Hello guys,

actually I have the same problem described in the previous post.
I also take care about the given hints above respectively the working instruction.
But however, there is still the Problem "An unhandled exception of type 'System.Exception' occurred in Patagames.Ocr.dll".

2nd question: I have implemented this in an Console Application. Is this possible? Or is this maybe the Problem?

Here is my Code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Patagames.Ocr;
using Patagames.Ocr.Enums;
using System.Drawing;


namespace tesTest
{
class Program
{
public static object Bitmap { get; private set; }

static void Main(string[] args)
{
OcrApi.PathToEngine = @"C:........\x64\tesseract.dll";
using (var api = OcrApi.Create())
{
api.Init(Languages.English);

using (var bmp = Image.FromFile(@"C:.....jpg", true) as Bitmap)
{
string plainText = api.GetTextFromImage(bmp);
}
}
}
}

}



Thank for you help.

Greetings

Hello Paul,

actually, I do not know, what you want with the stack trace exactly? Could you explain this?

The error occurred while calling "using (var api = OcrApi.Create())"

The error is: "An unhandled exception of type 'System.Exception' occurred in Patagames.Ocr.dll
Additional information: Unable to load DLL 'tesseract.dll': The specified module could not be found. Please make sure that you copy it to the application folder. Alternatively, you can specify the full path to the tesseract.dll file using specificPath parameter in the TessBaseAPICreate method"

The .dll is for sure in the project. Maybe a solution would be do put the complete path inside. How would that work? Can you give an example? I can’t find method descriptions regarding the Patagames.Ocr.dll.


Greetings

I have 2 solutions using tesseract OCR, one is a console app and it works, code below ...

using Patagames.Ocr;

static void Main(string[] args)
{
OcrApi.LicenseKey = "<my key>";
using (var api = OcrApi.Create())
{
api.Init(Patagames.Ocr.Enums.Languages.English);

using (var bmp = Bitmap.FromFile(@"C:\CodedUITest\Screenshots\Capture.bmp") as Bitmap)
{

string plainText = api.GetTextFromImage(bmp);
}
}
}

After having success with my console app, I have done the same thing in a CodedUI test project (basically like unit testing but where tests can be recorded).

[TestMethod()]
public void CodedUI_Assert_StateString_Active()
{
String filename = "my_screen_dump";

OcrApi.LicenseKey = "<my key here>";
OcrApi.PathToEngine = @"C:\Users\<user>\Documents\CodedUITest_System\CodedUITesting\tesseract.dll";

using (var api = OcrApi.Create())
{
api.Init(Patagames.Ocr.Enums.Languages.English);

using (var bmp = Bitmap.FromFile(@"C:\CodedUITest\Screenshots\" + filename + ".bmp") as Bitmap)
{
string plainText = api.GetTextFromImage(bmp);
}
}
}

I get the error ...


Result Message:
Test method CodedUITesting.Common_Tests_Suite.CodedUI_Assert_StateString_Active threw exception:
System.Exception: Unable to load DLL 'tesseract.dll': The specified module could not be found. Please make sure that you copy it to the application folder. Alternatively, you can specify the full path to the tesseract.dll file using specificPath parameter in the TessBaseAPICreate method



As you can see, I have specified the OcrApi.PathToEngine and I have checked it by copying the folder to explorer and pasting the folder name in and it does find the folder and tesseract.dll is there.

Any ideas why this won't work in my testing solution? I think I know what I'm doing because I got it to work before or is the problem that I have 2 solutions and tesseract is somehow using something from my first solution in my second solution that doesn't work?

Any help appreciated.

Edited by user Friday, April 28, 2017 8:27:20 AM(UTC)  | Reason: Not specified

Do you setup library as described here?
https://tesseract.pataga...e6-b6e9-9df777c4678c.htm

Hi All,

My previous post problem on Tesseract.Net SDK version 1.20.342.
I test on the Unit Test Project (.NET Framework) base on .NET Framework 4.8 and has error as follow:

Setting OcrApi.PathToEngine also does not work, same error.

However, I try to test again with the same code on the MSTest Test Project base on .NET Core 3.1 (Long-Term Support).
It work as run on console application (No need to set OcrApi.PathToEngine).

I don'nt know, why. I need to test OCR with other test on the Unit Test Project. Can anyone guide me, please.