Network.AWS.Rekognition.CompareFaces

Compares a face in the source input image with each face detected in the target input image.

In response, the operation returns an array of face matches ordered by similarity score with the highest similarity scores first. For each face match, the response provides a bounding box of the face and confidence value (indicating the level of confidence that the bounding box contains a face). The response also provides a similarity score, which indicates how closely the faces match.

In addition to the face matches, the response returns information about the face in the source image, including the bounding box of the face and confidence value.

For an example, see 'get-started-exercise-compare-faces'

This operation requires permissions to perform the rekognition:CompareFaces action.

Creating a Request

compareFaces

Arguments

:: Image

cfSourceImage

-> Image

cfTargetImage

-> CompareFaces

Creates a value of CompareFaces with the minimum fields required to make a request.

Use one of the following lenses to modify other fields as desired:

• cfSimilarityThreshold - The minimum level of confidence in the match you want included in the result.
• cfSourceImage - Source image either as bytes or an Amazon S3 object
• cfTargetImage - Target image either as bytes or an Amazon S3 object

data CompareFaces

See: compareFaces smart constructor.

Instances

Eq CompareFaces

Methods

(==) :: CompareFaces -> CompareFaces -> Bool

(/=) :: CompareFaces -> CompareFaces -> Bool

Data CompareFaces

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> CompareFaces -> c CompareFaces

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CompareFaces

toConstr :: CompareFaces -> Constr

dataTypeOf :: CompareFaces -> DataType

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c CompareFaces)

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CompareFaces)

gmapT :: (forall b. Data b => b -> b) -> CompareFaces -> CompareFaces

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CompareFaces -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CompareFaces -> r

gmapQ :: (forall d. Data d => d -> u) -> CompareFaces -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> CompareFaces -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> CompareFaces -> m CompareFaces

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CompareFaces -> m CompareFaces

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CompareFaces -> m CompareFaces

Read CompareFaces

Methods

readsPrec :: Int -> ReadS CompareFaces

readList :: ReadS [CompareFaces]

readPrec :: ReadPrec CompareFaces

readListPrec :: ReadPrec [CompareFaces]

Show CompareFaces

Methods

showsPrec :: Int -> CompareFaces -> ShowS

show :: CompareFaces -> String

showList :: [CompareFaces] -> ShowS

Generic CompareFaces

Associated Types

type Rep CompareFaces :: * -> *

Methods

from :: CompareFaces -> Rep CompareFaces x

to :: Rep CompareFaces x -> CompareFaces

Hashable CompareFaces

Methods

hashWithSalt :: Int -> CompareFaces -> Int

hash :: CompareFaces -> Int

ToJSON CompareFaces

Methods

toJSON :: CompareFaces -> Value

toEncoding :: CompareFaces -> Encoding

toJSONList :: [CompareFaces] -> Value

toEncodingList :: [CompareFaces] -> Encoding

NFData CompareFaces

Methods

rnf :: CompareFaces -> ()

AWSRequest CompareFaces

Associated Types

type Rs CompareFaces :: *

Methods

request :: CompareFaces -> Request CompareFaces

response :: MonadResource m => Logger -> Service -> Proxy * CompareFaces -> ClientResponse -> m (Response CompareFaces)

ToPath CompareFaces

Methods

toPath :: CompareFaces -> ByteString

ToHeaders CompareFaces

Methods

toHeaders :: CompareFaces -> [Header]

ToQuery CompareFaces

Methods

toQuery :: CompareFaces -> QueryString

type Rep CompareFaces

type Rep CompareFaces = D1 (MetaData "CompareFaces" "Network.AWS.Rekognition.CompareFaces" "amazonka-rekognition-1.4.5-JLr9ZFBNFwFGjCyEdV0gv" False) (C1 (MetaCons "CompareFaces'" PrefixI True) ((:*:) (S1 (MetaSel (Just Symbol "_cfSimilarityThreshold") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 (Maybe Double))) ((:*:) (S1 (MetaSel (Just Symbol "_cfSourceImage") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Image)) (S1 (MetaSel (Just Symbol "_cfTargetImage") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 Image)))))

type Rs CompareFaces

type Rs CompareFaces = CompareFacesResponse

Request Lenses

cfSimilarityThreshold :: Lens' CompareFaces (Maybe Double)

The minimum level of confidence in the match you want included in the result.

cfSourceImage :: Lens' CompareFaces Image

Source image either as bytes or an Amazon S3 object

cfTargetImage :: Lens' CompareFaces Image

Target image either as bytes or an Amazon S3 object

Destructuring the Response

compareFacesResponse

Arguments

:: Int

cfrsResponseStatus

-> CompareFacesResponse

Creates a value of CompareFacesResponse with the minimum fields required to make a request.

Use one of the following lenses to modify other fields as desired:

• cfrsFaceMatches - Provides an array of CompareFacesMatch objects. Each object provides the bounding box, confidence that the bounding box contains a face, and the similarity between the face in the bounding box and the face in the source image.
• cfrsSourceImageFace - The face from the source image that was used for comparison.
• cfrsResponseStatus - -- | The response status code.

data CompareFacesResponse

See: compareFacesResponse smart constructor.

Instances

Eq CompareFacesResponse

Methods

(==) :: CompareFacesResponse -> CompareFacesResponse -> Bool

(/=) :: CompareFacesResponse -> CompareFacesResponse -> Bool

Data CompareFacesResponse

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> CompareFacesResponse -> c CompareFacesResponse

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c CompareFacesResponse

toConstr :: CompareFacesResponse -> Constr

dataTypeOf :: CompareFacesResponse -> DataType

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c CompareFacesResponse)

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c CompareFacesResponse)

gmapT :: (forall b. Data b => b -> b) -> CompareFacesResponse -> CompareFacesResponse

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> CompareFacesResponse -> r

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> CompareFacesResponse -> r

gmapQ :: (forall d. Data d => d -> u) -> CompareFacesResponse -> [u]

gmapQi :: Int -> (forall d. Data d => d -> u) -> CompareFacesResponse -> u

gmapM :: Monad m => (forall d. Data d => d -> m d) -> CompareFacesResponse -> m CompareFacesResponse

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> CompareFacesResponse -> m CompareFacesResponse

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> CompareFacesResponse -> m CompareFacesResponse

Read CompareFacesResponse

Methods

readsPrec :: Int -> ReadS CompareFacesResponse

readList :: ReadS [CompareFacesResponse]

readPrec :: ReadPrec CompareFacesResponse

readListPrec :: ReadPrec [CompareFacesResponse]

Show CompareFacesResponse

Methods

showsPrec :: Int -> CompareFacesResponse -> ShowS

show :: CompareFacesResponse -> String

showList :: [CompareFacesResponse] -> ShowS

Generic CompareFacesResponse

Associated Types

type Rep CompareFacesResponse :: * -> *

Methods

from :: CompareFacesResponse -> Rep CompareFacesResponse x

to :: Rep CompareFacesResponse x -> CompareFacesResponse

NFData CompareFacesResponse

Methods

rnf :: CompareFacesResponse -> ()

type Rep CompareFacesResponse

type Rep CompareFacesResponse = D1 (MetaData "CompareFacesResponse" "Network.AWS.Rekognition.CompareFaces" "amazonka-rekognition-1.4.5-JLr9ZFBNFwFGjCyEdV0gv" False) (C1 (MetaCons "CompareFacesResponse'" PrefixI True) ((:*:) (S1 (MetaSel (Just Symbol "_cfrsFaceMatches") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 (Maybe [CompareFacesMatch]))) ((:*:) (S1 (MetaSel (Just Symbol "_cfrsSourceImageFace") NoSourceUnpackedness SourceStrict DecidedStrict) (Rec0 (Maybe ComparedSourceImageFace))) (S1 (MetaSel (Just Symbol "_cfrsResponseStatus") NoSourceUnpackedness SourceStrict DecidedUnpack) (Rec0 Int)))))

Response Lenses

cfrsFaceMatches :: Lens' CompareFacesResponse [CompareFacesMatch]

Provides an array of CompareFacesMatch objects. Each object provides the bounding box, confidence that the bounding box contains a face, and the similarity between the face in the bounding box and the face in the source image.

cfrsSourceImageFace :: Lens' CompareFacesResponse (Maybe ComparedSourceImageFace)

The face from the source image that was used for comparison.

cfrsResponseStatus :: Lens' CompareFacesResponse Int

• - | The response status code.