protected override void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if (requestCode == PickImageID && resultCode == Result.Ok && data != null)
{
Android.Net.Uri uri = data.Data;
cameraSource.Stop();
surfaceView.Visibility = ViewStates.Gone;
selectedimage.Visibility = ViewStates.Visible;
mainLayout.Visibility = ViewStates.Gone;
captureLayout.Visibility = ViewStates.Visible;
selectedimage.SetImageURI(uri);
Bitmap currentImage = MediaStore.Images.Media.GetBitmap(this.ContentResolver, uri);
selectedimage.SetImageBitmap(currentImage);
Frame frame = new Frame.Builder().SetBitmap(currentImage).Build();
SparseArray items = textRecognizer.Detect(frame);
StringBuilder stringBuilder = new StringBuilder();
for (int i = 0; i < items.Size(); i++)
{
stringBuilder.Append(((TextBlock)items.ValueAt(i)).Value);
stringBuilder.Append(" ");
}
textView.Text = stringBuilder.ToString();
}
}
/// <summary>
/// <see cref="LabelReaderBase.GetFullTextFromImage(object)"/>
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
public override Task <string> GetFullTextFromImageAsync(object image)
{
byte[] imageBytes = (byte[])image;
TaskCompletionSource <string> taskCompletionSource = new TaskCompletionSource <string>();
StringBuilder stringBuilder = new StringBuilder();
using (Bitmap imageBitmap = BitmapFactory.DecodeByteArray(imageBytes, 0, imageBytes.Length))
using (global::Android.Gms.Vision.Frame frame = new global::Android.Gms.Vision.Frame.Builder().SetBitmap(imageBitmap).Build()) {
SparseArray textArray = TextRecognizer.Detect(frame);
List <string> valuesInOrder = OrderTextBlocks(textArray);
foreach (string value in valuesInOrder)
{
stringBuilder.Append(value);
}
taskCompletionSource.SetResult(stringBuilder.ToString());
}
return(taskCompletionSource.Task);
}
private async Task <string> GetTextFromImageAsync(Bitmap image)
{
var task = Task.Run(() =>
{
var frame = new Frame.Builder().SetBitmap(image).Build();
var items = textRecognizer.Detect(frame);
var ocrResultBuilder = new StringBuilder();
for (var i = 0; i < items.Size(); i++)
{
var item = (TextBlock)items.ValueAt(i);
ocrResultBuilder.Append(item.Value);
ocrResultBuilder.Append(" ");
}
var ocrResult = ocrResultBuilder.ToString();
return(ocrResult);
});
return(await task);
}
private void BtnGetTextOnClick(object sender, EventArgs e)
{
txtRecognizer = new TextRecognizer.Builder(ApplicationContext).Build();
if (!txtRecognizer.IsOperational)
{
txt_text.Text = "Error";
}
else
{
Frame fr = new Frame.Builder().SetBitmap(bitmap1).Build();
SparseArray items = txtRecognizer.Detect(fr);
StringBuilder stBuilder = new StringBuilder();
for (int i = 0; i < items.Size(); i++)
{
TextBlock item = (TextBlock)items.ValueAt(i);
stBuilder.Append(item.Value);
stBuilder.Append("\n");
}
txt_text.Text = stBuilder.ToString();
}
}
private void Ler(object sender, EventArgs e)
{
if (bitmap != null)
{
if (!textRecognizer.IsOperational)
{
}
else
{
Frame frame = new Frame.Builder().SetBitmap(bitmap).Build();
var items = textRecognizer.Detect(frame);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < items.Size(); i++)
{
var textBlock = items.ValueAt(i) as TextBlock;
sb.Append(textBlock.Value);
sb.Append("\n");
}
txt.Text = sb.ToString();
}
}
}
public Task <ScanResult> ProcessImage(Stream bitmapStream)
{
if (!_recognizer.IsOperational)
{
throw new Exception("Recognizer not operational.");
}
using var bitmap = BitmapFactory.DecodeStream(bitmapStream);
using var frame = new Frame.Builder().SetBitmap(bitmap).Build();
using var results = _recognizer.Detect(frame);
var result = new ScanResult();
for (var i = 0; i < results.Size(); i++)
{
var androidBlock = (TextBlock)results.ValueAt(i);
if (androidBlock != null)
{
result.Add(GetBlock(androidBlock));
}
}
return(Task.FromResult(result));
}
protected override void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
if (requestCode == PHOTO_REQUEST && resultCode == Result.Ok)
{
LaunchMediaScanIntent();
try
{
Bitmap bitmap = DecodeBitmapUri(ApplicationContext, imageUri);
if (detector.IsOperational && bitmap != null)
{
Frame frame = new Frame.Builder().SetBitmap(bitmap).Build();
SparseArray textBlocks = detector.Detect(frame);
System.String blocks = "";
System.String lines = "";
System.String words = "";
var regexMoney = new Regex(@"\$ ?([0-9]{1,3},([0-9]{3},)*[0-9]{3}|[0-9]+)(.[0-9][0-9])?$*");
for (int index = 0; index < textBlocks.Size(); index++)
{
//extract scanned text blocks here
TextBlock tBlock = (TextBlock)textBlocks.ValueAt(index);
blocks = blocks + tBlock.Value + " " + "\n";
var text = Regex.Replace(blocks.ToString(), "[A-Za-z ]", " ");
Match match = regexMoney.Match(text);
if (match.Success)
{
scanResults.Text = match.Value;
break;
}
else
{
scanResults.Text = "No Price.";
}
// foreach (IText line in tBlock.Components)
// {
// //extract scanned text lines here
// lines = lines + line.Value + "\n";
// foreach (IText element in line.Components)
// {
// //extract scanned text words here
// words = words + element.Value + ", ";
// }
// }
//}
//if (textBlocks.Size() == 0)
//{
// scanResults.Text = "Scan Failed: Found nothing to scan";
//}
//else
//{
// scanResults.Text = "Assim funcaaaaaaaaaaa";
// //scanResults.Text = scanResults.Text + "Blocks: " + "\n";
// //scanResults.Text = scanResults.Text + blocks + "\n";
// //scanResults.Text = scanResults.Text + "---------" + "\n";
// //scanResults.Text = scanResults.Text + "Lines: " + "\n";
// //scanResults.Text = scanResults.Text + lines + "\n";
// //scanResults.Text = scanResults.Text + "---------" + "\n";
// //scanResults.Text = scanResults.Text + "Words: " + "\n";
// //scanResults.Text = scanResults.Text + words + "\n";
// //scanResults.Text = scanResults.Text + "---------" + "\n";
//}
}
//else
//{
// scanResults.Text = "Could not set up the detector!";
//}
}
}
catch (System.Exception e)
{
Log.Error("OnActivityResult", e.StackTrace);
}
}
}
private void CropAndParse()
{
MainActivity.DetectedMotoModel = "";
MainActivity.DetectedPlate = "";
if (!txtRecognizer.IsOperational)
{
// Log.Error("Error", "Detector dependencies are not yet available");
}
else
{
var maxscore = MainActivity.PlateAndMotoStats.Scores.Max();
if (maxscore > MainActivity.SCORE_THRESHOLD)
{
var i0 = MainActivity.PlateAndMotoStats.Scores.ToList().IndexOf(maxscore);
var bboxes = MainActivity.PlateAndMotoStats.BoundingBoxes.ToList();
var ymin = bboxes[i0 * 4 + 0] * 300;
var xmin = bboxes[i0 * 4 + 1] * 300;
var ymax = bboxes[i0 * 4 + 2] * 300;
var xmax = bboxes[i0 * 4 + 3] * 300;
if (xmin < 0)
{
xmin = 0;
}
if (ymin < 0)
{
ymin = 0;
}
if (xmax > 300)
{
xmax = 300;
}
if (ymax > 300)
{
ymax = 300;
}
var w = xmax - xmin;
var h = ymax - ymin;
using (var builder = new Frame.Builder())
{
var cfg = Android.Graphics.Bitmap.Config.Argb8888;
using (var bmp = Android.Graphics.Bitmap.CreateBitmap(CopyColorsToArray(imgptr), 300, 300, cfg))
{
using (var bmpc = Android.Graphics.Bitmap.CreateBitmap(bmp, (int)xmin, (int)ymin, (int)(w), (int)(h)))
{
if (previewbmp != null)
{
previewbmp.Dispose();
previewbmp = null;
}
previewbmp = bmpc.ToSKBitmap().ToBitmap();
var frame = builder.SetBitmap(bmpc).Build();
var items = txtRecognizer.Detect(frame);
var strBuilder = new StringBuilder();
var plate = "";
for (int i = 0; i < items.Size(); i++)
{
var item = (TextBlock)items.ValueAt(i);
var str = item.Value.Replace('\n', ' ');
plate = str;
strBuilder.Append("i = " + i + ": " + str + "|");
if (i > 0)
{
break;
}
}
plate = ParsePlate(plate);
Console.WriteLine(plate);
if (CheckIsValidPlate(plate))
{
MainActivity.DetectedPlate = plate;
MainActivity.context.RunOnUiThread(() =>
{
var imgView = MainActivity.context.FindViewById <ImageView>(Resource.Id.imageViewPlatePreview);
imgView.SetImageBitmap(previewbmp);
var txtView = MainActivity.context.FindViewById <TextView>(Resource.Id.txtObjID);
txtView.Text = "Placa Detectada: " + plate + " (" + (maxscore * 100).ToString("N2") + "%)";
});
if (MainActivity.SavedDataStore.PlateNumbers.Contains(plate))
{
Xamarin.Essentials.Vibration.Vibrate(2000);
StartMedia("warning.mp3");
MainActivity.context.RunOnUiThread(() =>
{
var layout = MainActivity.context.FindViewById <LinearLayout>(Resource.Id.linearLayoutLabelPanel);
layout.SetBackgroundColor(Android.Graphics.Color.ParseColor("#89ff0000"));
var txtView = MainActivity.context.FindViewById <TextView>(Resource.Id.txtObjID);
txtView.SetTextColor(Android.Graphics.Color.Black);
var imgwarning = MainActivity.context.FindViewById <ImageButton>(Resource.Id.imageButtonWarning);
imgwarning.Visibility = Android.Views.ViewStates.Visible;
});
}
else
{
MainActivity.context.RunOnUiThread(() =>
{
var layout = MainActivity.context.FindViewById <LinearLayout>(Resource.Id.linearLayoutLabelPanel);
layout.SetBackgroundColor(Android.Graphics.Color.ParseColor("#bc000000"));
var txtView = MainActivity.context.FindViewById <TextView>(Resource.Id.txtObjID);
if (maxscore < 0.7)
{
txtView.SetTextColor(Android.Graphics.Color.Red);
}
else if (maxscore < 0.85)
{
txtView.SetTextColor(Android.Graphics.Color.Yellow);
}
else
{
txtView.SetTextColor(Android.Graphics.Color.LightGreen);
}
});
if (MainActivity.SavedDataStore.Vibrate)
{
Xamarin.Essentials.Vibration.Vibrate(200.0);
}
if (MainActivity.SavedDataStore.PlaySound)
{
StartMedia("pop.m4a");
}
}
}
}
}
}
}
}
}
