“…To extract the features of patches, patch-level classifiers have been trained based on transfer learning, with little attention given to the characteristics of patches [ 3 , 4 , 5 , 14 , 15 , 16 , 17 ]. Additionally, to improve the performance of a CNN model as a patch-level classifier, prior studies employed image modification techniques such as data augmentation [ 18 , 19 ], color transformation [ 20 , 21 ], and stain normalization [ 22 , 23 , 24 ]. The goals of image modification techniques are to amplify the number of patch images, extract the morphological features, and reduce the deviations across WSI scan devices.…”