![](<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /windid/index.php was not found on this server.</p>
<p>Additionally, a 404 Not Found
error was encountered while trying to use an ErrorDocument to handle the request.</p>
<hr>
<address>Apache/2.0.63 (Win32) PHP/5.2.14 Server at www.gisempire.com Port 80</address>
</body></html>/avatar/000/08/22/82249_small.jpg)
-
<P>由于我是ERDAS的初学者，所以对这方面很不清楚。在ERDAS软件中显示的遥感图像想要分辨出各种物质，是不是要用到波段选择，选择有很多信息的波段，但是在软件中怎么选择呢 相关系数 熵和联合熵等怎么算呢？下一步又该怎么做呢 现在很急着知道答案 所以 拜托会的... 全文
2006-05-14 14:02 来自版块 - 遥感应用技术(RS)
-
<P>由于我是ERDAS的初学者，所以对这方面很不清楚。在ERDAS软件中显示的遥感图像想要分辨出各种物质，是不是要用到波段选择，选择有很多信息的波段，但是在软件中怎么选择呢 相关系数 熵和联合熵等怎么算呢？下一步又该怎么做呢 现在很急 所以知道的话请一... 全文
2006-05-14 13:59 来自版块 - Erdas Imagine
![](<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL /windid/index.php was not found on this server.</p>
<p>Additionally, a 404 Not Found
error was encountered while trying to use an ErrorDocument to handle the request.</p>
<hr>
<address>Apache/2.0.63 (Win32) PHP/5.2.14 Server at www.gisempire.com Port 80</address>
</body></html>/avatar/000/08/22/82249.jpg)