Diff two images
diff_image = abs(prediction_mask - true_mask)Count pixels that exactly match between two images
diff_image = abs(prediction_mask - true_mask)
matches = 1.0 * (diff_image == 0)
matches_count = np.sum(matches)Count prediction pixels that do not match truth-mask pixels
diff_image = abs(prediction_mask - true_mask)
unpaired_pred_msk = 1.0 * (prediction_mask>0) * (diff_img>0)
un_matched_pred_count = np.sum(unpaired_pred_msk)