In this blog post, i will be able to allow you to skills to read content of images with Google Vision API.
Google Vision API can easily detect and extract text from a picture . There are two annotation features (TEXT_DETECTION, DOCUMENT_TEXT_DETECTION) that perform Optical Character Recognition and return the extracted text, if any.
In order to use Google Vision API, you'll need to create new project or select an existing project and enable the Vision API.
<!DOCTYPE html>
<html>
<head>
<title>How to read or detect text from image using Google Vision API </title>
</head>
<body>
<form enctype="multipart/form-data" action="" method="POST">
Choose an image to upload: <input name="image" type="file" /><br />
<input type="submit" value="Upload Document" />
</form>
<?php
$url = "https://vision.googleapis.com/v1/images:annotate?key={api_key}";
$detection_type = "TEXT_DETECTION";
$image_validation = array('image/jpeg','image/png','image/gif');
if($_FILES){
// validate uploaded file for allowed mime type
if(in_array($_FILES['image']['type'],$image_validation)){
// base64 encode image
$image = file_get_contents($_FILES['image']['tmp_name']);
$image_base64 = base64_encode($image);
$json_request ='{
"requests": [
{
"image": {
"content":"' . $image_base64. '"
},
"features": [
{
"type": "' .$detection_type. '",
"maxResults": 200
}
]
}
]
}';
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_HTTPHEADER, array("Content-type: application/json"));
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $json_request);
$json_response = curl_exec($curl);
$status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
curl_close($curl);
// verify if we got a correct response
if ( $status != 200 ) {
die("Something when wrong. Status code: $status" );
}
// create an image identifier for the uploaded file
switch($_FILES['image']['type']){
case 'image/jpeg':
$im = imagecreatefromjpeg($_FILES['image']['tmp_name']);
break;
case 'image/png':
$im = imagecreatefrompng($_FILES['image']['tmp_name']);
break;
case 'image/gif':
$im = imagecreatefromgif($_FILES['image']['tmp_name']);
break;
}
// transform the json response to an associative array
$response = json_decode($json_response, true);
// display the first text annotation
echo'<pre>';
print_r($response['responses'][0]['textAnnotations'][0]['description']);
echo'</pre>';
}
else{
echo 'File type Invalied';
}
}
?>
</body>
</html>
In this example we are going to explain how to upload mulitple images using dropzone library in Codeigniter. Simple drag and drop image on the webpage. dropzone jQuery plugin, you can easily upload im
Read More
Website is like your asserts and nowadays everything is online world moved faster day by day with various of advance technology. Website is a basic need for your business, having a prof
Read More
Blazingcoders: Your Ideal WordPress Development Partner Our specialty at Blazingcoders is providing premium, tailored WordPress development services. Our team is capable of managing projects of any
Read More