Yolo_mark
GUI for marking bounded boxes of objects in images
...Class identifiers can be selected from the keyboard, while shortcuts speed up navigation between images and repeated annotation tasks. The project generates image-coordinate files and a training image list in the format expected by Darknet. It can also extract every specified frame interval from a video before manual labeling begins. OpenCV support, sample configuration files, object tracking, coordinate display, and training instructions make it a compact workflow for legacy YOLO dataset creation.