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Android OCR SDK: Extract Data from VehicleCards, BankCards, and NationalIDs

Description:

Easily integrate optical character recognition (OCR) capabilities into your Android applications with this powerful SDK. It seamlessly recognizes text from images of VehicleCards, BankCards, and NationalIDs, returning structured data for efficient processing.

Features:

Supported Card Types
VehicleCards
BankCards
NationalCard

More:

  • Base64 Image Input: Capture images and send them in Base64 format for analysis.
  • API Endpoint Communication: Establish communication with your designated OCR backend through - endpoints.
  • Customization: Override predefined colors and styles for personalized branding.
  • Kotlin Language: Developed using Kotlin for modern Android development.
  • Open-Source: Available on GitHub for contributions and customization. Installation:

Important

Add the Jitpack repository to your project's settings.gradle file:

Gradle

repositories {
    maven { url 'https://jitpack.io' }
}

Important

Add the dependency to your app's build.gradle file:

Gradle

dependencies {
    implementation 'com.github.AyanTech:OCR-SDK:latest-version'
}

Initialization:

Set up the SDK configuration in your application class or main activity: Kotlin

val config = OCRConfig.builder()
    .setContext(this)
    .setBaseUrl("replace_with_actual_base_url")
    .setToken("replace_with_actual_token")
    .setUploadImageEndPoint("replace_with_actualt_endpoint")
    .setGetResultEndPoint("replace_with_actual_endpoint")
    .build()

Integration:

Create ocrLuncher:

var ocrLuncher =
registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
if (result.resultCode == Activity.RESULT_OK) {
val data: ArrayList<GetCardOcrResult.Result>? =
result.data?.extras?.getParcelableArrayList("GetCardOcrResult")
val extraInfo =  result.data?.getStringExtra("extraInfo")

            
                        if (data != null) {
                        
                           val chassisNumber =
                                data.find { it.Key == "ChassisNumber" }?.Value.toString()
                                
                            //get other data like example above
                        }
                    )
             }
        }

Start the OcrActivity and pass required parameters: Kotlin

  val intent = Intent(this, OcrActivity::class.java)
        intent.putExtra("cardType", "VehicleCard") // or "BankCard" or "NationalID"
        intent.putExtra("className", "com.khodropay.dokan.MainActivity")
        intent.putExtra("singlePhoto", false) // true takes a single image
        intent.putExtra("extraInfo", mobileNumber) // optional
        ocrLuncher.launch(intent)

Get Result

Receive desire result form intent in activity like below Example:

Keys Explenaition
GetCardOcrResult Array list containing results from the OCR API
cardType String representing the exact card type sent during integration
extraInfo String containing additional information sent during integration

Kotlin

  val extras = intent.extras
        val data = extras?.getParcelableArrayList<GetCardOcrResult.Result>("GetCardOcrResult")
        val cardType = intent.getStringExtra("cardType")
        val extraInfo = intent?.getStringExtra("extraInfo")

Customization:

Override desired colors and styles in your app's theme (styles.xml): XML Example:

Tip

Colors in colors.xml

     <color name="ocr_ic_close_tint">#FFFFFFFF</color>
    <color name="ocr_dialog_color_background">#F2F2F2</color>
    <color name="ocr_stroke_button_blue">#2B48EC</color>
    <color name="ocr_button_blue">#2B48EC</color>
    <color name="default_divider">@color/ocr_dialog_color_background</color>
    <color name="ocr_text_button">#ffffff</color>
    <color name="ocr_camera_fill_color">#2B48EC</color>
    <color name="ocr_gray_7">#D8D8D8</color>
    <color name="ocr_white">#FFFFFF</color>
    <color name="ocr_fragment_background">@color/gray_4</color>
    <color name="ocr_dash_color">#2BCEFF</color>

Tip

Styles in textStyles.xml

 <style name="ocr_txt_regular_13px_white" parent="txt_regular">
        <item name="android:textColor">@color/ocr_ic_close_tint</item>
    </style>
    
    <style name="ocr_txt_regular_14px_gray2" parent="txt_regular">
        <item name="android:textColor">@color/gray_2</item>
    </style>

Tip

Styles in styles.xml

       <style name="ocr_button" parent="@android:style/Widget.Button">
        <item name="android:gravity">center</item>
        <item name="android:paddingStart">@dimen/margin_16</item>
        <item name="android:paddingEnd">@dimen/margin_16</item>
        <item name="android:clipToPadding">false</item>
        <item name="android:height">@dimen/ocr_button_height</item>
        <item name="android:background">@drawable/ocr_back_blue_button</item>
        <item name="android:foreground">?android:attr/selectableItemBackground</item>
        <item name="fontFamily">@font/regular</item>
        <item name="android:fontFamily">@font/regular</item>
        <item name="android:textSize">@dimen/txt_regular</item>
        <item name="android:textColor">@color/ocr_white</item>
    </style>

    <style name="ocr_stroked_button" parent="@android:style/Widget.Button">
        <item name="android:gravity">center</item>
        <item name="android:paddingStart">@dimen/margin_16</item>
        <item name="android:paddingEnd">@dimen/margin_16</item>
        <item name="android:clipToPadding">false</item>
        <item name="android:height">@dimen/ocr_button_height</item>
        <item name="android:background">@drawable/ocr_back_white_bordered_blue_button</item>
        <item name="android:foreground">?android:attr/selectableItemBackground</item>
        <item name="fontFamily">@font/regular</item>
        <item name="android:fontFamily">@font/regular</item>
        <item name="android:textSize">14sp</item>
        <item name="android:textColor">@color/ocr_stroke_button_blue</item>
    </style>

Tip

Json file in raw directory

ocr_loading.json

Example Usage:

Refer to the example module in the source code for a complete implementation showcase.

License:

Authored by @Pedram.Fahimi [email protected]