Dataset of human skin and fingernails images for non-invasive haemoglobin level assessment

The dataset consists of RGB images of human fingers with clearly visible nail plates without artificial coatings, damaging and discoloration collected from 250 patients with known blood hemoglobin levels. The dataset is balanced by gender, with 128 male and 122 female patients. The age range of the patients spans from 18 to 95 years old, with an average age of 56 ± 20 years old. The data is anonymized and does not contain indirect patient identifiers such as age or gender. The dataset includes a metadata.csv file which contains patient information such as patient ID, measurement date, Hb level, and bounding box coordinates for the patient's nails and skin areas. The dataset also includes a folder with photographs taken for each patient, with the file format photo_data/PATIENT_ID.jpg.本数据集包含250名已知血液血红蛋白水平患者的人类手指RGB图像，所有图像均清晰展示了无人工涂层、无损伤及变色的指甲板（nail plates）。该数据集按性别均衡分布，其中男性患者128名，女性患者122名。患者年龄跨度为18至95岁，平均年龄为56±20岁。所有数据均已完成匿名化处理，不包含年龄、性别等间接患者识别信息。数据集包含metadata.csv文件，其中记录了患者ID、检测日期、血红蛋白（Hb）水平以及患者指甲与皮肤区域的边界框坐标等患者相关信息。数据集还包含一个存储每位患者拍摄照片的文件夹，照片文件存储路径为photo_data/PATIENT_ID.jpg，文件格式为JPEG。