Tessnet2 is a .NET open-source assembly using the Tesseract OCR engine.
Questions tagged [tessnet2]
60 questions
0
votes
1 answer
Tessnet2 close program with System.AccessViolationException
private void Recognize()
{
Bitmap image = new Bitmap(@"C:\OCRTest\test.jpg");
pictureBox1.Image = image;
tessnet2.Tesseract ocr = new tessnet2.Tesseract();
ocr.SetVariable("tessedit_char_whitelist", "0123456789");
…
0
votes
2 answers
C# .net wrapper for tessnet
I try to write wrapper for tessnet OCR library. I am getting an error saying "Cannot marshal 'return value': Generic types cannot be marshaled." for this code section
List k = OCRWrapper.DoOCR(new Bitmap(@"C:\Data\pdf2image\auto.png"), new…
yohan.jayarathna
- 3,423
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0
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0 answers
Tesseract (tessnet2) cannot read simple numbers
I designed a simple code for extracting the text out of images.
The images only contain numbers. This are the images, I want to convert:
The result of the OCR conversion is always ~
For this two images, the OCR conversion is giving results with…
Jan021981
- 521
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0
votes
1 answer
Why Tessnet2 can't extract text?
I using "tessnet2_64.dll"
This is my code , extract text:
try
{
var image = new Bitmap(@"D:\Tessnet2\C#\test2.jpg");
var ocr = new Tesseract();
//…
D T
- 3,522
- 7
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- 89
0
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0 answers
Tesseract giving diffrent results for the same image when "tessedit_char_whitelist" is set and ocr is done
I am using tesseract to find text in scanned image,
I am trying to set "tessedit_char_whitelist" by calling as follows, so that only alphanumeric search is performed
tes_obj.SetVariable("tessedit_char_whitelist",…
user2734779
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- 2
0
votes
1 answer
Tessnet 2 return wrong result
I trying to run tessnet on a bitmap returned from a screenshot created with getwindow function but the result is bad. I tried to run on a bmp file saved in paint. This image is same as image created with getwindow and for this the tessnet work. This…
ezegyfa
- 31
- 2
0
votes
2 answers
Tessnet2 in WebForms .Net returns DllNotFoundException liblept172.dll
I wrote a basic app using Tessnet2 and now trying to move it to a WebForms website.
Copied the logic etc. but when I run it I get an error message(Exception: DllNotFoundException)
"An exception of type System.DllNotFoundException" occured in…
Pete Kozak
- 493
- 1
- 4
- 21
0
votes
1 answer
Tessnet2 (Tesseract) is not returning the correct results - ways to improve output
I am using tessnet2 (tesseract-ocr) in C# on following image:
This is my code:
var image = new Bitmap(@"D:\anuj\a2.jpg");
ocr.Init(@"D:\anuj\OCRTest\tessdata", "eng", false);
var result = ocr.DoOCR(image, Rectangle.Empty);
foreach (Word word in…
user3751794
0
votes
0 answers
Write C# wrapper for latest Tesseract (Like how tessnet did)
I have been using tessnet 2.0 for my project for a while now.
But recently I needed to start using a software written by my colleague, and it is not compatible with the tessnet 2.0 dll which uses .NET 2.0. I guess I will have to find a way to write…
Liren Yeo
- 3,215
- 2
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- 41
0
votes
0 answers
Can't make tessnet2 and tesseract worked to recognize license plate number
I managed to make License Plate Recognition example from emgucv worked. However I didn't get the desired OCR recognition to recognize the license plate number of vehicle at my place.
this is the code
public class LicensePlateDetector :…
Muadzir Aziz
- 27
- 7
0
votes
0 answers
OCR small image with Tessnet
I am trying to OCR following image using tessnet.
Unfortunately it doesn't work. I've tried to Re-scale image or convert this image to bitonal image, but it didn't help.
I am using english language pack with following…
Jack
- 350
- 2
- 15
0
votes
1 answer
Read value from List>
I have following code in my C# project:
List> RecognizedPlates =
DetectLicensePlate(img, licensePlateImagesList, filteredLicensePlateImagesList, licenseBoxList);
foreach (List W in RecognizedPlates)
{
richTextBox1.Text =…
user3259999
0
votes
0 answers
DoOCR Closes active application in C#
I am developing Application in C# about OCR.
I use Tessnet2 as OCR engine, here is my code:
Bitmap image = new Bitmap(pictureBox1.Image);
tessnet2.Tesseract ocr = new tessnet2.Tesseract();
ocr.SetVariable("tessedit_char_whitelist", "0123456789"); //…
user3259999
0
votes
1 answer
Tessract (tessnet2 for .NET) - more than 2 decimal places
I am strugling with a problem of reading data from a table.
If a number has got up to 2 decimal places everything looks OK, when number has got 3 decimal places I am not getting decimal point, ie. (instead of getting 5.575 I am getting…
Jack
- 350
- 2
- 15
0
votes
1 answer
Question regrading which files are needed by tessnet2.dll
I made an application for an automated invoice management system for my company. I am using the tessnet2 library for OCR. The whole application works properly on my development machine but as soon as I put the code on the target machine, wihout the…
Vinamra
- 1