提取地形特征線的正負地貌流水分析法


頁數(shù)：7 字數(shù)：6490

提取地形特征線的正負地貌流水分析法

【內容提要】由筆者重新設計的流水分析方法不同于傳統(tǒng)的流水分析方法。傳統(tǒng)方法通過區(qū)域增長法找到匯水區(qū)域，然后找出兩個相鄰匯水區(qū)域的邊界作為山脊線。這種方法一來太復雜,二來它提取的山脊線和實際的也不符。再則，傳統(tǒng)方法由于忽略了方向矩陣在引導跟蹤山谷線方面的重要用處而缺乏自適應性。為了去除傳統(tǒng)方法的缺陷，筆者致力于一種新的名為正負地貌流水分析的方法，這種方法從純粹數(shù)學角度把山脊線和山谷線等同地處理，同時還充分利用了方向矩陣，從而提高了自適應能力。
【關鍵詞】山脊線、山谷線、地形特征線、流水模擬
Abstract: The following water analysis method re-developed by the author is different from the transitional one. The traditional one extracts the ridges by finding out the boundary line of two neighboring watersheds which is found by regional growing. This method is too complex and the ridge it extracts is inconsistent with real ones. Besides, the transitional one is less self-adaptive because it neglects the direction matrix’s great usefulness in guiding the tracing of valley lines. To cope with these handicaps of the traditional method, the author turns to a new one called Positive and Negative Terrain Falling Water Analys