for shaking; an adjustment unit configured to adjust transmittance characteristics of the filter unit by the detection signal for shaking and the motion vector; and a control unit configured to control the image shake correction unit in accordance with the correction value and the compensation value.