UnSupport Image Format issue in BusinessCard Process

Hello, 

I'm working on you BusinessCardProcess API. It's Very nice API and quick Response.

I use this API in CURL request and pass the imageSource and exportFormat but every time response is given 551 (Unsupported image file format). 

I was tried to pass the image as an image file data format and JSON format place both the code in below.

Image File Data:

$business_card_front_image_pic = $request->file('business_card_front_image_pic');

$appName = env('ABBYY_APP_NAME');

$appPassword = env('ABBYY_PASSWORD');

$apiUrl = 'https://cloud.ocrsdk.com/processBusinessCard';

$requestBody = array();

$requestBody['imageSource'] = $business_card_front_image_pic;

$requestBody['exportFormat'] = 'xml';

$connection = curl_init();

curl_setopt($connection, CURLOPT_URL, $apiUrl);

curl_setopt($connection, CURLOPT_RETURNTRANSFER, true);

curl_setopt($connection, CURLOPT_USERPWD, "$appName:$appPassword");

curl_setopt($connection, CURLOPT_POST, true);

curl_setopt($connection, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);

curl_setopt($connection, CURLOPT_HTTPHEADER, array('Content-Type: image/jpeg'));

curl_setopt($connection, CURLOPT_POSTFIELDS, json_encode($requestBody));

$result = curl_exec($connection);

 

Image JSON pass in request:

$business_card_front_image_pic = $request->file('business_card_front_image_pic');

$front = base64_encode(file_get_contents($business_card_front_image_pic));

$appName = env('ABBYY_APP_NAME');

$appPassword = env('ABBYY_PASSWORD');

$apiUrl = 'https://cloud.ocrsdk.com/processBusinessCard';

$requestBody = array();

$requestBody['imageSource'] = $front;

$requestBody['exportFormat'] = 'xml';

$connection = curl_init();

curl_setopt($connection, CURLOPT_URL, $apiUrl);

curl_setopt($connection, CURLOPT_RETURNTRANSFER, true);

curl_setopt($connection, CURLOPT_USERPWD, "$appName:$appPassword");

curl_setopt($connection, CURLOPT_POST, true);

curl_setopt($connection, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);

curl_setopt($connection, CURLOPT_HTTPHEADER, array('Content-Type: image/jpeg'));

curl_setopt($connection, CURLOPT_POSTFIELDS, json_encode($requestBody));

$result = curl_exec($connection);