public async Task <mnistOutput> EvaluateAsync(mnistInput input)
{
binding.Bind("input_placeholer:0", input.input_placeholer00);
var result = await session.EvaluateAsync(binding, "0");
var output = new mnistOutput();
output.stage_30mid_conv70BiasAdd00 = result.Outputs["stage_3/mid_conv7/BiasAdd:0"] as TensorFloat;
return(output);
}
private async void TestBtn_Click(object sender, RoutedEventArgs e)
{
// Trigger file picker to select an image file
FileOpenPicker fileOpenPicker = new FileOpenPicker();
fileOpenPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
fileOpenPicker.FileTypeFilter.Add(".jpg");
fileOpenPicker.FileTypeFilter.Add(".png");
fileOpenPicker.ViewMode = PickerViewMode.Thumbnail;
StorageFile selectedStorageFile = await fileOpenPicker.PickSingleFileAsync();
SoftwareBitmap softwareBitmap;
using (IRandomAccessStream stream = await selectedStorageFile.OpenAsync(FileAccessMode.Read))
{
// Create the decoder from the stream
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(stream);
// Get the SoftwareBitmap representation of the file in BGRA8 format
softwareBitmap = await decoder.GetSoftwareBitmapAsync();
softwareBitmap = SoftwareBitmap.Convert(softwareBitmap, BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied);
}
// Display the image
//SoftwareBitmapSource imageSource = new SoftwareBitmapSource();
//await imageSource.SetBitmapAsync(softwareBitmap);
//UIPreviewImage.Source = imageSource;
// Encapsulate the image within a VideoFrame to be bound and evaluated
VideoFrame inputImage = VideoFrame.CreateWithSoftwareBitmap(softwareBitmap);
ModelInput.input_placeholer00 = ImageFeatureValue.CreateFromVideoFrame(inputImage);
//Evaluate the model
ModelOutput = await ModelGen.EvaluateAsync(ModelInput);
//Convert output to datatype
IReadOnlyList <float> vectorImage = ModelOutput.stage_30mid_conv70BiasAdd00.GetAsVectorView();
IList <float> imageList = vectorImage.ToList();
//LINQ query to check for highest probability digit
var maxIndex = imageList.IndexOf(imageList.Max());
//Display the results
Result.Text = maxIndex.ToString();
}
