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, which comprises 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, which comprises 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, the apparatus 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.