I have a satellite image and I want to normalize the value between 0-255. I am using QGIS. I used this formula (NewRaster = ( OldRaster - -1 ) * 255 / ( 1 - -1 ) + 0 ) but it does not give me the proper result
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Where did you get that formula?– user30184Commented Oct 12, 2021 at 12:32
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1gis.stackexchange.com/questions/28559/… From this post– user123Commented Oct 12, 2021 at 12:38
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2 Answers
To do this normalization, we can use GDAL in QGIS. Follow this procedure
Processing -> Toolbox -> Processing Toolbox -> Translate (under GDAL)
Choose Input layer as your raster file, and open Additional Parameters
In Additional command-line parameters enter -scale
Now enter the output path and file name on converted and click Run
QGIS have a SAGA tool called "Raster normalization" or "Raster normalisation" (depends the version) you can use it.
Be careful if you have a new version of QGIS, there is a fail in the tool description file. It's easy to solve, when you know it, https://gis.stackexchange.com/a/424242/200979 .
