Land partition data generating method and apparatus
AssigneeHitachi Software Engineering Co., Ltd.
InventorsSen Kubota, Takashi Onoyama
Life of this patent
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Abstract
A method and apparatus generates data concerning a partition of land such as farmland based on an observation image of the surface of the earth photographed by a high-altitude flying vehicle such as a satellite or airplane at high speed while reducing the burden on the user. The method comprises the steps of extracting edges in the observation image; extracting a rectangle region on the image by determining and connecting points of intersection of a plurality of straight lines extending radially from a point on the image and the edges; and adjusting the extracted rectangle region by refining and correcting it.
Claims13
A method of generating land partition data by analyzing an observation image of the surface of the earth photographed by aerial photograph or satellite imagery, comprising the steps of:
- extracting the edges of the observation image;
- and
- extracting a rectangle region on the image by determining and connecting points of intersection of a plurality of straight lines extending radially from a point on the image and the edges.
A method of generating land partition data by analyzing an observation image of the surface of the earth photographed by aerial photograph or satellite imagery, comprising the steps of:
- extracting the edges of the observation image,
- extracting a rectangle region on the image by determining and connecting points of intersection of a plurality of straight lines extending radially from a point on the image and the edges, and
- adjusting step comprises the extracted rectangle region.
An apparatus for generating land partition data by analyzing an
- observation image of the surface of the earth photographed by aerial photograph or satellite imagery, comprising:
- means for extracting edges of the observation image;
- and
- means for extracting a rectangle region by determining and connecting, in the
- image from which edges have been extracted, points of intersection of a plurality of straight lines extending radially from a point on the image and the edges.
Dependencies are inferred from the claim text.