摘要:
Disclosed herein is a method of extracting three-dimensional building information using shadow analysis. In the method, an image of a building captured through a manmade satellite, an airplane or some other means, and metadata to be used for extraction of building information is received, the azimuth and altitude angles of a sun in an area of capture, and the azimuth and altitude angles of a camera are calculated. The contour of the roof of the building, the location and height of which are desired to be obtained, is extracted from the image. A height value is assigned to the extracted contour of the roof of the building, and the height value is adjusted until the assigned height value satisfies a predetermined condition. The vertical line and shadow of the building, which are based on the height value, is projected onto the image. The location of the building is extracted using the height value and vertical line of the building if the location of the projected shadow coincides with the location of the shadow of the building.
摘要:
Disclosed herein is a method of extracting three-dimensional building information using shadow analysis. In the method, an image of a building captured through a manmade satellite, an airplane or some other means, and metadata to be used for extraction of building information is received, the azimuth and altitude angles of a sun in an area of capture, and the azimuth and altitude angles of a camera are calculated. The contour of the roof of the building, the location and height of which are desired to be obtained, is extracted from the image. A height value is assigned to the extracted contour of the roof of the building, and the height value is adjusted until the assigned height value satisfies a predetermined condition. The vertical line and shadow of the building, which are based on the height value, is projected onto the image. The location of the building is extracted using the height value and vertical line of the building if the location of the projected shadow coincides with the location of the shadow of the building.
摘要:
A method of extracting a road from images photographed from an artificial satellite or aircraft, which includes a first step of calculating an orientation of an initial input coordinate after selection thereof, a second step of generating a template window which is inclined by the calculated orientation with respect to the initial input coordinate, a third step of generating an initial target window moved from the generated template window in a direction of the orientation of the input coordinate, a fourth step of calculating an origin point of the optimal target window and a new orientation thereof by performing template matching for the generated initial target window, a fifth step of generating a new initial target window moved from the calculated origin point in the a direction of the calculated new orientation and repeatedly performing the fourth step until all the images have been completely processed, and a sixth step of generating the road on a map by connecting the origin points obtained from the images with one another.
摘要:
A dielectric composition for plasma display panel and a plasma display panel including the same are disclosed. The dielectric composition includes about 3 to 10 parts by weight of SiO2, about 13 to 35 parts by weight of B2O3, about 25 to 48 parts by weight of ZnO, and about 10 to 20 parts by weight of BaO.
摘要翻译:公开了一种用于等离子体显示面板的电介质组合物和包括其的等离子体显示面板。 电介质组合物包括约3至10重量份的SiO 2,约13至35重量份的B 2 O 3,约25至48重量份的ZnO和约10至20重量份的BaO。
摘要:
Disclosed herein is a method of extracting 3-dimension object information by a shadow analysis from a single image without meta information, and a technical problem to be solved is to extract three-dimension information of an object such as a height of the object and a footprint surface position of the object from a single image without meta information.
摘要:
Disclosed herein is a method of extracting 3-dimension object information by a shadow analysis from a single image without meta information, and a technical problem to be solved is to extract three-dimension information of an object such as a height of the object and a footprint surface position of the object from a single image without meta information.