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face_analyze.py
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face_analyze.py
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import boto3
import json
s3 = boto3.resource('s3')
client = boto3.client('rekognition')
def detect_faces():
detected_faces = client.index_faces(
CollectionId='faces',
Image={
'S3Object': {
'Bucket': 'wb-fa-images',
'Name': '_analyze.png'
}
},
ExternalImageId='TEMP',
DetectionAttributes=['DEFAULT']
)
return detected_faces
def create_detected_id_list(detected_faces):
id_list = []
for face in detected_faces['FaceRecords']:
id_list.append(face['Face']['FaceId'])
return id_list
def compare_images(id_list):
results = []
for id in id_list:
results.append(client.search_faces(
CollectionId='faces',
FaceId=id,
MaxFaces=10,
FaceMatchThreshold=80
))
return results
def generate_data_json(compare_result):
data_json = []
for item in compare_result:
face_matches = item.get('FaceMatches')
if len(face_matches) >= 1:
perfil = dict(name=face_matches[0]['Face']['ExternalImageId'],
faceId=face_matches[0]['Face']['FaceId'],
similarity=round(face_matches[0]['Similarity'], 2)
)
data_json.append(perfil)
return data_json
def deploy_data(data_json):
file = s3.Object('wb-fa-site', 'data.json')
file.put(Body=json.dumps(data_json))
def delete_collection_image(id_list):
client.delete_faces(
CollectionId='faces',
FaceIds=id_list
)
def main(event, context):
detected_faces = detect_faces()
detected_id_list = create_detected_id_list(detected_faces)
compare_result = compare_images(detected_id_list)
data_json = generate_data_json(compare_result)
deploy_data(data_json)
delete_collection_image(detected_id_list)
print(json.dumps(data_json, indent=2))