Cedar and cypress pollen image dataset from routine Durham slides (Nagano, Japan)

This record provides the dataset used in our study for morphology-based classification of Japanese cedar (Cryptomeria japonica) and Japanese cypress (Chamaecyparis obtusa) pollen on routine Durham slides in Nagano, Japan. Files:- pollen_images_1480_5classes.zip: 1,480 cropped particle images (JPG) organized into five classes (cedar, cedar_brst, cypre, cypre_brst, dust).- features_labels_5classes.csv: feature table with filenames, class labels (type), and engineered descriptors used for model training/evaluation.- README.txt: file structure and filename convention.