基于K_T变换的NDVI提取方法研究_苏琦.pdfVIP

第 33卷 第 1期 测绘与空间地理信息 Vol. 33, No. 1 2010年 2月 GE OMA TICS SPA TIAL IN FORMA TION TECHN OLOG Y Feb. , 2010 K- TND VI 苏 琦, 杨凤海, 王明亮, 武东海 (东北农业大学 资源与环境学院, 黑龙江 哈尔滨 150030) : 阐述了 K- T 变换的原理及其在植被信息 取方面的优点将基于 K- T 变换 取的ND VI 结果与直接 在 TM 影像上 取的ND VI 结果进行比较实验结果表明, 基于 K- T 变换的ND VI 取方法得到的结果图像纹 理清晰光谱保持能力强, 对于区域植被覆盖信息 取, 进而对生态环境变化荒漠化等研究具有较重要的意义 : TM; K - T 变换; ND VI : TP79 : B : 1672- 867( 2010) 01- 01 0- 03 The Research on theM ethod of ExtractingND VI Based on K- T Transformation SU Q ,i YANG Feng- hai,WANG M ing- liang, WU Dong- hai (The College of R eso rces and Environment of Northeast Agric lt ralUniversity, Harbin 150030, China) Abstract: Th is paper describes the princip le of K- T transform ation and the advantages of K- T transform ation in extracting vegeta- tion inform ation. In order to test the resu lt,ND VI based on K - T transform ation com pare w ithN D VI based on TM mi ages. The exper-i m ent show s that the mi ages of th is m ethod of extractingND VI can get d istinct texture and better light spectrum property. For the re- gional vegetation cover inform ation extraction, and then study the ecological environm ent change, desertification, and other research has m ore mi portant sign ificance. K ey words:TM; K - T transform ation;N D VI ND VI , 0 ,(K - T), , 2040, , , (ND VI, Normalized D ifferenceV egetation Index) , , ERDAS , ND VI ND VI 1 ERDAS , 1. 1 TM 1, TM 2, TM 3, TM 4, TM , TM 7 , , ND VI = (N IR -R ed ) / ( N IR + R ed ), N IR 6 120 m, , R ed , TM 6 : ER- N