Boto3 InvalidParameterException
If you saw this exception in response to calling search_faces_by_image then it probably indicates that there were no detectable faces in the image that you provided. You can review a list of possible exceptions at API_SearchFacesByImage.
To handle this exception, you could write code like this:
import boto3rek = boto3.client('rekognition')def lookup_faces(image, collection_id): try: faces = rek.search_faces_by_image( CollectionId=collection_id, Image=image, FaceMatchThreshold=95 ) logger.info('faces detected: {}'.format(faces)) return faces except rek.exceptions.InvalidParameterException as e: logger.debug('no faces detected') return None
I found it in boto/cognito/identity/exceptions.py:
from boto.exception import BotoServerErrorclass InvalidParameterException(BotoServerError): pass
This is a misleading error by AWS, this error comes when the source image did not contain any detectable faces. Make sure your source image has a detectable face.