Landsat卫星图像波段组合技巧

 

1.TM321(RGB):均是可见光波段,合成结果接近自然色彩。对浅水透视效果 好,可用于监测水体的浊度、含沙量、水体沉淀物质形成的絮状物、水底地形。一般而言:深水深蓝色;浅水浅蓝色;水体悬浮物是絮状影象;健康植被绿色;土壤 棕色或褐色。可用于水库、河口及海岸带研究,但对水陆分界的划分不合适。 这种RGB组合模拟出一副自然色的图象。有时用于海岸线的研究和烟柱的探测。

 

2.TM453(RGB):2个红外波段、1个红色波段。对内陆湖泊及河流分辨清楚。植被类型及长势可由棕、绿、橙、黄等色调分别。能区分土壤含水量(水分越多则越暗)。用于土壤湿度和植被状况的分析。也很好的用于内陆水体和陆地/水体边界的确定。

 

3.TM742(RGB):植被基本都是绿色,城市呈现品红色或紫色,草地淡绿色,森林深绿色(针叶林色调比阔叶林暗)。能区分土壤和植被的含水量。适用于水/陆边界划分、土/植被边界划分,但不适于植被分类。 土壤和植被湿度内容分析;内陆水体定位。植被显示为绿色的阴影。

 

4.TM432(RGB):标准假彩色。植被呈现各种红色调。深红色/亮红色为阔叶林,浅红色为草地等生物量较小的植被。密集的城市地区为青灰色。最适合用于植被分类。 红外假色。在植被、农作物、土地利用和湿地分析的遥感方面,这是最常用的波段组合。

5.TM543(RGB):城镇和农村土地利用的区分;陆地/水体边界的确定。

6.TM457(RGB):探测云,雪和冰(尤其在高维度地区)。

7.TM4-TM3/TM4+TM3  NDVI-标准差植被指数;

 

8.TM波段4:3的不同比率被证明在增强不同植被类型对比度方面很有用。

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吾爱地理 » Landsat卫星图像波段组合技巧
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