[SAMPLE] Nexdata | OCR Data | 500,000 Images| Computer Vision Data| Invoice Data| AI Training Data

1. Specifications
Data size : 500,000 images

Collecting environment : including shop plaque, stop board, poster, ticket, road sign, comic, cover picture, prompt/reminder, warning, packing instruction, menu, building sign, etc.

Diversity : including 20 languages, multiple natural scenes, multiple photographic angles (looking up angle, looking down angle, eye-level angle)

Device : cellphone, camera

Image parameter : the image data format is .jpg, and the annotation file data format is .json

Annotation content : line-level quadrilateral bounding box annotation and transcription for the texts

Accuracy : the error bound of each vertex of quadrilateral bounding box is within 5 pixels, which is a qualified annotation, the accuracy of bounding boxes is not less than 97%; the texts transcription accuracy is not less than 97%

2. About Nexdata
Nexdata owns off-the-shelf 200,000 hours of speech recognition data, 800TB of Annotated Imagery Data, about 2 billion pieces of Natural Language Processing (NLP) Data. These ready-to-go AI & ML Training Data support instant delivery, quickly improve the accuracy of AI models. For more details, please visit us at https://www.nexdata.ai/datasets/ocr?source=Datarade

1. 规格参数
数据规模：50万张图像
采集场景：涵盖店铺招牌、停车标识、海报、票据、道路路标、漫画、封面图、提示/警示语、包装说明、菜单、楼宇标识等各类场景
数据多样性：覆盖20种语言，包含多种自然场景，支持多种拍摄角度（仰拍、俯拍、平视拍摄）
采集设备：手机、相机
图像参数：图像数据格式为.jpg，标注文件数据格式为.json
标注内容：针对文本的行级四边形边界框标注与转录
标注精度：四边形边界框的每个顶点误差范围不超过5像素即为合格标注，边界框标注准确率不低于97%；文本转录准确率不低于97%

2. 关于Nexdata
Nexdata 拥有现成可用的20万小时语音识别数据、800TB标注图像数据，以及约20亿条自然语言处理（Natural Language Processing, NLP）数据。此类即开即用的人工智能与机器学习训练数据支持即时交付，可快速提升AI模型的准确率。如需了解更多详情，请访问：https://www.nexdata.ai/datasets/ocr?source=Datarade