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US 8,254,693 B2Granted
Image processing apparatus, image processing method and program
AssigneeCanon Kabushiki Kaisha
InventorsMiho Ishigami, Ichiro Umeda, Xiaoyan Dai
Life of this patent
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Abstract
An image processing apparatus and method generate a vector expression by defining a direction and attribute of gradation of an image as a daub color of the vector expression for each divided contour line of a similar color region obtained from an input image, based on pixel values of plural sampling points inside each of the divided contour lines.
Claims15
An image processing apparatus comprising:
- a contour line obtaining unit configured to obtain a contour line of a similar color region from an input image;
- a feature-point setting unit configured to set a plurality of feature points based upon the contour line;
- a pixel-value obtaining unit configured to divide the contour line to produce divided contour lines based on the set feature points to obtain pixel values of plural sampling points inside each of the divided contour lines;
- and
- a generating unit configured to generate a vector expression by defining a direction and an attribute of gradation as a daub color of the vector expression for each of the divided contour lines based upon the obtained pixel values of the plural sampling points.
2 more elements
An image processing method comprising:
- a contour line obtaining step of obtaining a contour line of a similar color region from an input image;
- a feature-point setting step of setting a plurality of feature points based upon the contour line;
- a pixel-value obtaining step of dividing the contour line to produce divided contour lines based on the set feature points to obtain pixel values of plural sampling points inside each of the divided contour line;
- and
- a generating step of generating a vector expression by defining a direction and an attribute of gradation as a daub color of the vector expression for each of the divided contour lines based upon the obtained pixel values of the plural sampling points.
2 more elements
A non-transitory computer readable storage medium storing a program for executing an image processing method by a computer, the image processing method comprising:
- a contour line obtaining step of obtaining a contour line of a similar color region from an input image;
- a feature-point setting step of setting a plurality of feature points based upon the contour line;
- a pixel-value obtaining step of dividing the contour line to produce divided contour lines based on the set feature points to obtain pixel values of plural sampling points inside each of the divided contour line;
- and
- a generating step of generating a vector expression by defining a direction and an attribute of gradation as a daub color of the vector expression for each of the divided contour lines based upon the obtained pixel values of the plural sampling points.
2 more elements
Dependencies are inferred from the claim text.