ArcGis——资源三号卫星的DSM提取流程

阳光穿透心脏的1/2处 2023-07-03 02:52 65阅读 0赞

数据源：zy3卫星数据  
软件：ArcGis10.5以上版本  
orthomapping

实验步骤：

**1.创建镶嵌数据集**  
打开【ArcToolBox】中的数据管理工具，点击【栅格】中的【镶嵌数据集】，进行创建镶嵌数据集。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70]  
选择输出位置，命名，选择【投影坐标系】中的WGS\_1984\_UTM\_Zone\_50N.  
**2. 添加栅格数据到镶嵌数据集**  
【镶嵌数据集】选择第一步建立的数据集，【栅格类型】选择ZY3-CRESDA，点击【栅格类型属性】，【常规】下面的【处理模板】选择三线阵类型。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 1]  
【属性】下面的【使用高程的正射校正】，选择【dem】，注意dem的路径必须是英文路径，勾选【大地水准面】，点击确定。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 2]

输入zy3原始数据的位置，结果为：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][20200131215452880.png]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 4]

打开属性表  
![在这里插入图片描述][20200131215530915.png]  
**3. 区域网平差处理**  
点击【自定义】中的【工具条】，加载工具，选择【命令】，输入【区域网平差】，选择【窗口】，添加区域网平差。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 5]  
打开【区域网平差】工具。选择创建的镶嵌数据集。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 6]  
点击【区域网平差工具】下的【计算连接点】，输入参数，其他默认  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 7]  
重新选择数据集，可以对每一个控制点进行编辑与调整。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 8]  
控制点：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 9]  
点击【计算区域网平差】，环境设置，【并行处理】设置为0. 查看平差结果RMS。当RMS满足一定要求，如小于半个像素，则平差结果较好，可以应用平差计算的结果  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 10]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 11]  
打开属性表，查看残差。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 12]  
点击【应用区域网平差】  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 13]  
**4. 生成点云和dsm**  
点击【构建立体模型】，默认  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 14]  
点击zy3右键，打开【立体表】，查看立体效果。  
![在这里插入图片描述][20200131215803285.png]  
点击【生成点云】，输入LAS路径和名称，匹配方法选择ETM,精度较低，可以选择更高的方式，电脑运行不了，无法计算。环境设置中【并行处理】设置为0  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 15]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 16]  
**5.创建Las数据集**  
输入所有的点云文件  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 17]  
点云结果

![在这里插入图片描述][2020013121590645.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 18]  
点击【基于点云进行插值】，输入点云数据集，像元大小选择10，类型选择dsm  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 19]  
对dsm重分类  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 20]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 21]  
Dsm结果：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5nemlsaGM_size_16_color_FFFFFF_t_70 22]

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