Brazilian Coin Detection Dataset

This dataset is a collection of images and their respective labels containing examples of multiple Brazilian coins, the primary purpose is to support the development of Computer Vision techniques for automatic detection of such objects, i.e., localization and classification tasks. It contains coins of R$ 0.05, 0.10, 0.25, 0.50 and 1.00 in Brazilian currency from the 2nd family, as manufactured by Casa da Moeda (http://www.casadamoeda.gov.br) since 2010. The samples were collected with a mobile phone and contain multiple coins placed upon a flat white A4 sheet of paper. Labels were obtained from a group with several individuals from both sexes and detailed reviewed. Each label has a circular or polygon shape and denotes the corresponding value in cents of the coin it is related to. This dataset is an improvement from Brazilian Coins (available at https://www.kaggle.com/lgmoneda/br-coins) where location labels were created.

本数据集汇聚了一系列图像及其相应的标签，其中包含多种巴西货币的实例。其主要目标在于支持计算机视觉技术的开发，特别是针对此类对象的自动检测任务，例如定位与分类。数据集内收录了自2010年起由巴西造币厂（http://www.casadamoeda.gov.br）生产的第二系列巴西货币，包括面值为0.05、0.10、0.25、0.50及1.00雷亚尔的硬币。样本采集采用智能手机进行，并展示了多枚硬币置于平坦的白色A4纸张之上的情形。标签由一组包含不同性别个体的群体提供，并经过细致的审查。每个标签呈现圆形或多边形形状，用以指示与其相关的硬币的相应面值（以分计）。相较于巴西货币数据集（可在https://www.kaggle.com/lgmoneda/br-coins获取），本数据集进行了优化，其中增加了位置标签。