How to Extract Text from image using Laravel and Amazon Rekognition API
I’m currently working on a project that requires extracting text from images of variable quality. I’m doing quick prototypes using PHP and Laravel, but I’ve found the documentation for accomplishing this a bit lacking. After working on it for a bit, I figured out a really simple solution and am sharing in case it helps anyone else.
This sample will send the image to the API as a blob instead of using a URL. I had tried Base64 encoding it without any luck. I discovered that using Imagick was the easiest way to make this work so the sample relies on that.
Fire up terminal and add a requirement for aws/aws-sdk-php:
composer require aws/aws-sdk-php
Add keys for your AWS access keys and region to your .ENV file:
AWS_REGION=YOUR_REGION
AWS_SECRET_ACCESS_KEY=ENTER_YOUR_KEY
AWS_ACCESS_KEY_ID=ENTER_YOUR_KEY
Create a controller, add the snippet below, and create a route to the controller. Check the URL and you should have a dump showing the array returned from AWS with all the text, bounding boxes, and information.
//Build config array for AWS variables
$config = array(
'region' => env('AWS_REGION'),
'version' => 'latest',
'credentials' => array(
'key' => env('AWS_KEY'),
'secret' => env('AWS_SECRET')
)
);
//Replace with path to image or uploaded image.
$path = '{path to image.jpg}';
$image = new Imagick($path);
$imdata = $image->getImageBlob();
$client = new RekognitionClient($config);
$result = $client->detectText([
'Image' => ['Bytes' => $imdata],
]);
//Dump Result
dd($result);