• Create your conda/virtual environment and activate it.
• Install PyTorch 1.7.1 with CUDA support if your GPU supports it.
• Install the remaining requirements with pip install -r requirements.

• The file config.py contains app configuration (e.g., dataset path, batch size, cuda usage, etc.).
• When finished an experiment, we recommend pressing both the Save Masks, to map the annotation back to their respective image and Save (Pickle), to store the app's current state.

Here are the required steps to reproduce a simple demo with the subset from DAVIS as in the original article.

• The DAVIS dataset subset and its edge detection can be downloaded here.
• Pretrained weights from ImageNet can be download here.
• The config.py must be updated accordingly to the dataset paths.
• Run python src/main.py.

1. Click Execute Projection to start the process;
2. Edit the Current label combo box to add the annotation labels;
3. Interact with the canvas to annotate and press Confirm (Cancel) to confirm (cancel) the current annotation;
4. The Labeled Invisible checkbox forces annotated segments to be invisible;
5. The Select Subset checkbox enables the behavior of computing UMAP in a subset of data when confirming the selection of a few segments;
6. Ctrl (Command in Mac) + Scroll zoom in and out.
7. Double-clicking a segment in the projection space highlights it in the image space;
8. Clicking with the right and left mouse button on the highlighted segment in the image space add markers to it, and pressing Split splits the regions given these cues;
9. The remaining widgets are for recomputing (or previewing) the segmentation of the displayed image;
10. Double-clicking a segment in the image focus to it in the projection canvas;
11. The Execute Metric Learn button optimizes the network embedding given the annotated segments, this might take a few minutes without GPU;
12. The spinbox with an integer selects the number of samples to embed, this can be used to request more data;
13. The button Save Masks saves the current annotations into images, background labels, and unlabeled nodes are saved as 0.
14. The button Save (Pickle) stores the experiment's current state into the file indicated in config.py (the default is app.pickle) and displays some statistics about the recent run.

Additional interface instructions can be accessed through the Help file menu on the top left corner.

TBD