What can i do if am getting the result for my NDVI and having feeling that the result is not correct. For example, the vegetation in the past recorded low when LULC change analysis justify high percentage as regards to vegetatio
Similar type of discussion has been discussed earlier in research gate. Hope it will be helpful.
https://www.researchgate.net/post/Accuracy_assessment_for_NDVI
NDVI values if not match with your results you have to observe some ground truth before analysis and the time when data taken.
By real points observation on the ground
Come on you can check out your results with your original image by visual interpretation
Ground truth is the real comparision to check accuracy of most of the remote sense observations.
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