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US 7,352,910 B2Granted
Image processing method, image processing apparatus, and image enlarging method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKatsuhiro Kanamori, Hideto Motomura, Hiroyoshi Komobuchi
Life of this patent
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Abstract
An interpolated image obtained by enlarging and interpolating an image (IN) is subjected to predetermined vector transformation to calculate an image feature vector. Also, a characteristic of a subject is obtained to calculate a physical characteristic parameter of the interpolated image. The physical characteristic parameter is used to transform the image feature vector to sharpen the interpolated image. The transformed image feature vector is subjected to transformation inverse to the predetermined vector transformation to generate an enlarged image (ELI).
Claims11
An image processing method comprising:
- a first step of performing predetermined vector transformation with respect to an original image to calculate an image feature vector;
- a second step of obtaining a characteristic of a subject appearing in the original image, and calculating a physical characteristic parameter of the original image from the obtained subject characteristic;
- a third step of transforming the image feature vector with reference to the physical characteristic parameter to sharpen the original image;
- and
- a fourth step of subjecting the transformed image feature vector to transformation inverse to the predetermined vector transformation, to generate a new image,
- wherein the obtained subject characteristic is at least one of material information of the subject and distance information from a camera to the subject.
3 more elements
An image processing method comprising:
- a first step of performing predetermined vector transformation with respect to an original image to calculate an image feature vector;
- a second step of obtaining a characteristic of a subject appearing in the original image, and calculating a physical characteristic parameter of the original image from the obtained subject characteristic;
- a third step of transforming the image feature vector with reference to the physical characteristic parameter to sharpen the original image;
- and
- a fourth step of subjecting the transformed image feature vector to transformation inverse to the predetermined vector transformation, to generate a new image,
- wherein:
- the first step includes obtaining a texture vector and an edge contour vector respectively corresponding to a texture portion and an edge contour portion of the original image, separately, as the image feature vector;
- the third step includes transforming the texture vector and the edge contour vector separately;
- the fourth step including subjecting the transformed texture vector and the edge contour vector together to the inverse transformation;
- and
- the third step including transforming the texture vector based on at least one of information concerning a material of the subject and information concerning a distance between the subject and a camera, the information being contained in the physical characteristic parameter.
8 more elements
An image processing method comprising:
- a first step of performing predetermined vector transformation with respect to an original image to calculate an image feature vector;
- a second step of obtaining a characteristic of a subject appearing in the original image, and calculating a physical characteristic parameter of the original image from the obtained subject characteristic;
- a third step of transforming the image feature vector with reference to the physical characteristic parameter to sharpen the original image;
- and
- a fourth step of subjecting the transformed image feature vector to transformation inverse to the predetermined vector transformation, to generate a new image,
- wherein:
- the first step includes obtaining a texture vector and an edge contour vector respectively corresponding to a texture portion and an edge contour portion of the original image, separately, as the image feature vector;
- the third step includes transforming the texture vector and the edge contour vector separately;
- the fourth step including subjecting the transformed texture vector and the edge contour vector together to the inverse transformation;
- and
- the third step includes transforming the edge contour vector based on designated scene information.
8 more elements
An image processing apparatus comprising:
- a transformation section of performing predetermined vector transformation with respect to an original image to calculate an image feature vector;
- a characteristic obtaining section of obtaining a characteristic of a subject appearing in the original image, and calculating a physical characteristic parameter of the original image from the obtained subject characteristic;
- and
- an image synthesizing section of transforming the image feature vector with reference to the physical characteristic parameter to sharpen the original image, and subjecting the transformed image feature vector to transformation inverse to the predetermined vector transformation, to generate a new image,
- wherein the characteristic obtaining section obtains material information of the subject as the subject characteristic.
2 more elements
An image processing apparatus comprising:
- a transformation section of performing predetermined vector transformation with respect to an original image to calculate an image feature vector;
- a characteristic obtaining section of obtaining a characteristic of a subject appearing in the original image, and calculating a physical characteristic parameter of the original image from the obtained subject characteristic;
- and
- an image synthesizing section of transforming the image feature vector with reference to the physical characteristic parameter to sharpen the original image, and subjecting the transformed image feature vector to transformation inverse to the predetermined vector transformation, to generate a new image,
- wherein the characteristic obtaining section obtains distance information from a camera to the subject as the subject characteristic.
2 more elements
Dependencies are inferred from the claim text.