[ aws . rekognition ]
search-faces¶
Description¶
For a given input face ID, searches for matching faces in the collection the face belongs to. You get a face ID when you add a face to the collection using the IndexFaces operation. The operation compares the features of the input face with faces in the specified collection.
Note
You can also search faces without indexing faces by using the SearchFacesByImage operation.
The operation response returns an array of faces that match, ordered by similarity score with the highest similarity first. More specifically, it is an array of metadata for each face match that is found. Along with the metadata, the response also includes a confidence value for each face match, indicating the confidence that the specific face matches the input face.
For an example, see Searching for a face using its face ID in the Amazon Rekognition Developer Guide.
This operation requires permissions to perform the rekognition:SearchFaces action.
See also: AWS API Documentation
Synopsis¶
search-faces
--collection-id <value>
--face-id <value>
[--max-faces <value>]
[--face-match-threshold <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]
Options¶
--collection-id (string)
ID of the collection the face belongs to.
--face-id (string)
ID of a face to find matches for in the collection.
--max-faces (integer)
Maximum number of faces to return. The operation returns the maximum number of faces with the highest confidence in the match.
--face-match-threshold (float)
Optional value specifying the minimum confidence in the face match to return. For example, don’t return any matches where confidence in matches is less than 70%. The default value is 80%.
--cli-input-json | --cli-input-yaml (string)
Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.
--generate-cli-skeleton (string)
Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.
Global Options¶
--debug (boolean)
Turn on debug logging.
--endpoint-url (string)
Override command’s default URL with the given URL.
--no-verify-ssl (boolean)
By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.
--no-paginate (boolean)
Disable automatic pagination.
--output (string)
The formatting style for command output.
json
text
table
yaml
yaml-stream
--query (string)
A JMESPath query to use in filtering the response data.
--profile (string)
Use a specific profile from your credential file.
--region (string)
The region to use. Overrides config/env settings.
--version (string)
Display the version of this tool.
--color (string)
Turn on/off color output.
on
off
auto
--no-sign-request (boolean)
Do not sign requests. Credentials will not be loaded if this argument is provided.
--ca-bundle (string)
The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.
--cli-read-timeout (int)
The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.
--cli-connect-timeout (int)
The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.
--cli-binary-format (string)
The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb:// will always be treated as binary and use the file contents directly regardless of the cli-binary-format setting. When using file:// the file contents will need to properly formatted for the configured cli-binary-format.
base64
raw-in-base64-out
--no-cli-pager (boolean)
Disable cli pager for output.
--cli-auto-prompt (boolean)
Automatically prompt for CLI input parameters.
--no-cli-auto-prompt (boolean)
Disable automatically prompt for CLI input parameters.
Examples¶
Note
To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.
Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .
To search for faces in a collection that match a face ID.
The following search-faces command searches for faces in a collection that match the specified face ID.
aws rekognition search-faces \
--face-id 8d3cfc70-4ba8-4b36-9644-90fba29c2dac \
--collection-id MyCollection
Output:
{
"SearchedFaceId": "8d3cfc70-4ba8-4b36-9644-90fba29c2dac",
"FaceModelVersion": "3.0",
"FaceMatches": [
{
"Face": {
"BoundingBox": {
"Width": 0.48166701197624207,
"Top": 0.20999999344348907,
"Left": 0.21250000596046448,
"Height": 0.36125001311302185
},
"FaceId": "bd4ceb4d-9acc-4ab7-8ef8-1c2d2ba0a66a",
"ExternalImageId": "image1.jpg",
"Confidence": 99.99949645996094,
"ImageId": "5e1a7588-e5a0-5ee3-bd00-c642518dfe3a"
},
"Similarity": 99.30997467041016
},
{
"Face": {
"BoundingBox": {
"Width": 0.18562500178813934,
"Top": 0.1618019938468933,
"Left": 0.5575000047683716,
"Height": 0.24770599603652954
},
"FaceId": "ce7ed422-2132-4a11-ab14-06c5c410f29f",
"ExternalImageId": "example-image.jpg",
"Confidence": 99.99340057373047,
"ImageId": "8d67061e-90d2-598f-9fbd-29c8497039c0"
},
"Similarity": 99.24862670898438
},
{
"Face": {
"BoundingBox": {
"Width": 0.18562500178813934,
"Top": 0.1618019938468933,
"Left": 0.5575000047683716,
"Height": 0.24770599603652954
},
"FaceId": "13692fe4-990a-4679-b14a-5ac23d135eab",
"ExternalImageId": "image3.jpg",
"Confidence": 99.99340057373047,
"ImageId": "8df18239-9ad1-5acd-a46a-6581ff98f51b"
},
"Similarity": 99.24862670898438
},
{
"Face": {
"BoundingBox": {
"Width": 0.5349419713020325,
"Top": 0.29124999046325684,
"Left": 0.16389399766921997,
"Height": 0.40187498927116394
},
"FaceId": "745f7509-b1fa-44e0-8b95-367b1359638a",
"ExternalImageId": "image9.jpg",
"Confidence": 99.99979400634766,
"ImageId": "67a34327-48d1-5179-b042-01e52ccfeada"
},
"Similarity": 96.73158264160156
},
{
"Face": {
"BoundingBox": {
"Width": 0.5307819843292236,
"Top": 0.2862499952316284,
"Left": 0.1564060002565384,
"Height": 0.3987500071525574
},
"FaceId": "2eb5f3fd-e2a9-4b1c-a89f-afa0a518fe06",
"ExternalImageId": "image10.jpg",
"Confidence": 99.99970245361328,
"ImageId": "3c314792-197d-528d-bbb6-798ed012c150"
},
"Similarity": 96.48291015625
},
{
"Face": {
"BoundingBox": {
"Width": 0.5074880123138428,
"Top": 0.3774999976158142,
"Left": 0.18302799761295319,
"Height": 0.3812499940395355
},
"FaceId": "086261e8-6deb-4bc0-ac73-ab22323cc38d",
"ExternalImageId": "image6.jpg",
"Confidence": 99.99930572509766,
"ImageId": "ae1593b0-a8f6-5e24-a306-abf529e276fa"
},
"Similarity": 96.43287658691406
},
{
"Face": {
"BoundingBox": {
"Width": 0.5574039816856384,
"Top": 0.37187498807907104,
"Left": 0.14559100568294525,
"Height": 0.4181250035762787
},
"FaceId": "11c4bd3c-19c5-4eb8-aecc-24feb93a26e1",
"ExternalImageId": "image5.jpg",
"Confidence": 99.99960327148438,
"ImageId": "80739b4d-883f-5b78-97cf-5124038e26b9"
},
"Similarity": 95.25305938720703
},
{
"Face": {
"BoundingBox": {
"Width": 0.5773710012435913,
"Top": 0.34437501430511475,
"Left": 0.12396000325679779,
"Height": 0.4337500035762787
},
"FaceId": "57189455-42b0-4839-a86c-abda48b13174",
"ExternalImageId": "image8.jpg",
"Confidence": 100.0,
"ImageId": "0aff2f37-e7a2-5dbc-a3a3-4ef6ec18eaa0"
},
"Similarity": 95.22837829589844
}
]
}
For more information, see Searching for a Face Using Its Face ID in the Amazon Rekognition Developer Guide.
Output¶
SearchedFaceId -> (string)
ID of the face that was searched for matches in a collection.
FaceMatches -> (list)
An array of faces that matched the input face, along with the confidence in the match.
(structure)
Provides face metadata. In addition, it also provides the confidence in the match of this face with the input face.
Similarity -> (float)
Confidence in the match of this face with the input face.
Face -> (structure)
Describes the face properties such as the bounding box, face ID, image ID of the source image, and external image ID that you assigned.
FaceId -> (string)
Unique identifier that Amazon Rekognition assigns to the face.
BoundingBox -> (structure)
Bounding box of the face.
Width -> (float)
Width of the bounding box as a ratio of the overall image width.
Height -> (float)
Height of the bounding box as a ratio of the overall image height.
Left -> (float)
Left coordinate of the bounding box as a ratio of overall image width.
Top -> (float)
Top coordinate of the bounding box as a ratio of overall image height.
ImageId -> (string)
Unique identifier that Amazon Rekognition assigns to the input image.
ExternalImageId -> (string)
Identifier that you assign to all the faces in the input image.
Confidence -> (float)
Confidence level that the bounding box contains a face (and not a different object such as a tree).
IndexFacesModelVersion -> (string)
The version of the face detect and storage model that was used when indexing the face vector.
FaceModelVersion -> (string)
Version number of the face detection model associated with the input collection (
CollectionId).