我有一个名为ndvi.tif的tif文件,其中包含介于-1和1之间的值。该文件具有一个波段。 另外,我有一个要编辑的ndvi.vrt文件。
我的目标是根据橙绿色颜色值更改图像的颜色。当前图片为黑白。
我运行命令:
gdal_translate -of GTiff -ot Float32 C:\Users\oze\test.vrt C:\Users\oze\modified_palette.tif -scale -1 1
结果输出在69-241之间,颜色仍然是黑白,而不是我所期望的橙橙色。
这是ndvi.vrt文件:
<VRTDataset rasterXSize="1271" rasterYSize="3179">
<SRS>PROJCS["WGS 84 / UTM zone 36N",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",33],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","32636"]]</SRS>
<GeoTransform> 7.3790000000000000e+05, 1.0000000000000000e+01, 0.0000000000000000e+00, 3.6828200000000000e+06, 0.0000000000000000e+00, -1.0000000000000000e+01</GeoTransform>
<Metadata>
<MDI key="AREA_OR_POINT">Area</MDI>
</Metadata>
<VRTRasterBand dataType="Float32" band="1">
<ColorInterp>Green</ColorInterp>
<SimpleSource>
<SourceFilename relativeToVRT="0">C:\Users\oze\test.tif</SourceFilename>
<SourceBand>1</SourceBand>
<SourceProperties RasterXSize="1271" RasterYSize="3179" DataType="Float32" BlockXSize="1271" BlockYSize="1" />
<SrcRect xOff="0" yOff="0" xSize="1271" ySize="3179" />
<DstRect xOff="0" yOff="0" xSize="1271" ySize="3179" />
</SimpleSource>
</VRTRasterBand>
</VRTDataset>
这就是一切之前的样子:
这是命令运行后的外观:
颜色对我来说很重要:
这些是之前的值:
以下是这些值:
那对我来说很重要:
答案 0 :(得分:0)
谢谢你,有些事情对我来说没用。
我使用以下命令创建了VRT文件:
gdal_translate -of VRT orig.tif orig.vrt
我将文件更改为以下内容-刚刚添加了<ColorTable>
并更改为<ColorInterp> Palette </ ColorInterp>
我运行了以下命令:
gdal_translate orig.tif orig_new.tif
什么也没发生。输出文件与输入文件完全相同。
这是更新的VRT文件:
<VRTDataset rasterXSize="1271" rasterYSize="3179">
<SRS>PROJCS["WGS 84 / UTM zone 36N",GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",33],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","32636"]]</SRS>
<GeoTransform> 7.3790000000000000e+05, 1.0000000000000000e+01, 0.0000000000000000e+00, 3.6828200000000000e+06, 0.0000000000000000e+00, -1.0000000000000000e+01</GeoTransform>
<Metadata>
<MDI key="AREA_OR_POINT">Area</MDI>
</Metadata>
<VRTRasterBand dataType="Float32" band="1">
<ColorInterp>Palette</ColorInterp>
<ColorTable>
<Entry c1="203" c2="0" c3="23" c4="255"/>
<Entry c1="131" c2="66" c3="37" c4="255"/>
<Entry c1="201" c2="234" c3="157" c4="255"/>
<Entry c1="137" c2="51" c3="128" c4="255"/>
<Entry c1="255" c2="234" c3="0" c4="255"/>
<Entry c1="167" c2="226" c3="226" c4="255"/>
<Entry c1="255" c2="184" c3="184" c4="255"/>
<Entry c1="218" c2="179" c3="214" c4="255"/>
<Entry c1="209" c2="209" c3="209" c4="255"/>
<Entry c1="207" c2="164" c3="142" c4="255"/>
</ColorTable> <SimpleSource>
<SourceFilename relativeToVRT="1">orig.tif</SourceFilename>
<SourceBand>1</SourceBand>
<SourceProperties RasterXSize="1271" RasterYSize="3179" DataType="Float32" BlockXSize="1271" BlockYSize="1" />
<SrcRect xOff="0" yOff="0" xSize="1271" ySize="3179" />
<DstRect xOff="0" yOff="0" xSize="1271" ySize="3179" />
</SimpleSource>
</VRTRasterBand>
</VRTDataset>