microsoft cognitive face find similar return empty list

Question

Now I want to use the api Face to extract facial appearance with 'find similar'.Therefore, we are testing the ' open api testing ' on their homepage, but the result is an empty list against description which in their official document.Do you know how to solve this?

In their document the result like this:

    [
        {
            "persistedFaceId" : "015839fb-fbd9-4f79-ace9-7675fc2f1dd9",    
            "confidence" : 0.82
        },
    ...
    ]

but in testing console:

[]

I created face_list which named test and add two face in the face_list. And in Detect, I extracted persistedFaceId. I put the persistedFaceId in request body like this:

{    
    "faceId":persistedFaceId,
    "faceListId":test,  
}

Answer 1

In findsimilar utility one of the important parameter is mode.

i.e.

"faceId":"Your Detected face id",

"faceListId":"test"

"mode": "matchPerson"

mode defines which type of output you want. If mode is matchPerson then Find similar works to find perosn similarity.

If mode is matchFace then Find similar works to find faces similarity.

Hope you can understand that person similarity have more filters then faces similarity. And some times if not found similarity then it returns null.