Image processing apparatus, image processing method and program
AssigneeCanon Kabushiki Kaisha
InventorsKoichi Magai, Hirotaka Shiiyama, Hidetomo Sohma, Masahiro Matsushita
Life of this patent
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Abstract
An image processing method performs reduction processing on an input image to acquire a reduced image, extracts a feature point from a group of images including the input image and one or more of the reduced images, determines as a matched feature point the feature point extracted from a matching position in each of two or more images in the group of images, calculates a local feature quantity of the matched feature point determined by the determination unit, and registers the calculated local feature quantity as a local feature quantity of the input image.
Claims10
An image processing apparatus configured to receive a plurality of input images, the image processing apparatus comprising:
- a conversion unit configured to perform reduction processing on a first input image to generate a reduced image;
- an extraction unit configured to extract a first feature point from the first input image;
- an extraction and determination unit configured to extract a second feature point from a position in each of two or more input images from a group of images including the plurality of input images and the reduced image, the position of the second feature point corresponding to a position in the first input image of the first feature point;
- and
- a calculation and registration unit configured to calculate a local feature quantity of the second feature point extracted by the extraction and determination unit and to register the calculated local feature quantity as a local feature quantity of the first input image.
An image processing method for processing a plurality of input images, the method comprising:
- performing reduction processing on a first input image to generate a reduced image;
- extracting a first feature point from the first input image;
- extracting a second feature point from a position in each of two or more further images from a group of images including the plurality of input images and the reduced image, the position of the second feature point corresponding to a position in the first input image of the first feature point;
- and
- calculating a local feature quantity of the second feature point and registering the calculated local feature quantity as a local feature quantity of the first input image.
A program that, when run on a computer, causes the computer to execute a method for processing a plurality of input images, the method comprising:
- performing reduction processing on a first input image to generate a reduced image;
- extracting a first feature point from the first input image;
- extracting a second feature point from a position in each of two or more further images from a group of images including the plurality of input images and the reduced image, the position of the second feature point corresponding to a position in the first input image of the first feature point;
- and
- calculating a local feature quantity of the second feature point and registering the calculated local feature quantity as a local feature quantity of the first input image.
A computer-readable storage medium storing a program that, when run on a computer, causes the computer to execute a method for processing a plurality of input images, the method comprising:
- performing reduction processing on a first input image to generate a reduced image;
- extracting a first feature point from the first input image;
- extracting a second feature point from a position in each of two or more further images from a group of images including the plurality of input images and the reduced image, the position of the second feature point corresponding to a position in the first input image of the first feature point;
- and
- calculating a local feature quantity of the second feature point and registering the calculated local feature quantity as a local feature quantity of the first input image.
Dependencies are inferred from the claim text.