i wrote a simple graph resampling (10m) < subset and run it with GPT. Afterwards i created an RGB Image in SNAP to comparing the outcome visually and i noticed a red shift in color.
**Left Side (new product) - right side (original product) **
thats my resampling node
<node id="Resample"> <operator>Resample</operator> <sources> <sourceProduct refid="Read"/> </sources> <parameters class="com.bc.ceres.binding.dom.XppDomElement"> <referenceBand/> <targetWidth/> <targetHeight/> <targetResolution>10</targetResolution> <upsampling>Nearest</upsampling> <downsampling>First</downsampling> <flagDownsampling>First</flagDownsampling> <resamplingPreset/> <bandResamplings/> <resampleOnPyramidLevels>true</resampleOnPyramidLevels> </parameters> </node>
i have also used the Option “by reference band from source product < B3”. But it was the same outcome my RGB Image looked less reddish.
i expected no changes in the RGB Bands after resampling, because i thought the resolution of these Bands is already 10m. Or i am missing something ? Do i have to apply also some color correction process in after resampling.