labelme
Labelme is a graphical image annotation tool that supports Python users in creating polygonal annotations with various shapes like rectangles, circles, and lines. It offers image and video annotation capabilities and allows GUI customization for intuitive use. The tool supports exporting to VOC and COCO formats suitable for semantic and instance segmentation. Comprehensive guides ensure it is accessible to users across different operating systems, making it ideal for developing precise image annotations in machine learning applications.