Overview

HUAWEI HiAI is an open artificial intelligence (AI) capability platform for smart devices, which adopts a "chip-device-cloud" architecture, opening up chip, app, and service capabilities for a fully intelligent ecosystem. This assists you in delivering an optimal smart app experience for users, by fully leveraging Huawei's powerful AI processing capabilities.

In order to open up app capabilities, HUAWEI HiAI Engine provides a wide range of AI capabilities that can be integrated into apps. Document skew correction and general text recognition are two of the AI capabilities.

• The document skew correction AI capability can identify document positions and adjust document angles in an image.
• The general text recognition AI capability can extract text in the image.

For more information, please visit our official website:
https://developer.huawei.com/consumer/en/hiai#Engine

What You Will Create

In this codelab, you can use this AI capability to create an Android app that can identify document positions and adjust document angles and extract text information from images.
For example:

What You Will Learn

In this codelab, you will learn how to:

• Use Android Studio for efficient Android app development
• Use the document skew correction API of HUAWEI HiAI Engine
• Use the general text recognition API of HUAWEI HiAI Engine

What You Will Need

Hardware Requirements

• A development computer (desktop or laptop)
• A Huawei mobile phone equipped with the Kirin 970 or a later chipset and running EMUI 8.1.0 or later

Software Requirements

• Java JDK installation package
• Android Studio 3.5.2 or later
• Android SDK package
• HiAI SDK package

Step 1: Install the plugin

Go to File > Settings > Plugins > Marketplace.
Enter "HMS Toolkit" to search for the plugin and install it.

Step 2: Restart Android Studio

Click "Restart".

Step 1: Import the project

Download the project via the link below:

Download

Step 2: Open the Coding Assistant

Go to HMS > Coding Assistant, and sign in to the HUAWEI ID.

Step 3: Go to AI > HUAWEI HiAI Engine

Document Detection and Correction

Step 1: Open DocSkewCorrectionActivity

Find the handleDocDetect(Bitmap bitmap){} method for document detection and the handleDocRefine(Bitmap bitmap,DocCoordinates docCoordinates){} method for document correction.

Step 2: Click Document Correction/Detection

Step 3: View the Code Sample

Document Extraction

Step 1: Open TextRecognitionActivity

Find the handleTextRecognition(){} method for document extraction.

Step 2: Click General Text Recognition

Step 3: View the Code Sample

After project syncing, select a device as the deployment target, and click the Run icon to install and start sample app, as shown in the following figure.