CodeSquad PS1
Solution for Problem Statement 1 for AIDL 2020 conducted by @unifynd technologies.
Problem
Given images of bills/invoices, the task was to perform the following 3 operations:
- Edge detection, cropping, flattening, enhancement of cropped image and compression.
- Extracting text from the processed image.
- The confidence score for the image to text conversion.
Development
-
Make sure you have
react-native cli& the latest Android SDK installed on your system. To get started with React Native, follow here -
To install OpenCV for Android, see here
-
Clone the github repository and install the dependencies using
npm
$ git clone https://github.com/burhanuday/codesquad-PS1
$ cd codesquad-PS1
$ npm install
-
Move the modified versions of the libraries from the
modified_open_source_libsto thenode_modulesfolder. Replace in destination when asked -
Run development build (Android SDK and adb tools are required to be installed)
$ npx react-native run-android --no-jetifier
$ npx react-native run-ios
- Run the
flaskserver from theflask-serverfolder
$ python app.py
For Mac
-
Follow the instructions mentioned on Getting Started on React Native documentation
-
Download the project zip from here
-
Edit the
sdk.dirstatement with the SDK path in the<extracted-folder>/android/local.propertiesfile, for your machine. -
If getting this error
Could not compile settings file 'android\settings.gradle. First run/usr/libexec/java_home -Vwhich will output something like the following:
Matching Java Virtual Machines (2):
13.0.1, x86_64: "Java SE 13.0.1" /Library/Java/JavaVirtualMachines/jdk-13.0.1.jdk/Contents/Home
1.8.0_242, x86_64: "AdoptOpenJDK 8" /Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
/Library/Java/JavaVirtualMachines/jdk-13.0.1.jdk/Contents/Home
Pick the version you want to be the default (1.8.0_242 the version of AdoptOpenJDK 8) then:
export JAVA_HOME=`/usr/libexec/java_home -v 1.8.0_242`
- Run the app with
npx react-native run-android --no-jetifier
Screens
Build
- Create and then copy a keystore file to android/app
$ keytool -genkey -v -keystore mykeystore.keystore -alias mykeyalias -keyalg RSA -keysize 2048 -validity 10000
- Setup your gradle variables in android/gradle.properties
MYAPP_RELEASE_STORE_FILE=mykeystore.keystore
MYAPP_RELEASE_KEY_ALIAS=mykeyalias
MYAPP_RELEASE_STORE_PASSWORD=*****
MYAPP_RELEASE_KEY_PASSWORD=*****
- Add signing config to android/app/build.gradle
android {
signingConfigs {
release {
storeFile file(MYAPP_RELEASE_STORE_FILE)
storePassword MYAPP_RELEASE_STORE_PASSWORD
keyAlias MYAPP_RELEASE_KEY_ALIAS
keyPassword MYAPP_RELEASE_KEY_PASSWORD
}
}
buildTypes {
release {
signingConfig signingConfigs.release
}
}
}
- Setup your gradle variables in android/gradle.properties
cd android && ./gradlew assembleRelease
Your APK will get generated at: android/app/build/outputs/apk/app-release.apk
Credits
Special thanks to react-native-document-scanner & react-native-perspective-image-cropper
NOTE: We are using heavily modified versions of both these libraries to support our usecase. You can find these modified libraries in the modified_open_source_libs/
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