private async Task EvaluateVideoFrameAsync(VideoFrame inputFrame)
{
if (inputFrame != null)
{
try
{
// Get ONNX file
var modelFile = await StorageFile.GetFileFromApplicationUriAsync(new Uri($"ms-appx:///Assets/CustomVision.onnx"));
// Create WinML Model
var model = await CustomVisionModel.CreateOnnxModel(modelFile);
// Set image(VideoFrame)
var input = new CustomVisionInput
{
data = inputFrame
};
// Detect image
var output = await model.EvaluateAsync(input);
ResultText.Text = output.classLabel.GetAsVectorView()[0];
ResultText.Visibility = Visibility.Visible;
}
catch (Exception ex)
{
}
}
}
public static async Task <CustomVisionModel> CreateFromStreamAsync(IRandomAccessStreamReference stream)
{
CustomVisionModel learningModel = new CustomVisionModel();
learningModel.model = await LearningModel.LoadFromStreamAsync(stream);
learningModel.session = new LearningModelSession(learningModel.model);
learningModel.binding = new LearningModelBinding(learningModel.session);
return(learningModel);
}
public static async Task <CustomVisionModel> CreateOnnxModel(StorageFile file)
{
CustomVisionModel learningModel = new CustomVisionModel();
learningModel.model = await LearningModel.LoadFromStorageFileAsync(file);
learningModel.session = new LearningModelSession(learningModel.model);
learningModel.binding = new LearningModelBinding(learningModel.session);
return(learningModel);
}