json_annotation_tool 一个基于 Python + PyQt5 的桌面应用，用于浏览并编辑与图像配套的 JSON 格式边界框标注。 支持批量操作，一键增删改，极大提升 Labelme 标注后的后处理效率。

Image Polygonal Annotation with Python (polygon, rectangle, circle, line, point and image-level flag annotation).

We present the Time Series Event Annotator (TSEA), a graphical user interface annotation tool for time series data that enables rapid visualization, labeling, and annotation of signals, including ...

Guido van Rossum, best known as designer of the Python programming language, recently sent out a proposal on the python-ideas mailing list for adding type annotations to Python function declarations.