It doesn't work in an Android environment.

[BonghoCha]

It doesn't work in an Android environment.

A null value is found in the ProcessImage() function within EmotionDetectionAsset.cs.

Is it not working in your mobile environment?

[wvdvegt]

The component does not work in a mobile (e.g. Android/iOS) environment.

Currently it is limited to Windows only because it uses DLib wrapped using a dll for detecting faces and calculating landmarks.

[BonghoCha]

The same error is seen in Windows. The environment is Windows10 x64. I built exe and there is an error. Is this also a dll problem?

[wvdvegt]

The component is quite sensitive to file locations and setup.

Does the EmotionDetectionAsset_Demo desktop app run correctly?

In Unity3D you need to add both dlibwrapper_x86.dll and dlibwrapper_x64.dll to the asset folder. Furthermore the 'FURIA Fuzzy Logic Rules.txt' and 'shape_predictor_68_face_landmarks.dat' files needs to be present there too.

Paths to these folders should include the Assets folder alike:

const String furia = @"Assets\FURIA Fuzzy Logic Rules.txt";
const String database = @"Assets\shape_predictor_68_face_landmarks.dat";

Finally ProcessImage() should have a true as last parameter to flip images vertically.
Frames obtained from a webcam with webcam.GetPixels32(data); where data is a Color32[] should be process by Color32ArrayToByteArray() into a byte[]

private static byte[] Color32ArrayToByteArray(UnityEngine.Color32[] colors)
    {
        if (colors == null || colors.Length == 0)
            return null;

        int lengthOfColor32 = Marshal.SizeOf(typeof(UnityEngine.Color32));
        int length = lengthOfColor32 * colors.Length;
        byte[] bytes = new byte[length];

        GCHandle handle = default(GCHandle);
        try
        {
            handle = GCHandle.Alloc(colors, GCHandleType.Pinned);
            IntPtr ptr = handle.AddrOfPinnedObject();
            Marshal.Copy(ptr, bytes, 0, length);
        }
        finally
        {
            if (handle != default(GCHandle))
                handle.Free();
        }

        return bytes;
    }

[BonghoCha]

We figured out when the problem was going to us. It works normally when "build and running", but a null error occurs when I press the generated exe file and run the program. The file you mentioned exists in the asset, so why does an error occur when I build it?

I'm sorry that I don't speak English well.

https://www.youtube.com/watch?v=1sIJVrmI94Y

[BonghoCha]

The problem is solved! It was a problem with the path of the .exe file.