protected override async Task EvaluateAsync(MLModelResult result, VideoFrame inputFrame)
{
// Initialize the input
BirdModelInput input = new BirdModelInput()
{
data = inputFrame
};
// Evaluate the input
BirdModelOutput output = await EvaluateAsync(input, result.CorrelationId);
// Get first label from output
string label = output.classLabel?.FirstOrDefault();
// Find probability for label
if (string.IsNullOrEmpty(label) == false)
{
float probability = output.loss?.ContainsKey(label) == true ? output.loss[label] : 0f;
result.OutputFeatures = new MLModelOutputFeature[]
{
new MLModelOutputFeature()
{
Label = label, Probability = probability
}
};
}
}
public async Task <BirdModelOutput> EvaluateAsync(BirdModelInput input, string correlationId = "")
{
BirdModelOutput output = new BirdModelOutput();
// Bind input and output model
LearningModelBindingPreview binding = new LearningModelBindingPreview(this.LearningModel);
binding.Bind("data", input.data);
binding.Bind("classLabel", output.classLabel);
binding.Bind("loss", output.loss);
// Evaluate the bindings
LearningModelEvaluationResultPreview evalResult = await this.LearningModel.EvaluateAsync(binding, correlationId);
return(output);
}