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Description: 读取TM波段3和波段4的图像，计算归一化植被指数NDVI，并用NDVI处理单波段图像，突出显示遥感影像的植被部分（输出后的图像上高亮的部分是植被区域）-Band 3 and band 4 images of a TM image are read and NDVI computed. Then a single band image is processed with the NDVI leading to the vegetation regions in the remote sensed image are highlighted(the hightlighted areas in the output image are vegetation regions).
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Size: 854016 |
Author: 凌波微步 |
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Description: 利用CUDA实现了遥感数字影像处理基本算法植被指数，并分别实现了采用Globalmemory、Sharedmemory，Texturememory进行数据传输，还同CPU中的串行代码进行了时间比较和误差分析。为了方便在服务器环境下测试运行，我们去掉了在Windows环境下对第三方库遥感影像库GDAL的依赖，而将遥感影像数据转成了二进制图像格式，对于输出影像也以同样的二进制格式存储。图像效果图通过专业遥感软件PCI或通用图像处理软件PhotoshopCS4打开。最后我们对计算结果进行了误差分析和加速比分析。-CUDA enables the use of remote sensing digital image processing of basic algorithms vegetation index, and were realized using Globalmemory, Sharedmemory, Texturememory data transmission, but also with the serial code CPU time comparison and error analysis. In order to facilitate the test run in the server environment, we have removed in the Windows environment for third-party remote-sensing image library GDAL library dependencies, but will switch to remote sensing image data into a binary image format, for the output images are also stored in the same binary format . Image Effect Picture through professional remote-sensing software, PCI or universal image processing software PhotoshopCS4 open. Finally, we calculated the results of the error analysis and speedup analysis.
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Size: 2048 |
Author: 秦论剑 |
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