TFGraph graph = new TFGraph();
        graph.Import(File.ReadAllBytes(Application.dataPath + "/frozen_model.pb"));

        TFTensor input = ImageUtil.CreateTensorFromImageFile("C:/Users/Lopes/Desktop/longhand.jpg", TFDataType.Float);

        float[][][][] outfloats;

        using (TFSession sess = new TFSession(graph))
        {
            var runner = sess.GetRunner();
            runner.AddInput(graph[input_tensorname][0], input);

            runner.Fetch(graph[output_tensorname][0]);
            var output = runner.Run();
            outfloats = (float[][][][])output[0].GetValue();
        }