During the follow-up process of using the OTB toolbox, I have encountered the following questions.
- After classification using the clustering algorithm ‘kmeansclassifier’ function, can kappa and classification accuracy be output directly? If not, do you need to use the ‘ComputeConfusionMatrix’ tool to generate it? If I use ‘ComputeConfusionMatrix’ tool, do I still need a truth map or shp file? If the relevant image does not have a truth map or shp file, how do I generate the overall accuracy and kappa value?
- Spectral-based classification of remote sensing images should be implemented using the relevant functions in the OTB toolbox. How are the specific steps implemented?