IMAGE CAPTURING APPARATUS AND CONTROL METHOD THEREOF

摘要

An image capturing apparatus comprises an image sensor configured to receive object image light and sequentially read out image signals in a horizontal or vertical direction, a detection unit configured to detect an object region, a focus adjustment unit configured to perform focus adjustment; a storage unit configured to perform thinning processing and to sequentially store the image signals that have undergone thinning, and a calculation unit configured to filter the stored image signals, and calculate a focusing signal of a different direction from a readout direction, the storage unit increases a thinning rate of image signals in the readout direction to be greater when the object region is a second size than when the object region is a first size, the second size being larger than the first size.

主权项

1. An image capturing apparatus comprising:
an image sensor that has pixels arranged in a two-dimensional array, and is configured to receive object image light and sequentially read out image signals in a horizontal direction or a vertical direction; a detection unit configured to detect an object region based on image signals captured by the image sensor; a focus adjustment unit configured to perform focus adjustment based on image signals within the detected object region; a storage unit configured to perform thinning processing on at least a portion of the image signals that are included in the object region in the direction in which the image signals are read out from the image sensor, and to sequentially store the image signals that have undergone thinning; and a first calculation unit configured to filter the image signals stored by the storage unit sequentially in a different direction from the readout direction, and calculate a focusing signal of the different direction from the readout direction, wherein the storage unit increases a thinning rate of image signals in the readout direction to be greater when the object region is a second size than when the object region is a first size, the second size being larger than the first size.