private async void TakePhoto_Click(object sender, EventArgs e)
{
try
{
_camera.StopPreview();
var imageBitmap = _textureView.Bitmap;
analyseButton.Visibility = ViewStates.Visible;
retakeButton.Visibility = ViewStates.Visible;
takePhoto.Visibility = ViewStates.Invisible;
using (var imageStream = new MemoryStream())
{
var preparedBitmap = ImagePreparer.PrepareForRecognition(imageBitmap);
preparedBitmap = SBSDK.ApplyImageFilter(preparedBitmap, ScanbotSDK.Xamarin.ImageFilter.Binarized);
await preparedBitmap.CompressAsync(Bitmap.CompressFormat.Jpeg, 100, imageStream);
img = preparedBitmap.Copy(preparedBitmap.GetConfig(), true);
imageBitmap.Recycle();
//resizedBitmap.Recycle();
preparedBitmap.Recycle();
};
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine("*************************\n" + ex.Message);
}
}
protected void ApplyFilterOnDocumentImage(ImageFilter filter)
{
DebugLog("Applying image filter on " + documentImageUrl);
Task.Run(() =>
{
// The SDK call is sync!
var resultImage = SBSDK.ApplyImageFilter(documentImageUrl, filter);
DebugLog("Image filter result: " + resultImage);
ShowImageView(resultImage);
});
}
void ApplyImageFilter(ImageFilter filter)
{
DebugLog("Applying image filter " + filter + " on image: " + documentImageUri);
try
{
Task.Run(() =>
{
// The SDK call is sync!
var resultImage = SBSDK.ApplyImageFilter(documentImageUri, filter);
documentImageUri = MainApplication.TempImageStorage.AddImage(resultImage);
ShowImageView(resultImage);
});
}
catch (Exception e)
{
ErrorLog("Error applying image filter", e);
}
}
/// <summary>
/// Make photo black and white thus removing noise and shadows
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public static Bitmap Binarize(Bitmap image)
{
return(SBSDK.ApplyImageFilter(image, ImageFilter.Binarized));
}