Hello everyone,
I wanted to assess accuracy after clasifying Landsat TM scene using supervised classification in Idrisi32. I don't have any reference data for the area. I created a random points vector. But didn't have a clue what to do next. Can anyone tell me how I could blend/swipe random points vector layer with false color composite image and assess the accuracy.

Also I have another question. How to change .rst image to grid for further analysis in ESRI suite of products???

Answers from anyone will be highly appreciated.