ARDIS: A Swedish Historical Handwritten Digit Dataset

This is a new image-based handwritten historical digit dataset named ARDIS (Arkiv Digital Sweden). The images in ARDIS dataset are extracted from 15.000 Swedish church records which were written by different priests with various handwriting styles in the nineteenth and twentieth centuries. The constructed dataset consists of three single digit datasets and one digit strings dataset. The digit strings dataset includes 10.000 samples in Red-Green-Blue (RGB) color space, whereas, the other datasets contain 7.600 single digit images in different color spaces. Figure 1 illustrates handwritten digit images from different datasets in ARDIS.

本数据集为一款全新的基于图像的手写历史数字数据集，命名为 ARDIS（Arkiv Digital Sweden）。ARDIS 数据集中的图像源自于 15,000 份瑞典教堂记录，这些记录由不同时代的牧师以各式各样的手写风格在十九世纪和二十世纪所撰写。构建的该数据集包含三个独立的手写单数字据集以及一个数字字符串数据集。数字字符串数据集包含 10,000 个样本，以红-绿-蓝（RGB）色彩空间呈现，而其他数据集则包含 7,600 张不同色彩空间下的单数字符图像。图 1 展示了 ARDIS 中不同数据集的手写数字图像。