RectLabel is an offline image annotation tool for object detection and segmentation.
Label polygons using Segment Anything models
Label pixels using Segment Anything models
Label cubic bezier curves, line segments, and points
Label oriented bounding boxes in aerial images
Label keypoints with a skeleton
Label pixels with brushes and superpixels
Automatic labeling using Core ML models
Automatic text recognition using Vision framework
Settings for objects, attributes, hotkeys, and labeling fast
Search object, attribute, and image names in a gallery view
Export to COCO, Labelme, CreateML, YOLO, DOTA, and CSV formats
Export indexed color mask image and grayscale mask images
Video to image frames, augment images, etc.
How to use
Post the problem to our Github issues page.
Have questions? Send an email to our support team.
- Improved so that when converting video to image frames, you can set frames per second.
Ratings and Reviews
Awesome Annotation App
This app has so many capabilities and it's very easy to use. I mainly recommend this app over others becuse it can 1) output in COCO format (Json file), 2) can do keypoint and mask annotations and 3) can overlay depth maps to images. I love how there are so many shortcuts for most actions, and I can always change the shortcuts to my liking. I also use this app with Apple's side car to label on my iPad. I gave a tutorial- "how to use RectLabel" to 8 of my undergrads, and they all thoguht it was intuitive and easy to use. Customer service has been responsive, super helpful and has always addressed a lot of questions/concerns. The app is ALWAYS getting new bells and whistles added to it. The company listens to my feedback/needs and is willing to add new capabilities accordingly. I am very pleased with RectLabel, and would highly recommend it.
Doesn't allow you to change classes
When annotating you cannot change classes. Take the proper steps in the UI and it still won't change the annotations class label. Makes the application useless.
Developer Response ,
Thanks for writing the review and we apologize that changing the object class does not work for you. If you were using 1-click buttons on the label dialog, the problem was fixed in the latest version. For other cases, could you write the problem on our Github issues page?
Data Not Collected
The developer does not collect any data from this app.
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- Ryo Kawamura
- 31.1 MB
- Developer Tools
- Requires macOS 10.13 or later.
English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
- © 2017-2023 RectLabel
Up to six family members can use this app with Family Sharing enabled.