google-cloud-vision-php

Overview

Performs Label detection, face detection, Logo detection, explicit content detection, landmark detection, optical character recogition and web detection on images. You can read more about Google cloud vision here https://cloud.google.com/vision/

Getting Started

You will need a google account to use this API so if you do not already have an account with google, head over there and create one

Installation

composer require wapnen/google-cloud-vision-php

Enable the API

To start using the google cloud vision api, follow the instructions here to enable the api for your google account https://cloud.google.com/vision/docs/before-you-begin

Authentication

You must set up an Api key to authenticate your requests. Follow the instructions here https://support.google.com/cloud/answer/6158862?hl=en to set up an API key for your project on google cloud platform console

Usage

<?php
include "vendor/autoload.php";
use GoogleCloudVision\GoogleCloudVision;
use GoogleCloudVision\Request\AnnotateImageRequest;
use GoogleCloudVision\Request\Request;


$annotateImageRequest1 = new AnnotateImageRequest();
$annotateImageRequest1->setImageUri("https://cdn.pixabay.com/photo/2016/02/19/11/25/supreme-court-building-1209701_960_720.jpg");
$annotateImageRequest1->setFeature('IMAGE_PROPERTIES');
$annotateImageRequest1->setFeature('LABEL_DETECTION');
$annotateImageRequest1->setFeature('WEB_DETECTION');

$gcvRequest = new GoogleCloudVision([$annotateImageRequest1], "Your_api_key");
$response = $gcvRequest->annotate();

echo json_encode($response);



 ?>

Note : You can create as many as 16 Annotate image requests to be sent with the request object

The function setImageUri(); takes a Google Cloud Storage image location, or publicly-accessible image URL. Alternatively you can use setImage(); which takes a base64 encoded image string.

You can set as many features as are available to the annotateImageRequest by calling the setFeature(); function on the annotateImageRequest which takes any of the following enum parameters ; TYPE_UNSPECIFIED, FACE_DETECTION, LANDMARK_DETECTION, LOGO_DETECTION, LABEL_DETECTION, TEXT_DETECTION, DOCUMENT_TEXT_DETECTION, SAFE_SEARCH_DETECTION, IMAGE_PROPERTIES, CROP_HINTS, WEB_DETECTION.

Optionally, you can set the image context for each annotateImageRequest object like so

$annotateImageRequest1 = new AnnotateImageRequest()
$annotateImageRequest1->setImageContext();
$annotateImageRequest1->getImageContext()->setCropHintsParams([1.333]); //array
$annotateImageRequest1->getImageContext()->setWebDetectionParams(false);  //boolean
$annotateImageRequest1->getImageContext()->setLanguageHints([]); //array

Finally, the GoogleCloudVision request object takes an array of AnnotateImageRequest objects as the first parameter and the api key as the second parameter

Response object

If successful, you will receive a json object response in the format below;

{
  "responses": [
    {
      object(AnnotateImageResponse)
    }
  ]
}