How to guide: Annotation tool
Tool view
Purpose of tool
Select regions of interest (ROIs) in images.
Contents
How to draw ROIs
Output results
How to draw ROIs
To begin drawing an ROI, click on the Add ROI button in the right-hand panel.
Click on the image around the edge of a region that needs to be annotated. The annotator will drop a vertex at each point clicked. Vertices can then be continuously dropped around the edges of the ROI to define the enclosed region.
To select multiple ROIs in the same image, click on the add ROI button again and follow the same procedure as before.
Previously drawn ROIs can be edited by selecting their corresponding Edit nodes button.
An ROI can be removed by clicking on the delete icon shown next to that ROI.
Saving the results
Once the ROIs have been selected, the coordinates of the bounding regions can be saved on the cloud (CODI) or to the local computer in a JSON file by clicking on the save button on the top right of the right hand panel. Below is the JSON representation of the two ROIs shown above.
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