| 摘要 |
Disclosed is an automatic drawing method which automatically draws a plane polygon of a building amid geographic features in order to draw a two-dimensional digital map. The disclosed automatic drawing method for a building plane includes the following steps of: obtaining aerial image data which includes information about a target through an aerial photography and performing the mapping of the target about the aerial image data; reading a building shape in the type of a two-dimensional plane contour by using the information about the target; and automatically drawing a building plane contour which connects targets while passing the targets along the read building shape. According to the present invention, a drawing work can be performed rapidly, efficiently, economically, and accurately by automatically performing the drawing work of a building plane because the area and contour of a building are able to be recognized clearly. Therefore, the present invention is able to automatically confirm the contour of a building, detect an error, and correct the contour by being additionally combined with an existing automatic drawing method and is also able to automatically draw the contour of the building by independently substituting the existing automatic drawing method. [Reference numerals] (100) Computer system; (110) Information쨌data unit; (111) Target data defining unit; (113) Aerial image data obtaining unit; (120) Program unit; (123) Projection image composing unit; (125) Plane vector converting unit; (1251) Plane building image reading unit; (1251a) Band extracting unit; (1251b) Target extracting unit; (1251c) Building extracting unit; (200) Analytical drawer; (AA) Orientation unit |
