Longjing tea classification dataset

This dataset is prepared for Longjing tea quality identification and classification by using computer vision. The dataset contains Longjing tea from three different origins: West Lake Zone （Wllj）, Qiantang Zone (Qtlj) and Yuezhou Zone (Yzlj). Longjing tea from each origin contains four grades, which are named 1-4 according to Arabic numerals. The tea grade of each image is judged by at least two experts. Small numbers represent high tea grade and good quality. The images in the dataset were captured using industrial camera under the same controlled environment. The label of every image is the folder name.