Image capturing apparatus and method for controlling the same
AssigneeCanon Kabushiki Kaisha
InventorTakafumi Kishi
Life of this patent
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Abstract
An image capturing apparatus comprises: an image sensor that includes a plurality of pixels, each including a plurality of photoelectric conversion elements; a readout unit that reads out a signal from a portion of the photoelectric conversion elements of each pixel as a first signal and reads out a sum of signals from the plurality of photoelectric conversion elements of each pixel as an image signal; a generation unit that generates a second signal for each pixel using the image signal and the first signal; and a calculation unit that calculates a moving amount of a focus lens for achieving an in-focus state based on a phase difference between the first signal and the second signal. The calculation unit performs the calculation without using a signal from a defective line.
Claims19
An image capturing apparatus comprising:
- an image sensor that includes a plurality of micro-lenses, wherein the image sensor outputs signals from which parallax images of first image signal and second image signal are obtained;
- and
- a calculation unit configured to calculate first correlation data based on the first image signal and the second image signal, and second correlation data by combining a plurality of the first correlation data,
- wherein a defective signal among the first image signal and the second image signal that is not appropriate for generating the first correlation data is excluded upon calculating the second correlation data.
A method for controlling an image capturing apparatus including an image sensor that includes a plurality of micro-lenses, wherein the image sensor outputs signals from which parallax images of first image signal and second image signal are obtained, the method comprising:
- calculating first correlation data based on the first image signal and the second image signal, and second correlation data by combining a plurality of the first correlation data,
- wherein a defective signal among the first image signal and the second image signal that is not appropriate for generating the first correlation data is excluded upon calculating the second correlation data.
An image capturing apparatus comprising:
- an image sensor that includes a plurality of micro-lenses, wherein the image sensor outputs signals from which parallax images of first image signal and second image signal arc obtained;
- and
- a circuit performing the function of a calculation unit;
- the calculation unit configured to calculate first correlation data based on the first image signal and the second image signal, and second correlation data by combining a plurality of the first correlation data,
- wherein a defective signal among the first image signal and the second image signal that is not appropriate for generating the first correlation data is excluded upon calculating the second correlation date.
Dependencies are inferred from the claim text.