I've a ArcMap classified image in tiff format. I want to open it in Erdas for further Accuracy assessment.
How to open the image in Erdas with same color ramp as it is given after classification?
The first thing I will do if I want to open a raster image in Erdas Imagine to export the (.tif) image into (.img) because the latter is an Erdas Imagine format.
There is a white paper on how to change pixel colors and recode from HEXAGON Support and another PDF training from the same company on Working With Raster Attributes in Erdas Imagine, try to follow the instructions in these tutorials. It may give you a solution to your problem.