US 8,077,923 B2Granted

Image processing apparatus and image processing method

AssigneeCanon Kabushiki Kaisha

InventorsHidetoshi Tsubaki, Mitsuhiro Saito, Takahiro Oshino

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Abstract

An image processing apparatus includes a first processing part selecting motion detection points for detecting a motion between images, and acquiring first motion vectors that are local motion vectors at the motion detection points, a second processing part acquiring first representative motions that are representative motions of translation, scaling and rotation based on the first motion vectors, a third processing part eliminating components of the first representative motions from the first motion vectors and acquiring second motion vectors, a fourth processing part acquiring local foreshortening motions at the motion detection points from the second motion vectors, and a fifth processing part acquiring a second representative motion that is a representative foreshortening motion from the local foreshortening motions. This process can obtain information representing geometric deformation between the images by simple processing.

Claims12

Dependent claims

An image processing apparatus comprising:

an image processing unit configured to obtain a plurality of images;
a motion information detection unit configured to detect motion information on geometric deformation between the images, wherein the motion information detection unit comprises following five parts,
a first processing part configured to select motion detection points for detecting a motion between the images, and acquiring first motion vectors that are local motion vectors at the motion detection points,
a second processing part configured to acquire first representative motions that are representative motions of translation, scaling and rotation based on the first motion vectors,
a third processing part configured to eliminate components of the first representative motions from the first motion vectors and acquiring second motion vectors,
a fourth processing part configured to acquire local foreshortening motions at the motion detection points from the second motion vectors,
a fifth processing part configured to acquire a second representative motion that is a representative foreshortening motion from the local foreshortening motions, and
a motion correction unit configured to perform electronic image stabilization processing based on the motion information.

5 more elements

An image processing method for acquiring information on geometric deformation between images comprising:

a first step of selecting motion detection points for detecting motions between the images, and acquiring first motion vectors that are local motion vectors at the motion detection points;
a second step of acquiring first representative motions that are representative motions of translation, scaling and rotation based on the first motion vectors;
a third step of eliminating components of the first representative motions from the first motion vectors and acquiring second motion vectors;
a fourth step of acquiring local foreshortening motions at the motion detection points from the second motion vectors;
and
a fifth step of acquiring a second representative motion that is a representative foreshortening motion from the local foreshortening motions.

3 more elements

Dependencies are inferred from the claim text.