Construction and application of knowledge decision tree after a disaster for water body information extraction from remote sensing images

Abstract

ç¾å®³å‘ç”Ÿä»¥åŽï¼Œæ‚¬æµ®ç‰©è´¨ã€æ³¢æµªå’Œæ°´æ·±ç­‰â€œåŒç‰©å¼‚è°±â€ä¼šå¯¼è‡´æ°´ä½“ä¿¡æ¯æå–ä¸å®Œæ•´ï¼Œè€Œé˜´å½±ã€æ²¥é’è·¯é¢ã€æµ“å¯†æ¤è¢«ç­‰â€œå¼‚ç‰©åŒè°±â€ä¹Ÿä¼šé™ä½Žæ°´ä½“ä¿¡æ¯æå–ç²¾åº¦ã€‚é’ˆå¯¹æ­¤é—®é¢˜ï¼Œæå‡ºä¸€ç§ç‰¹å¾çŸ¥è¯†å¼•å¯¼çš„ç¾åŽæ°´ä½“ä¿¡æ¯æå–æ–¹æ³•ã€‚é¦–å ˆï¼Œåˆ†æžæ°´ä½“é¥æ„Ÿå›¾åƒç‰¹å¾(å ‰è°±ç‰¹å¾ã€å‡ ä½•ç‰¹å¾ã€çº¹ç†ç‰¹å¾ã€ç©ºé—´å ³ç³»ç‰¹å¾)ï¼Œæž„å»ºç¾åŽæ°´ä½“ä¿¡æ¯æå–çŸ¥è¯†å†³ç­–æ ‘ï¼›å ¶æ¬¡ï¼Œå¯¹é¥æ„Ÿå›¾åƒè¿›è¡Œé¢å‘å¯¹è±¡åˆ†å‰²ï¼ŒèŽ·å–å¯¹è±¡åŸºå ƒï¼Œå¹¶è®¡ç®—ç‰¹å¾å‚æ•°ï¼›ç„¶åŽï¼Œåœ¨çŸ¥è¯†å†³ç­–æ ‘çš„æ”¯æŒä¸‹æå–ç¾åŽæ°´ä½“ä¿¡æ¯ï¼›æœ€åŽï¼Œå¯¹æ°´ä½“ä¿¡æ¯æå–ç»“æžœè¿›è¡ŒåŽå¤„ç†ï¼Œä»¥åŽ»é™¤å™ªå£°å’Œå¡«å 孔洞。选取“5·12æ±¶å·åœ°éœ‡â€é¥æ„Ÿå›¾åƒå¼€å±•éªŒè¯å®žéªŒï¼Œç»“æžœè¡¨æ˜Žï¼Œæ°´ä½“ä¿¡æ¯æå–ç»“æžœä½ç½®å‡†ç¡®ï¼Œè¾¹ç•Œæ¸ æ™°ï¼Œç”Ÿäº§è€ ç²¾åº¦å’Œç”¨æˆ·ç²¾åº¦åˆ†åˆ«ä¸º0.85和0.94，该方法能够有效提取复杂背景下的灾后水体信息。