HomeGuidesAPI Reference
Guides

Quality Check Verification🔁

Our engine assesses factors like resolution, sharpness, color accuracy, and overall visual fidelity to ensure satisfactory image presentation or analysis and help you meet ICAO standards.

Suggest Edits

Overview

The Image Quality Assessment API employs advanced algorithms and machine learning models to deliver accurate and objective assessments of image quality. With this powerful tool, you can easily check the overall quality of an image and identify any issues that may affect its usability. This helps you to ensure that your images meet the highest standards and are suitable for a wide range of applications.

🚧

Important!

Before you proceed, ensure you review the prerequisites for integrating to our APIs for a more detailed guide.

API Endpoint

https://api.verified.africa/sfx-v4-verify/v4/id-service

Headers

Our service accepts headers for authentication. See below the headers to pass to the API

HeaderTypeDescription
useridStringThis is your user id retrieved from the portal. Check the getting started article to understand how to retrieve your user ID
apiKeyStringThis is your api key retrieved from the portal. Check the getting started article to understand how to retrieve your apiKey

Request Parameters

ParameterRequiredDescriptionTypeTest Data
verificationTypeYesThis field is used to identify the service being called. Ensure to use the value provided exactly as providedStringQUALITY-CHECK-VERIFICATION
SelfieYesThe source imageStringBase64 image
qualityCheckYesThe quality image configurations are set.JSON{"min": 0.5, "name": "hat_detector"},
{"min": 0.5, "name": "blur_detector"},
{"min": 0.5, "name": "glasses_detector"},
{"min": 0.1, "max": 2.2, "name": "face_shadow"},
{"min": 0.05, "max": 0.2, "name": "face_sharpness"},
{"min": 0.4, "max": 0.8, "name": "face_brightness"},
{"min": 40.0, "max": 80.0, "name": "shoulder_score"},
{"min": 1.5, "max": 2.2, "name": "image_height_to_face"},
{"yaw": 10.0, "roll": 10.0, "pitch": 10.0, "name": "estiamte_pose"},
{"min": 0.0, "max": 0.1, "name": "shadow_score"},
{"flag": "ON", "name": "head_in_frame"},
{"flag": "ON", "name": "background_clutter"},
{"min": 0.5, "name": "mask_detector"},
{"min": 0.65, "max": 1.3, "name": "face_align"},
{"height": 350, "width": 350, "name": "image_dimension"}
{
    "verificationType": "QUALITY-CHECK-VERIFICATION",
    "selfie": "data:image/jpeg;base64,/9j/4AAQSkZJRgABAQAAAQABAAD/",
    "qualityCheck": [
    {"min": 0.5, "name": "hat_detector"},
    {"min": 0.5, "name": "blur_detector"},
    {"min": 0.5, "name": "glasses_detector"},
    {"min": 0.1, "max": 2.2, "name": "face_shadow"},
    {"min": 0.05, "max": 0.2, "name": "face_sharpness"},
    {"min": 0.4, "max": 0.8, "name": "face_brightness"},
    {"min": 40.0, "max": 80.0, "name": "shoulder_score"},
    {"min": 1.5, "max": 2.2, "name": "image_height_to_face"},
    {"yaw": 10.0, "roll": 10.0, "pitch": 10.0, "name": "estiamte_pose"},
    {"min": 0.0, "max": 0.1, "name": "shadow_score"},
    {"flag": "ON", "name": "head_in_frame"},
    {"flag": "ON", "name": "background_clutter"},
    {"min": 0.5, "name": "mask_detector"},
    {"min": 0.65, "max": 1.3, "name": "face_align"},
    {"height": 350, "width": 350, "name": "image_dimension"}
    ]
}

Response Parameters

ParameterTypeDescription
responseCodeStringPlease reference Response Codes page for details on all possible responses
descriptionStringThis is a description of the response received.
verificationTypeStringThe same verificationType passed in request will be returned here
verificationStatusStringThis field lets you know if the identity verification was successful. Options are:

VERIFIED: This means that the image passed the quality check.
NOT VERIFIED This means that the image did not pass the quality check.
PENDING This status means that the verification could not be completed. Refer to the responseCode for the specific failure reason
transactionStatusStringThis indicates the wallet debit status. The options are successful or failed.
transactionReferenceStringIf you supplied a transactionReference, the same will be returned here. Else, we would generate a reference and return that to you in this field.
transactionDateStringDate the transaction was done
responseJsonnull
{
    "responseCode": "00",
    "description": "Success",
    "verificationType": "QUALITY-CHECK-VERIFICATION",
    "verificationStatus": "VERIFIED",
    "transactionStatus": "SUCCESSFUL",
    "transactionReference": "1630321373727-S7YEIV7J-1713262779496-950ef218-faa3-4bb7-85f0-f2450ef057d5",
    "transactionDate": "1713262787050",
    "searchParameter": null,
    "callBackUrl": null,
    "livenessScore": 0.0,
    "paymentRef": null,
    "response": [
        {
            "name": "hatDetection",
            "score": 0.003585,
            "status": "Pass",
            "reason": "Score is lower than the threshold"
        },
        {
            "name": "blurDetection",
            "score": 5.4E-5,
            "status": "Pass",
            "reason": "Score is lower than the threshold"
        },
        {
            "name": "glassesDetection",
            "score": 0.159076,
            "status": "Pass",
            "reason": "Score is lower than the threshold"
        },
        {
            "name": "faceShadowDetection",
            "score": 0.216433,
            "status": "Pass",
            "reason": "Score is within the stipulated thresholds"
        },
        {
            "name": "faceSharpnessDetection",
            "score": 0.044421,
            "status": "Fail",
            "reason": "Score is lower than the min threshold"
        },
        {
            "name": "faceBrightnessDetection",
            "score": 0.505151,
            "status": "Pass",
            "reason": "Score is within the stipulated thresholds"
        },
        {
            "name": "shoulderScore",
            "score": 105.0,
            "status": "Fail",
            "reason": "Score is higher than the max threshold"
        },
        {
            "name": "imageHeighttoFace",
            "score": 1.259259,
            "status": "Fail",
            "reason": "Score is lower than the min threshold"
        },
        {
            "name": "estimatePose",
            "status": "Fail",
            "reason": "Yaw value is higher than the yaw threshold",
            "estimatePoseScore": {
                "yaw": 5.254457,
                "roll": 4.28412,
                "pitch": 10.195716
            }
        },
        {
            "name": "shadowScore",
            "score": 0.158477,
            "status": "Fail",
            "reason": "Score is higher than the max threshold"
        },
        {
            "name": "headInFrame",
            "score": "FALSE",
            "status": "Fail",
            "reason": "Head is not within the frame"
        },
        {
            "name": "backgroundClutter",
            "score": "BLUE",
            "status": "Pass",
            "reason": "Plain Background"
        },
        {
            "name": "maskDetection",
            "score": 0.231767,
            "status": "Pass",
            "reason": "Score is lower than the threshold"
        },
        {
            "name": "faceAlign",
            "score": 0.488889,
            "status": "Fail",
            "reason": "Score is lower than the min threshold"
        },
        {
            "name": "imageDimension",
            "score": "width: 816 Height: 612",
            "status": "Fail",
            "reason": "Height and width are not same as threshold"
        }
    ],
    "faceMatch": null,
    "licenseSessionId": null,
    "remainingLicenseSessionRound": null
}

Error Responses

Status CodeDescription
400Bad Request - Invalid input parameters
401Unauthorized - Invalid API Key
500Internal Server Error - Something went wrong on the server side

Updated 2 months ago

What’s Next