//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 InvertImage(ImageOp innerOp)
: base(innerOp)
{
}
public BaseImageOp(ImageOp innerOp)
{
_innerOp = innerOp;
}
public AddImageInfo(ImageOp innerOp)
: base(innerOp)
{
}
protected override async void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
//Set View
SetContentView(Resource.Layout.TestArea);
//Open CV
mOpenCvCameraView = FindViewById <CameraBridgeViewBase>(Resource.Id.TestGreyView);
mOpenCvCameraView.Visibility = ViewStates.Visible;
mOpenCvCameraView.SetCvCameraViewListener2(this);
mLoaderCallback = new Callback(this, mOpenCvCameraView);
//Textview
textseekThresh = FindViewById <TextView>(Resource.Id.TestAreaTextSeek1);
textseekBlur = FindViewById <TextView>(Resource.Id.TestAreaTextSeek2);
textseekSize = FindViewById <TextView>(Resource.Id.TestAreaTextSeek3);
textResult = FindViewById <TextView>(Resource.Id.TestAreaResultText);
//Get Buttons
buttonDetectText = FindViewById <Button>(Resource.Id.TestAreaButtonDetectText);
buttonSelectImageGallery = FindViewById <Button>(Resource.Id.TestAreaSelectImageGallery);
buttonExtractText = FindViewById <Button>(Resource.Id.TestAreaButtonExtractText);
buttonGrey = FindViewById <Button>(Resource.Id.TestAreaButtonGrey);
buttonSize = FindViewById <Button>(Resource.Id.TestAreaButtonSize);
//ImageView
imgInput = FindViewById <ImageView>(Resource.Id.TestAreaImageView);
imgResult = FindViewById <ImageView>(Resource.Id.TestAreaImageResultGrey);
//Event Listeners
buttonGrey.Click += delegate
{
Bitmap img = ((BitmapDrawable)imgInput.Drawable).Bitmap;
double thresh = Convert.ToDouble(textseekThresh.Text.ToString());
double blur = Convert.ToDouble(textseekBlur.Text.ToString());
Bitmap result = ImageOp.greyImg(img, thresh, blur);
imgResult.SetImageBitmap(result);
};
buttonDetectText.Click += delegate
{
Bitmap img = ((BitmapDrawable)imgResult.Drawable).Bitmap;
Bitmap result = ImageOp.detectTextRect(img);
imgResult.SetImageBitmap(result);
};
buttonExtractText.Click += async delegate
{
Bitmap img = ((BitmapDrawable)imgResult.Drawable).Bitmap;
string result = await ImageOp.detectAndExtractText(img);
textResult.Text = result;
};
buttonSize.Click += delegate
{
Bitmap img = ((BitmapDrawable)imgInput.Drawable).Bitmap;
double size = Convert.ToDouble(textseekSize.Text.ToString());
size = size / 100;
Bitmap imgTemp = ImageOp.resizeImage(img, size, size);
double thresh = Convert.ToDouble(textseekThresh.Text.ToString());
double blur = Convert.ToDouble(textseekBlur.Text.ToString());
Bitmap result = ImageOp.greyImg(imgTemp, thresh, blur);
imgResult.SetImageBitmap(result);
};
buttonSelectImageGallery.Click += delegate
{
var imageIntent = new Intent();
imageIntent.SetType("image/*");
imageIntent.SetAction(Intent.ActionGetContent);
StartActivityForResult(Intent.CreateChooser(imageIntent, "Select photo"), 0);
};
//Slider
seekThresh = FindViewById <SeekBar>(Resource.Id.TestAreaSeekBar1);
seekBlur = FindViewById <SeekBar>(Resource.Id.TestAreaSeekBar2);
seekSize = FindViewById <SeekBar>(Resource.Id.TestAreaSeekBar3);
//Slider Listener
seekThresh.ProgressChanged += (object sender, SeekBar.ProgressChangedEventArgs e) =>
{
if (e.FromUser)
{
textseekThresh.Text = string.Format("" + e.Progress);
}
};
seekBlur.ProgressChanged += (object sender, SeekBar.ProgressChangedEventArgs e) =>
{
if (e.FromUser)
{
textseekBlur.Text = string.Format("" + e.Progress);
}
};
seekSize.ProgressChanged += (object sender, SeekBar.ProgressChangedEventArgs e) =>
{
if (e.FromUser)
{
textseekSize.Text = string.Format("" + e.Progress);
}
};
// Tesseract Api einmal bei start erzeugen
api = new TesseractApi(this, AssetsDeployment.OncePerVersion);
bool check = await OCR.initTes(api);
}
public static void ImageOps()
{
Console.WriteLine("\n===> FileOp.ImageInfo");
ImageInfoRet infoRet = ImageOp.ImageInfo("http://" + DEMO_DOMAIN + "/" + key);
PrintRet(infoRet);
if (infoRet.OK)
{
Console.WriteLine("Format: " + infoRet.Format);
Console.WriteLine("Width: " + infoRet.Width);
Console.WriteLine("Heigth: " + infoRet.Height);
Console.WriteLine("ColorModel: " + infoRet.ColorModel);
}
else
{
Console.WriteLine("Failed to ImageInfo");
}
Console.WriteLine("\n===> FileOp.ImageExif");
CallRet exifRet = ImageOp.ImageExif("http://" + DEMO_DOMAIN + "/" + key);
PrintRet(exifRet);
if (!exifRet.OK)
{
Console.WriteLine("Failed to ImageExif");
}
Console.WriteLine("\n===> FileOp.ImageViewUrl");
ImageViewSpec viewSpec = new ImageViewSpec {
Mode = 0, Width = 200, Height = 200
};
string viewUrl = ImageOp.ImageViewUrl("http://" + DEMO_DOMAIN + "/" + key, viewSpec);
Console.WriteLine("ImageViewUrl 1:" + viewUrl);
viewSpec.Quality = 1;
viewSpec.Format = "gif";
viewUrl = ImageOp.ImageViewUrl("http://" + DEMO_DOMAIN + "/" + key, viewSpec);
Console.WriteLine("ImageViewUrl 2:" + viewUrl);
viewSpec.Quality = 90;
viewSpec.Sharpen = 10;
viewSpec.Format = "png";
viewUrl = ImageOp.ImageViewUrl("http://" + DEMO_DOMAIN + "/" + key, viewSpec);
Console.WriteLine("ImageViewUrl 3:" + viewUrl);
Console.WriteLine("\n===> FileOp.ImageMogrifyUrl");
ImageMogrifySpec mogrSpec = new ImageMogrifySpec {
Thumbnail = "!50x50r", Gravity = "center", Rotate = 90,
Crop = "!50x50", Quality = 80, AutoOrient = true
};
string mogrUrl = ImageOp.ImageMogrifyUrl("http://" + DEMO_DOMAIN + "/" + key, mogrSpec);
Console.WriteLine("ImageMogrifyUrl:" + mogrUrl);
Console.WriteLine("\n===> Get");
GetRet getRet = rs.Get(key, "save-as");
PrintRet(getRet);
if (getRet.OK)
{
Console.WriteLine("Hash: " + getRet.Hash);
Console.WriteLine("FileSize: " + getRet.FileSize);
Console.WriteLine("MimeType: " + getRet.MimeType);
Console.WriteLine("Url: " + getRet.Url);
}
else
{
Console.WriteLine("Failed to Get");
}
Console.WriteLine("\n===> FileOp.ImageMogrifySaveAs");
PutFileRet saveAsRet = rs.ImageMogrifySaveAs(getRet.Url, mogrSpec, key + ".mogr-save-as");
PrintRet(saveAsRet);
if (saveAsRet.OK)
{
Console.WriteLine("Hash: " + saveAsRet.Hash);
}
else
{
Console.WriteLine("Failed to ImageMogrifySaveAs");
}
Console.WriteLine("\n===> Get");
getRet = rs.Get(key + ".mogr-save-as", "mogr-save-as.jpg");
PrintRet(getRet);
if (getRet.OK)
{
Console.WriteLine("Hash: " + getRet.Hash);
Console.WriteLine("FileSize: " + getRet.FileSize);
Console.WriteLine("MimeType: " + getRet.MimeType);
Console.WriteLine("Url: " + getRet.Url);
}
else
{
Console.WriteLine("Failed to Get");
}
}
