I am finding TP, TN, FP, FN (confusion matrix) of predicted and actual image. smapImg is the predicted/output image and gtImg is the actual/ground truth image.
TP = histc(smapImg(gtImg), 0:255);FP = histc(smapImg(~gtImg), 0:255);FN = histc(~smapImg(gtImg), 0:255);TN = histc(~smapImg(~gtImg), 0:255);
I am getting this error "First Input must be a real non-sparse numeric array" while computing FN and TN, while TP and FP are computing correctely. Please help.
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