BQAT SDK Wrapper

This service acts as a wrapper over BQAT's (Biometric Quality Assessment Tool) stateless API to get the quality parameter along with other metrics for analysis of a given biometric modality like Fingerprint, Face, Iris for data formats type such as JP2000 and WSQ.

This wrapper follows MOSIP Biometric SDK API Specification.

Set Up

In order to run this application you need to first setup or configure the beloww properties in the application.properties file.

bqat.server.ipaddress=(host)
bqat.server.port=:(port)
bqat.server.path=/base64?urlsafe=true
bqat.content.type=application/json
bqat.content.charset=utf-8
bqat.jsonkey.finger.quality.score=NFIQ2
bqat.jsonkey.iris.quality.score=quality
bqat.jsonkey.face.quality.score=quality
bqat.json.results=results

Run as Docker

Pull Docker Image

Pull the BAQT stateless API docker image from docker hub.

docker pull ghcr.io/biometix/bqat-stateless:latest

Run Docker Image

Use the below commande to run the docker image.

docker compose up -d

Check Service Status

Call the below endpoint from your browser to verify if the service is running. http://{host}:8848/docs/

Example: For localhost call, http://localhost:8848/docs

You should see the below response,

BAQT Stateless API

Sample Request

Request URL: http://localhost:8848/base64?urlsafe=true

Request Body:

{
  "modality": "iris",
  "id": "uniqueid",
  "type": "jp2",
  "data": "base64URLEncodedBiometricData",
  "requestTime": "2023-04-27T04:30:37.131147300",
  "version": "1.0.0"
}

Sample Response Per Modality

Face

{
	"results": {
		"file": "face_1682599598212.jp2",
		"background_deviation": "7.95134",
		"background_grayness": "52",
		"blur": "9.29379",
		"blur_face": "8.29874",
		"focus": "7848.72",
		"focus_face": "11311.2",
		"openbr_IPD": "64",
		"openbr_confidence": "1",
		"opencv_IPD": "60",
		"opencv_eye_count": "2",
		"opencv_face_found": "1",
		"opencv_face_height": "164",
		"opencv_face_width": "164",
		"opencv_frontal_face_found": "1",
		"opencv_landmarks_count": "4",
		"opencv_mouth_count": "1",
		"opencv_nose_count": "1",
		"opencv_profile_face_found": "0",
		"over_exposure": "0.0167188",
		"over_exposure_face": "0.0422739",
		"quality": "9.68888",
		"sap_code": "2",
		"skin_ratio_face": "0.822873",
		"skin_ratio_full": "0.434818",
		"image_area": "76800",
		"image_channels": "3",
		"image_height": "320",
		"image_ratio": "0.75",
		"image_width": "240",
		"openbr_left_eye_x": "151",
		"openbr_left_eye_y": "152",
		"openbr_right_eye_x": "87",
		"openbr_right_eye_y": "152",
		"opencv_face_center_of_mass_x": "119.742",
		"opencv_face_center_of_mass_y": "192.822",
		"opencv_face_offset_x": "0.00833333",
		"opencv_face_offset_y": "-0.2",
		"opencv_face_x": "39",
		"opencv_face_y": "110",
		"opencv_left_eye_x": "150",
		"opencv_left_eye_y": "153",
		"opencv_mouth_x": "116",
		"opencv_mouth_y": "234",
		"opencv_nose_x": "120",
		"opencv_nose_y": "193",
		"opencv_right_eye_x": "90",
		"opencv_right_eye_y": "153"
	},
	"engine": "BQAT-core 1.2.0 beta",
	"modality": "face",
	"id": "face_1682599598212",
	"timestamp": "2023-04-27 12:46:40.106507"
}

Fingerprint

{
	"results": {
		"file": "fingerprint_Right IndexFinger_1682599605621.jp2",
		"Width": 275,
		"Height": 400,
		"NFIQ2": "84",
		"Quantized": "0",
		"Resampled": "0",
		"UniformImage": "94.17070",
		"EmptyImageOrContrastTooLow": "185.25873",
		"FingerprintImageWithMinutiae": "47",
		"SufficientFingerprintForeground": "79625",
		"EdgeStd": 1.2197387797210527,
		"converted": "jp2 -> png"
	},
	"engine": "BQAT-core 1.2.0 beta",
	"modality": "fingerprint",
	"id": "fingerprint_Right IndexFinger_1682599605621",
	"timestamp": "2023-04-27 12:46:45.689680"
}

Iris

{
	"results": {
		"file": "iris_Left_1682599612619.jp2",
		"quality": "77",
		"contrast": "53",
		"iris_diameter": "264",
		"iris_pupil_gs": "23.6313",
		"iris_sclera_gs": "48",
		"normalized_contrast": "1",
		"normalized_iris_diameter": "1",
		"normalized_iris_pupil_gs": "0.936312",
		"normalized_iris_sclera_gs": "1",
		"normalized_percent_visible_iris": "1",
		"normalized_sharpness": "1",
		"percent_visible_iris": "91",
		"sharpness": "169",
		"image_height": "301",
		"image_width": "401",
		"iris_center_x": "200",
		"iris_center_y": "139"
	},
	"engine": "BQAT-core 1.2.0 beta",
	"modality": "iris",
	"id": "iris_Left_1682599612619",
	"timestamp": "2023-04-27 12:46:52.802822"
}

Wrapper Implementaion Details

The wrapper works as per MOSIP's specification for quality check. The wrapper received request for quality check for a single Biometric Image Record (BIR) and calls the BAQT stateless API to perform quality check and retruns the result as per the specification.