public async void Sample1Jpg()
{
await _api.Init("eng");
using (var stream = LoadSample("sample1.jpg")) {
var result = await _api.SetImage(stream);
Assert.IsTrue(result);
Assert.AreEqual("The quick brown fox\njumped over the 5\nlazy dogs!\n\n", _api.Text);
var data = _api.Results(PageIteratorLevel.Block).ToList();
Assert.AreEqual(1, data.Count);
Assert.AreEqual("The quick brown fox\njumped over the 5\nlazy dogs!\n\n", data [0].Text);
data = _api.Results(PageIteratorLevel.Paragraph).ToList();
Assert.AreEqual(1, data.Count);
Assert.AreEqual("The quick brown fox\njumped over the 5\nlazy dogs!\n\n", data [0].Text);
data = _api.Results(PageIteratorLevel.Symbol).ToList();
Assert.AreEqual(39, data.Count);
data = _api.Results(PageIteratorLevel.Textline).ToList();
Assert.AreEqual(3, data.Count);
Assert.AreEqual("The quick brown fox\n", data [0].Text);
Assert.AreEqual("jumped over the 5\n", data [1].Text);
Assert.AreEqual("lazy dogs!\n\n", data [2].Text);
Assert.AreEqual(new Rectangle(37, 233, 415, 89), data [2].Box);
data = _api.Results(PageIteratorLevel.Word).ToList();
Assert.AreEqual(10, data.Count);
}
}
public static async Task <OCRData> Detect(IEditableImage Img, Context Ctx, int RectWidth, int RectHeight)
{
if (TesAPI == null)
{
TesAPI = new TesseractApi(Ctx, AssetsDeployment.OncePerInitialization);
await TesAPI.Init("eng");
TesAPI.SetVariable("tessedit_char_whitelist", "0123456789kmKM");
}
OCRData Result = new OCRData();
Result.PngOriginal = Img.ToPng();
// Crop the detection region
Img = Img.Crop((Img.Width / 2) - (RectWidth / 2), (Img.Height / 2) - (RectHeight / 2), RectWidth, RectHeight).ToMonochrome();
Result.PngCropped = Img.ToPng();
using (MemoryStream PngImage = new MemoryStream()) {
using (Bitmap Pic = ProcessImage((Bitmap)Img.GetNativeImage()))
await Pic.CompressAsync(Bitmap.CompressFormat.Png, 100, PngImage);
PngImage.Seek(0, SeekOrigin.Begin);
await TesAPI.SetImage(PngImage);
Result.PngProcessed = PngImage.ToArray();
}
Result.Text = TesAPI.Text;
return(Result);
}
async partial void BtnCropping_Activated(UIBarButtonItem sender)
{
Console.WriteLine(imagenToCrop.Image.Orientation);
Console.WriteLine(imagenToCrop.Image.AccessibilityFrame);
var croppedCGImage = imagenToCrop.Image.CGImage.WithImageInRect(cropArea);
var croppedImage = new UIImage(croppedCGImage);
imagenToCrop.Image = croppedImage;
ScrollViewFoto.ZoomScale = 1;
TesseractApi api = new TesseractApi();
if (await api.Init("eng"))
{
if (await api.SetImage(imagenToCrop.Image.ToNSData()))
{
//lblTexto.Text = api.Text;
var okAlertController = UIAlertController.Create("Encontrado:", api.Text, UIAlertControllerStyle.Alert);
okAlertController.AddAction(UIAlertAction.Create("Ok", UIAlertActionStyle.Default, null));
PresentViewController(okAlertController, true, null);
}
}
}
async void ExtractText()
{
try
{
//await CrossMedia.Current.Initialize();
var xFile = await CrossMedia.Current.TakePhotoAsync(new Plugin.Media.Abstractions.StoreCameraMediaOptions
{
SaveToAlbum = true,
Directory = "Sample",
Name = "test.jpg"
});
//svar filepath = "/storage/emulated/0/Android/data/Tesseract.Android.Tesseract.Android/files/Pictures/Sample/test_3.jpg";
dialog = new ProgressDialog(this);
dialog.SetMessage("Extracting Text");
dialog.Show();
await api.SetImage(xFile.GetStream());
dialog.Hide();
Android.App.AlertDialog.Builder builder1 = new Android.App.AlertDialog.Builder(this);
builder1.SetMessage(api.Text);
builder1.SetCancelable(true);
Android.App.AlertDialog alert11 = builder1.Create();
alert11.Show();
string text = api.Text;
}
catch (Exception e)
{
}
}
private async Task _GetText(Bitmap cropped)
{
if (!TesseractApi.Initialized)
{
await TesseractApi.Init("eng");
}
TesseractApi.SetRectangle(new Tesseract.Rectangle((int)(cropped.Width * 0.24), 10, (int)(cropped.Width * 0.35), (int)(cropped.Height * 0.065)));
TesseractApi.SetWhitelist("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
if (await TesseractApi.SetImage(File.OpenRead(Path.ChangeExtension(ImagePath, "card"))))
{
string s = TesseractApi.Text;
if (Name == "" || Name == "NO TEXT DETECTED")
{
if (s != "")
{
if (s != "" && s[0].ToString() == s[0].ToString().ToLower())
{
s = s.Substring(1, s.Length - 1);
}
TextInfo textInfo = new CultureInfo("en-US", false).TextInfo;
s = textInfo.ToTitleCase(s.ToLower());
}
else
{
s = "NO TEXT DETECTED";
}
Name = s;
}
}
}
public async void TestWithoutDispiose ()
{
ITesseractApi api = new TesseractApi (Android.App.Application.Context, AssetsDeployment.OncePerInitialization);
await api.Init ("eng");
for (int i = 0; i < 20; i++) {
using (var stream = TesseractApiRecogniseTest.LoadSample ("sample2.png")) {
var result = await api.SetImage (stream);
Assert.IsTrue (result);
Assert.AreEqual ("ABCDE FGHI\nJKLHN OPQR\nSTUVVJXYZ", api.Text);
}
}
api.Dispose ();
}
public async void TestWithoutDispiose ()
{
ITesseractApi api = new TesseractApi ();
await api.Init ("eng");
for (int i = 0; i < 20; i++) {
using (var stream = TesseractApiRecogniseTest.LoadSample ("sample2.png")) {
var result = await api.SetImage (stream);
Assert.IsTrue (result);
Assert.AreEqual ("ABCDE FGHI\nJKLHN OPQR\nSTUVVJXYZ\n\n", api.Text);
}
}
api.Dispose ();
}
public async void TestWithoutDispiose()
{
ITesseractApi api = new TesseractApi(Android.App.Application.Context, AssetsDeployment.OncePerInitialization);
await api.Init("eng");
for (int i = 0; i < 20; i++)
{
using (var stream = TesseractApiRecogniseTest.LoadSample("sample2.png")) {
var result = await api.SetImage(stream);
Assert.IsTrue(result);
Assert.AreEqual("ABCDE FGHI\nJKLHN OPQR\nSTUVVJXYZ", api.Text);
}
}
api.Dispose();
}
public async void TestWithoutDispiose()
{
ITesseractApi api = new TesseractApi();
await api.Init("eng");
for (int i = 0; i < 20; i++)
{
using (var stream = TesseractApiRecogniseTest.LoadSample("sample2.png")) {
var result = await api.SetImage(stream);
Assert.IsTrue(result);
Assert.AreEqual("ABCDE FGHI\nJKLHN OPQR\nSTUVVJXYZ\n\n", api.Text);
}
}
api.Dispose();
}
async Task <string> IORC.ORCWorkDashbordVehicle(byte[] data)
{
string textResult = null;
ITesseractApi api = new TesseractApi(Android.App.Application.Context, AssetsDeployment.OncePerVersion);
bool initialised = await api.Init("eng");
if (initialised)
{
bool success = await api.SetImage(data);
if (success)
{
textResult = api.Text;
}
}
return(textResult);
}
protected override async void OnActivityResult(int requestCode, [GeneratedEnum] Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
if (requestCode == PickImageId)
{
if (resultCode == Result.Ok && Intent != null)
{
Uri uri = data.Data;
imageView.SetImageURI(uri);
Stream stream = ContentResolver.OpenInputStream(uri);
TesseractApi api = new TesseractApi(this, AssetsDeployment.OncePerVersion);
await api.Init("chi_sim");
await api.SetImage(PathUtil.GetActualPathFromFile(this, data.Data));
string text = api.Text;
textView.SetText(text, BufferType.Normal);
}
}
}
public async void OnPreviewFrame(byte[] data, Android.Hardware.Camera camera)
{
if (syncObj)
{
return;
}
if (!_api.Initialized)
{
return;
}
syncObj = true;
await _api.SetImage(ConvertYuvToJpeg (data, camera));
var results = _api.Results(PageIteratorLevel.Block);
foreach (var result in results)
{
Log.Debug("TextureViewActivity", "Word: \"{0}\", confidence: {1}", result.Text, result.Confidence);
}
syncObj = false;
}
public async Task <Tuple <string, ImageSource> > AndroidTesseractStart(ImageSource image)
{
Context context = Android.App.Application.Context;
string result = "";
ImageSource resultImg = image; // Default
try
{
string whitelist = "01234556789"; whitelist += "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; whitelist += "abcdefghijklmnopqrstuvwxyz";
TesseractApi api = new TesseractApi(context, AssetsDeployment.OncePerInitialization);
await api.Init("eng");
api.SetWhitelist(whitelist);
Bitmap bitmap = await GetBitmapFromImageSourceAsync(image, context); //ImageSource -> Bitmap
Bitmap rebitmap = BitMapWidthCutting(bitmap); //BitMap Width cut in half
rebitmap = BitMapLineDelete(rebitmap, 2); //BitMap Line Delete
//BitMapChack(rebitmap); //Console Write BitMap
resultImg = BMPtoImgsource(rebitmap); // BitMap -> ImageSource
byte[] bitmapData = ConvertBitmapToByte(rebitmap); //BitMap - > Byte[]
bool success = await api.SetImage(bitmapData);
if (success)
{
result = api.Text;
}
return(Tuple.Create(result, resultImg));
}catch (Exception e)
{
return(Tuple.Create(e.Message, resultImg));;
}
}
//Text aus Bild
public static async Task <string> getText(Bitmap img)
{
if (api != null)
{
string textResult = "";
byte[] greyByte = ImageOp.getBytesFromBitmap(img);
bool success = await api.SetImage(greyByte);
if (success)
{
textResult = api.Text;
}
return(textResult);
}
else
{
System.Console.WriteLine("Error API not Set");
}
return(null);
}
public async Task onPictureTakeAsync(byte[] data, Camera camera)
{
/*ContextWrapper cw = new ContextWrapper(ApplicationContext);
imageFileFolder = cw.GetExternalFilesDir(Android.OS.Environment.DirectoryPictures);
Calendar c = Calendar.Instance;
imageFileName = new Java.IO.File(imageFileFolder, c.Time.Seconds + ".bmp");
imageFileName.CreateNewFile();
using (var os = new FileStream(imageFileName.AbsolutePath, FileMode.Create))
{
os.Write(data, 0, data.Length);
}
*/
TesseractApi tesseractApi = new TesseractApi(ApplicationContext, AssetsDeployment.OncePerInitialization);
if (!tesseractApi.Initialized)
await tesseractApi.Init("eng");
var tessResult = await tesseractApi.SetImage(data);
if (tessResult)
{
var a = tesseractApi.Text;
var b = a;
}
Bitmap cameraBitmap = BitmapFactory.DecodeByteArray(data, 0, data.Length);
int wid = cameraBitmap.Width;
int hgt = cameraBitmap.Height;
Bitmap resultImage = Bitmap.CreateBitmap(wid, hgt, Bitmap.Config.Argb8888);
Canvas canvas = new Canvas(resultImage);
canvas.DrawBitmap(cameraBitmap, 0f, 0f, null);
image.DrawingCacheEnabled = true;
image.Measure(MeasureSpec.MakeMeasureSpec(300, MeasureSpecMode.Exactly),
MeasureSpec.MakeMeasureSpec(300, MeasureSpecMode.Exactly));
image.Layout(0, 0, image.MeasuredWidth, image.MeasuredHeight);
image.BuildDrawingCache(true);
Bitmap layoutBitmap = Bitmap.CreateBitmap(image.DrawingCache);
image.DrawingCacheEnabled = false;
canvas.DrawBitmap(layoutBitmap, 80f, 0f, null);
ContextWrapper cw = new ContextWrapper(ApplicationContext);
imageFileFolder = cw.GetExternalFilesDir(Android.OS.Environment.DirectoryPictures);
imageFileName = new Java.IO.File(imageFileFolder, DateTime.Now.Ticks.ToString() + ".jpg");
imageFileName.CreateNewFile();
try
{
using (var os = new FileStream(imageFileName.AbsolutePath, FileMode.Create))
{
resultImage.Compress(Bitmap.CompressFormat.Jpeg, 95, os);
}
}
catch (Exception e)
{
Log.Debug("In Saving File", e + "");
}
dialog.Dismiss();
var activity = new Intent(this, typeof(ImageActivity));
activity.PutExtra("AbsolutePath", imageFileName.AbsolutePath);
StartActivity(activity);
Finish();
//StartActivity(typeof(ImageActivity));
}
public async void NullStringTest()
{
await _api.Init("eng");
await _api.SetImage((string)null);
}
protected override async void OnActivityResult(int requestCode, Android.App.Result resultCode, Intent data)
{
base.OnActivityResult(requestCode, resultCode, data);
ProgressDialog progress = new ProgressDialog(this);
progress.Indeterminate = true;
progress.SetProgressStyle(ProgressDialogStyle.Spinner);
progress.SetMessage("Kraunama...");
progress.SetCancelable(false);
progress.Show();
try
{
System.Console.WriteLine("OnActivityLoad eventas");
Intent mediaScanIntent = new Intent(Intent.ActionMediaScannerScanFile);
Uri contentUri = Uri.FromFile(Failosas._file);
mediaScanIntent.SetData(contentUri);
// SendBroadcast(mediaScanIntent);
int height = Android.Content.Res.Resources.System.DisplayMetrics.HeightPixels;
int width = Android.Content.Res.Resources.System.DisplayMetrics.WidthPixels;
Failosas.bitmap = Failosas._file.Path.LoadAndResizeBitmap(width, height);
if (Failosas.bitmap != null)
{
System.Console.WriteLine("Got bitmap, doing OCR...");
TesseractApi api = new TesseractApi(mContext, AssetsDeployment.OncePerInitialization);
await api.Init("eng");
api.SetPageSegmentationMode(Tesseract.PageSegmentationMode.SparseText);
await api.SetImage(Failosas._file.Path);
RunOnUiThread(() => {
string text = api.Text;
System.Console.Error.WriteLine("Gautas text: " + text);
Android.Widget.Toast.MakeText(this, "Pagaliau! :D", Android.Widget.ToastLength.Long).Show();
progress.Hide();
Android.Support.V7.App.AlertDialog.Builder alert = new Android.Support.V7.App.AlertDialog.Builder(this);
alert.SetTitle("Gavom teksta");
alert.SetMessage(text);
alert.SetPositiveButton("nieko gero! :D", (senderAlert, args) =>
{
Android.Widget.Toast.MakeText(this, "Gerai kad supratai!", Android.Widget.ToastLength.Short).Show();
});
Dialog dialog = alert.Create();
dialog.Show();
});
}
else
{
Android.Widget.Toast.MakeText(this, "Blogas image!", Android.Widget.ToastLength.Short).Show();
}
}
catch (Exception ex)
{
System.Console.WriteLine("Klaida darant OCR: " + ex.ToString());
progress.Hide();
Android.Widget.Toast.MakeText(this, "Klaida darant OCR!", Android.Widget.ToastLength.Long).Show();
}
finally
{
GC.Collect();
progress.Hide();
}
}