IMAGE PROCESSING APPARATUS, IMAGE PROCESSING APPARATUS CONTROL METHOD, IMAGE PICKUP APPARATUS, AND IMAGE PICKUP APPARATUS CONTROL METHOD

• US 20180146135A1
• Filed: 01/16/2018
• Published: 05/24/2018
• Est. Priority Date: 08/20/2014
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Nakayama, Fumitaka
• Granted Patent: US 10,455,149 B2
• Time in Patent Office: Days
• CPC Class Codes: G06T 2207/10148 Varying focus
• CPC Class Codes: G06T 7/571 from focus
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 2013/0092 Image segmentation from stereoscopic image signals
• CPC Class Codes: H04N 23/672 based on the phase difference signals
• CPC Class Codes: H04N 23/80 Camera processing pipelines; Components thereof
• CPC Class Codes: H04N 25/702 SSIS architectures characterised by non-identical, non-equidistant or non-planar pixel layout
• CPC Class Codes: H04N 25/704 Pixels specially adapted for focusing, e.g. phase difference pixel sets
• CPC Class Codes: H04N 5/2621 Cameras specially adapted for the electronic generation of special effects during image pickup, e.g. digital cameras, camcorders, video cameras having integrated special effects capability

Abstract

An image processing apparatus including an acquiring unit configured to acquire an image signal of a plurality of images obtained by picking up an object image that is formed by a photographing optical system; a determining unit configured to determine a defocus amount of the object image by using the image signal of the plurality of images; and a conversion unit configured to perform, on the defocus amount, gradation conversion that has at least one conversion characteristic out of a plurality of different conversion characteristics, and to output information that is based on the defocus amount converted by the gradation conversion.

Claims

1. An image processing apparatus, comprising:

an acquiring unit configured to acquire an image signal of a plurality of images obtained by picking up an object image that is formed by a photographing optical system;

a determining unit configured to determine a defocus amount of the object image by using the image signal of the plurality of images; and

a conversion unit configured to perform, on the defocus amount, gradation conversion that has at least one conversion characteristic out of a plurality of different conversion characteristics, and to output information that is based on the defocus amount converted by the gradation conversion.