How to use face recognition Rest API?

Question

I am using Face API with curl in PHP. But I am having issue when matching images.
I am able to generate faceId's but when matching I get different results than expected. I have two images belonges to same person but API indicates that these images are different. But when using Microsoft demo to compare images I get right result.

Here is the code as well.

function compare($image1, $image2)
{
$faceid = array();
$images = array($image1 , $image2);

$headers = ["Ocp-Apim-Subscription-Key:*******************","Content-Type:application/json" ];
/* Getting faceId /
foreach($images as $data)
{
/ First step is to detect face */
$request_url='https://nexever.cognitiveservices.azure.com/face/v1.0/detect?detectionModel=detection_02&returnFaceId=true&returnFaceLandmarks=false';

    /* Image to get faceid */

    $detect = array('url' => $data);

$curl = curl_init(); curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($curl, CURLOPT_URL, $request_url); curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($detect)); curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);      
$strResponse = curl_exec($curl);
$curlErrno   = curl_errno($curl);
if ($curlErrno) { $curlError = curl_error($curl);throw new Exception($curlError); }
$http_status = curl_getinfo($curl, CURLINFO_HTTP_CODE); curl_close($curl);
$strResponse = json_decode($strResponse , true);
array_push($faceid , $strResponse[0]['faceId']);        
}       

// comparing by face ID
/* Match face url */
$request_url = 'https://nexever.cognitiveservices.azure.com/face/v1.0/verify';

/* Face ID to compare */
$match = array("faceId1"=>$faceid[0], "faceId2"=>$faceid[1],"maxNumOfCandidatesReturned" =>10,"mode"=> "matchFace");

$curl = curl_init(); curl_setopt($curl, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($curl, CURLOPT_URL, $request_url);   curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_POSTFIELDS, json_encode($match)); curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
$strResponse = curl_exec($curl);  $curlErrno   = curl_errno($curl);
if ($curlErrno) {$curlError = curl_error($curl); throw new Exception($curlError); }
$http_status = curl_getinfo($curl, CURLINFO_HTTP_CODE);
curl_close($curl);
return json_decode($strResponse, true);

}

$img1 = "**********";
$img2 = "*********";
$ret = compare($img1, $img2);

print_r($ret);
if(isset($ret['isIdentical']))
{
if($ret['isIdentical'] == 1)
{
echo "Same Person ";
}
else if($ret['isIdentical'] == 0)
{
echo "Different Person ";
}
}

I have replaced my secret key and image path with ***.

I am using PHP language and kindly give me solution in PHP only.

Answer 1

There ought to be something wrong along these lines as you're not feeding the first parameter in the images to the API...

$img1 = "";
$img2 = "***";
$ret = compare($img1, $img2);

Answer 2

I have solved this myself. I was not missing recognition model in my request. Adding recognition model works for me.