OOD-GrainSet-Maize train/test.txt and category information

OOD-GrainSet-maize for ECAI2023 (Identifying the Defective: Detecting Damaged Grains for Cereal Appearance Inspection) - num2category.text -- the number of folders corresponding to the category of grain type - maize_set1_train.txt maize_set1_test.txt train/test files for set1, indicating the image names used for training/test - maize_set2_train.txt maize_set2_test.txt train/test files for set2, indicating the image names used for training/test