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Scanning a check from an image file with the Android Check Scanner Module

In addition to extracting check data from a live camera stream, the SDK can scan checks from still images imported from the gallery or any other source.

Integration​

To see the complete integration and the Check Scanner in action, example apps are available:

Adding the feature as a dependency​

CheckScanner is included in Scanbot SDK package 4. Therefore, add the dependency io.scanbot:sdk-package-4 or higher in your build.gradle:

implementation("io.scanbot:sdk-package-4:$latestVersion")
implementation("io.scanbot:sdk-check-assets:$latestSdkVersion")
caution

Do not use multiple scanners (e.g., MRZ Scanner and Credit Card Scanner) at the same time.

Each scanner instance requires a lot of memory, GPU, and processor resources. Using multiple scanners will lead to performance issues for the entire application.

Initializing the SDK​

Before use, the Scanbot SDK needs to be initialized. The following code snippet should be added to your Application class:

import io.scanbot.sdk.ScanbotSDKInitializer

class ExampleApplication : Application() {

    override fun onCreate() {
        super.onCreate()

        // The Scanbot Scanner SDK initialization:
         ScanbotSDKInitializer()
           ...
         .initialize(this)
    }
}

Processing the image​

To select an image from the photo library and run detection on it, a class for an image import contract is created using the modern Android result API.

Import image Contract
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To run the gallery call and get a Bitmap using ImportImageContract, the following code is used:

Import image launcher
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Creating a scanner​

  val scanbotSDK = ScanbotSDK(this)
  val checkScanner = scanbotSDK.createCheckScanner()
caution

Each call to createCheckScanner() will create a new CheckScanner and initialize memory for it. If more than one import operation is expected, do not create new scanners for each operation.

Detection​

The Scanbot SDK is used to detect the desired element on the imported image.

Extracting check data from an image
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