Dataset - Annotation import and export

Picsellia allows you to create your Annotation by importing your own Annotation file on an existing DatasetVersion.

1. Annotation formats

Picsellia natively handles the following Annotation formats:

• COCO
• Pascal VOC
• YOLO
• ViaLabel

More documentation about those formats is available here

2. Import Annotation files

From the Assets overview, you can click on Annotations > Import to open the Annotation files import modal.

From this modal you must indicate:

• The format of the Annotation file
• The expected behavior of the DatasetVersion already contains Annotation created by your user (keep existing Annotation, replace with new Annotation, concatenate new and existing Annotation)
• The files containing Annotation related to the images composing the current DatasetVersion.
• The behavior if you import a Segmentation Annotation file, knowing that Picsellia can import those Annotation as Polygons or _Bounding Boxe_s.

If the files contain Annotation of images that are not part of the DatasetVersion, Picsellia will simply ignore them and only import the Annotation related to images that are part of the current DatasetVersion.

Then you just need to click on Import and the Annotation will be created on your DatasetVersion. You can now visualize through the Assets overview the Annotation (Shapes and Metadata)

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No need to setup DatasetVersion Detection Type and Labelmap

As the Detection Type and the Labelmap are contained in the Annotation files, they will be automatically setup on your Picsellia DatasetVersion during the import. For sure, after the import you can still create manually additional Label.

3. Edit Annotation

Once imported the Annotation can still be modified directly on Picsellia using the integrated Annotation Tool.

Annotation Tool documentation is available here.

4. Export Annotation

At any moment you can export the Annotation of all the Asset of an annotated DatasetVersion. You can choose the format of the Annotation you are about to export among COCO, PascalVOC, YOLO, and ViaLabel.

To do so, you can click on Annotations and choose the Annotation format. The file will be generated by Picsellia and downloaded on your machine. The Annotations export process can take several seconds depending on the DatasetVersion size so please be patient.

In case an Asset has more than one Annotation, it is the one displayed in the Details view that will be exported, meaning either the one in status Accepted or the most recently updated one.

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Personalize the Annotation export

For more customization in the export of Annotation, you can use the Python SDK

5. Duplicate Annotation

In case an Annotation has to be reproduced on all the unannotated Asset of a DatasetVersion, you can use the Duplicate button.

To do it properly, you need to select the annotated Asset of your DatasetVersion, for which the Annotation has to be duplicated and click on Duplicate. A modal will open, in this one, you just need to click on Duplicate as shown below:

Automatically, all the Asset of the current DatasetVersion that doesn't have Annotation yet will get the Annotation of the selected Asset. It means that the existing Annotation won't be overwritten.