I want to do accuracy assessment of land cover classification of Kaski, Nepal that I have done. But, due to lack of reference data, I am unable to do so. How Can I find that data? Selecting random points could be helpful but I want to use some verified or authentic data.
What about using Globcover 2009? Id really have to see your classes (did you use a standard system?) to give a complete answer.
The reference data or ground truth are usually provided by the agencies or organizations that originally capture the image. Otherwise you have to conduct field surveys to collect samples. But that is very expensive and time consuming process. Sometimes people also pick up sample pixels by using image processing tools but that is not a proper approach...
MAY BE YOU CAN GET YOUR REFERENCE DATA FROM REMOTE SENSING CENTER HYDERABAD . WHY YOU ARE NOT TRYING FROM TOPOGRAPHICAL MAP ,SCALE SHOULD BE 1:25000. IN TOPOSHEET YOU WILL GET DETAIL LATITUDE AND LONGITUDE.ON THE BASE OF THIS YOU CAN GEOREGISTERED YOUR MAP IN ANY GIS SOFTWARE.
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