Classification Scheme not working

KatherineMcNulty · ‎09-07-2022

Hello,

I have made a classification scheme to extract just two variables from single band images, but the images have different ranges (I'm not sure if this is the correct terminology) and I think that is what is causing the error. For certain images the classification works great and other images the whole image will be classified as one class. It works well for ranges 1-255 and struggles with images above the 255. Can I compress the single band images within GIS in some way?

The images below show what I mean by ranges.

JohnWatt · ‎09-08-2022

Hi Katherine. The only suggestion I'd make is to try changing the images to the same (or sufficient) bit-depth if you're running them through an analysis process. The 11-255 raster is probably 8bit integer, the 69-1602 raster would have to be bigger - probably 16bit. For an 8bit (pixel depth) image, the maximum value will be 255 (or 11111111 in binary) but no higher.

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JohnWatt · ‎09-08-2022

Hi Katherine. The only suggestion I'd make is to try changing the images to the same (or sufficient) bit-depth if you're running them through an analysis process. The 11-255 raster is probably 8bit integer, the 69-1602 raster would have to be bigger - probably 16bit. For an 8bit (pixel depth) image, the maximum value will be 255 (or 11111111 in binary) but no higher.