Uncertainty score

The API returns a confidence score of the cutout through the HTTP header x-uncertainty-score.

The uncertainty score is a number between 0 and 1:

• 0 means the model is very confident that the cutout is accurate

• 1 means the model is unsure.

For instance, shoes on a shoe box might give a higher uncertainty score as the model is unsure what to segment (shoes, box or both):

High uncertainty score: between 0.7 and 1	Low uncertainty score: between 0 and 0.3

Please note that the uncertainty score is not guaranteed to be stable over time: the same image might yield a different uncertainty score in the future.

In some cases, we might not be able to able to return an uncertainty score (e.g. if an image contains humans), in that case the value -1 will be returned.