drawing (WRITING) in c#

This depends on what exactly do you mean by "Drawing"?
Do you mean you draw a sting over a Windows Form and you want to check if it contains "ABCD … Z" letters?
Or you already have an image that contains text, and you want to check if it contains the correct pattern of letters?

Generally, to recognize text in images, you might need to use an OCR engine to recognize the text. But again this depends on the drawings that you are referring to.

For example, if you have an image that contains text (image based) and you want to extract it the image and check it, you can use LEADTOOLS .NET OCR engine that receives an image, recognize (OCR) it and return the recognized text.

The following C# code shows how you can OCR an image using LEADTOOLS .NET SDK:

IOcrEngine _ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD, false);
// Startup the engine
_ocrEngine.Startup(null, null, null, null);
using (IOcrDocument ocrDocument = _ocrEngine.DocumentManager.CreateDocument())
{
RasterImage _ocrimage = null;
using (RasterCodecs codecs = new RasterCodecs())
{
_ocrimage = codecs.Load(@"C:\source.png");
if (_ocrimage != null)
{
using (IOcrPage ocrPage = ocrDocument.Pages.AddPage(_ocrimage, null))
{
ocrPage.Recognize(null);
Console.WriteLine(ocrPage.GetText(-1));
}
_ocrimage.Dispose();
}
}

You can find more details here:
https://www.leadtools.com/help/leadtools/v20/dh/fo/ocrenginemanager.html

1 Reply

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Maen Badwan7y ago
This depends on what exactly do you mean by "Drawing"?
Do you mean you draw a sting over a Windows Form and you want to check if it contains "ABCD … Z" letters?
Or you already have an image that contains text, and you want to check if it contains the correct pattern of letters?

Generally, to recognize text in images, you might need to use an OCR engine to recognize the text. But again this depends on the drawings that you are referring to.

For example, if you have an image that contains text (image based) and you want to extract it the image and check it, you can use LEADTOOLS .NET OCR engine that receives an image, recognize (OCR) it and return the recognized text.

The following C# code shows how you can OCR an image using LEADTOOLS .NET SDK:
IOcrEngine _ocrEngine = OcrEngineManager.CreateEngine(OcrEngineType.LEAD, false);
// Startup the engine
_ocrEngine.Startup(null, null, null, null);
using (IOcrDocument ocrDocument = _ocrEngine.DocumentManager.CreateDocument())
{
RasterImage _ocrimage = null;
using (RasterCodecs codecs = new RasterCodecs())
{
_ocrimage = codecs.Load(@"C:\source.png");

if (_ocrimage != null)
{
using (IOcrPage ocrPage = ocrDocument.Pages.AddPage(_ocrimage, null))
{
ocrPage.Recognize(null);
Console.WriteLine(ocrPage.GetText(-1));
}
_ocrimage.Dispose();
}
}
You can find more details here:
https://www.leadtools.com/help/leadtools/v20/dh/fo/ocrenginemanager.html