isConfident method
true if there is confidence in this recognition, false otherwise.
There are two separate ways for there to be confidence, the first
is if the confidence is missing, which is indicated by a value of
-1. The second is if the confidence is greater than or equal
threshold
. If threshold
is not provided it defaults to 0.8.
Implementation
bool isConfident({double threshold = confidenceThreshold}) =>
confidence == missingConfidence || confidence >= threshold;