YOLOv5 Instance Segmentation using Sahi COCO to YOLO converter.

[OttomanZ]

Hi,
I have a question of the sahi coco to yolo converter supports instance segmentation format for YOLOv5 or would it normalize them into bounding boxes?

sahi coco yolov5 --image_dir dir/to/images --dataset_json_path dataset.json  --train_split 0.9

Since YOLOv5 now officially supports Instance Segmentation as well, adding this would be quite good. Does this need to be implemented or is this already implemented?

My COCO JSON file has some objects in bounding boxes and others in polygons as follows, I am attaching the file here:

{"info": {"image_root": "./images"}, "images": [{"id": 0, "width": 1654, "height": 2338, "file_name": "0.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 6, "width": 1654, "height": 2338, "file_name": "6.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 7, "width": 1653, "height": 2338, "file_name": "7.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 1, "width": 1654, "height": 2339, "file_name": "1.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 2, "width": 1653, "height": 2338, "file_name": "2.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 3, "width": 1654, "height": 2338, "file_name": "3.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 4, "width": 2339, "height": 1654, "file_name": "4.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 5, "width": 1654, "height": 2339, "file_name": "5.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 9, "width": 1654, "height": 2338, "file_name": "9.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 8, "width": 1654, "height": 2338, "file_name": "8.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 13, "width": 1654, "height": 2338, "file_name": "13.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 10, "width": 1653, "height": 2338, "file_name": "10.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 15, "width": 3307, "height": 2339, "file_name": "15.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 12, "width": 1654, "height": 2338, "file_name": "12.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 16, "width": 3307, "height": 2338, "file_name": "16.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 11, "width": 1653, "height": 2338, "file_name": "11.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 14, "width": 1654, "height": 2339, "file_name": "14.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 17, "width": 1654, "height": 2338, "file_name": "17.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 19, "width": 1653, "height": 2338, "file_name": "19.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 20, "width": 1653, "height": 2338, "file_name": "20.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 21, "width": 1653, "height": 2338, "file_name": "21.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 18, "width": 3307, "height": 2338, "file_name": "18.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 22, "width": 1654, "height": 2339, "file_name": "22.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 25, "width": 1654, "height": 2338, "file_name": "25.jpg", "license": null, "flickr_url": null, "coco_url": null}, {"id": 23, "width": 1654, "height": 2338, "file_name": "23.jpg", 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"isthing": 1}, {"id": 5, "name": "barcode", "supercategory": "all", "isthing": 1}, {"id": 6, "name": "desc", "supercategory": "all", "isthing": 1}, {"id": 7, "name": "packing", "supercategory": "all", "isthing": 1}, {"id": 8, "name": "qtyunit", "supercategory": "all", "isthing": 1}]}

[OttomanZ]

@obss Full Link to COCO JSON file https://drive.google.com/file/d/14Xzmg9gTfvdZdSUG5cgqXPK3QCBscf2O/view?usp=sharing

I have exported this via. the LabelBox COCO JSON Export Feature. 👍

[OttomanZ]

Are these points Bounding Boxes or Masks, I have added masks with 4 keypoints according to my use-case. 👍

[lidapengpeng]

Have you implemented SAHI-based YOLOv5 instance segmentation?

[fcakyon]

SAHI coco to yolov5 converter currently does not support instance segmentation. We are open to any PRs :)

[OttomanZ]

So, can we convert this question into a PR.

[fcakyon]

You can open a pull request to this repo with your implementation 👍