private void ChooseImageTask_Completed(object sender, PhotoResult e)
{
if (e.TaskResult == TaskResult.OK)
{
GenerateButton.IsEnabled = true;
SketchButton.IsEnabled = false;
InstructionText.Visibility = Visibility.Collapsed;
DisplayedImage.Visibility = Visibility.Visible;
selectedImage = PictureDecoder.DecodeJpeg(e.ChosenPhoto);
DisplayedImage.Source = selectedImage.Copy();
}
}
private Task<WriteableBitmap> GenerateLineDrawing(WriteableBitmap sourceImage, int thresholdOffset)
{
var resultImage = sourceImage.Copy();
return Task.Run<WriteableBitmap>(() =>
{
var colorMatrix = resultImage.ToColorMatrix().Desaturate();
downSampler.ThresholdOffset = thresholdOffset;
colorMatrix = downSampler.Execute(colorMatrix);
colorMatrix = noiseReducer.Execute(colorMatrix);
resultImage.WriteColors(colorMatrix);
return resultImage;
});
}