Biometric SDK
Introduction
MOSIP uses biometrics - fingerprint, iris, face - in registration and authentication processes. This requires specialized processing of biometrics data for biometric quality check and matching two biometric images. Biometric SDK consists of software libaries that provide these functions. Note that MOSIP platform does not include such an SDK.
Biometric SDK Functions
SDK Initialization
Shares information about the SDK and performs any one time activities including initialization of internal variables and algorithms.
Quality Checker
Checks the quality of input biometrics and returns quality score for the same.
Use Cases
When a biometric image is received by MOSIP in the registration client using a forced capture, this method is used to check the quality of the image
Server side validation of quality of biometric images uses this method
When external biometric images are received to be put on record this method is used to determine the quality of the received biometric image
Matcher
Matches the captured biometric record or a list of biometric records (based on single match or composite match), matches it against list of stored biometric records. It then returns a matching score against each stored biometric record or a composite matching score for the list of input biometric records.
Use Cases
Used for matching one or multiple modes of biometric received in an auth transaction with a list of biometrics record
Used for authentication of operators in offline mode
Used for prevention of erroneous submission of operator biometrics in place of registrant’s biometric on registration client
Match is expected to be capable of image-image, extract-extract and extract-image comparisons
Extractor
Extracts salient features and patterns of input biometric record to use in fast comparison. It returns the extracted biometric record.
Use Cases
Used to extract salient features and patterns of a biometric to use in fast comparison
In case of fingerprints this is called Minutiae and a standard representation of minutiae is an ISO template for FMR
Segmenter
Segments single biometric record into multiple biometric records and returns list of segmented biometric records. Eg: Split thumb slab into multiple fingers and eyes into left and right eye.
Use Cases
Used to split images into individual biometric segments when received from external sources
Converter
Converts images in all segments in the biometric record.
Biometric SDK integration points
Biometric SDK API Specification
Biometric Specification
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