| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a planimetric feature environment condition provision method and a program thereof capable of easily grasping the condition of the whole of a river and the condition of data of foundations from aircraft laser data by quantifying them planely and displaying them in color properly. <P>SOLUTION: The system comprises a river environment condition chart creation part 20, a reflection intensity chart creation part 21 (a program), a land-cover classification chart creation part 22 (a program), a river channel analysis area creation part 23 (a program), and a synthesizing part 24, and generates a sand bar relative elevation image A from an orthophotoimage and laser data, a rapid and deep pool image B from which rapids, deep pools, etc. of a river can be obtained at a glance, or a riverbed material image C from which conditions of a sandbar of a river channel, stones in a sandy area, and gravel can be obtained at a glance, etc. They are obtained at the output part 3. By using an orthophotoimage and laser data, proportions of existence of a rapid and deep pool of a river channel, a sandbar, a sandy area, and a riverbed material can be obtained as numerical data. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
