The output of this type of annotation takes the form of a greyscale PNG mask for each image, where the value of a pixel represents the category to which it has been assigned.

The location of the raster mask image is listed in the output JSON file under the mask_url key:

aws s3api get-object --bucket samahub3 --key "clients/23/external/projects/8616/tasks/6125acb53928ed00e6fc55fa/outputs/Image Raster/d1bdde4b-3d01-47d3-8536-4952eb871969.png" raster-mask.png
        

The linked Colab notebook contains Python code that shows you how to get your latest deliveries, get temporary AWS credentials, and download the raster masks.