Tesseract (Screen OCR) UDF

[JRowe]

Yes. As a Java OCR engine, the Java Runtime is required. Something you should have, anyway. It seems almost as ubiquitous as flash, these days.

[dvcz38]

Nice work again seangriffin!

Note: For english recognition, also need to download http://tesseract-ocr.googlecode.com/files/...2.00.eng.tar.gz

Other language data files also available from http://code.google.com/p/tesseract-ocr/downloads/list

Tesseract seem not to support Chinese recognition,and not to accurately recognite the number when i run TesseractControlCapture.au3

[litlmike]

The link to the Tesseract installer (.exe) is not working, is there another place we can get it?

[Kuroro]

hello..

i like this UDF..

thank you very much..

Edited June 1, 2009 by Kuroro

[JerryLiang]

Hi Malakith,

Yes I think anyone with Vista that uses the "$show_capture = 1" parameter will get this error. This code came from another AutoIT forum topic. The code accesses the "Windows Image and Fax Viewer" object that comes with Windows XP. I use this because it supports the TIFF files generated by Tesseract. I believe the "Windows Image and Fax Viewer" has been removed from Windows Vista, and this is why you are getting the error. I use Windows XP myself. If anyone has a TIFF viewer solution for both Win XP and Vista I'd like to know!

HI,

Just want to let you know, I got the same issue with Window 7 RC. Its a nice library, hope you can fix it.

Jerry

[Andrus]

Hi,

I have a problem with using this UDF within the loop. It seems to me, that some part of memory is not freed after the functions finishes. Runnig it in the loop causes memory outage and results in error message:

_WinAPI_CreateCompatibleBitmap: W magazynie brak miejsca dla wykonania tego polecenia

wich could be translated like:

_WinAPI_CreateCompatibleBitmap: There is no enough room in the storage to run this task

I've tried to find the place where the memory leak could be possible, but I failed. I'd be greatfull for any clue or help with solving this issue.

Some more explenation:

I have 1GB of RAM, and about 600MB of that memory is free at the script startup. After about 5 minutes and about 500

$tmp = _TesseractScreenCapture(0, "", 1, 3, 690, 168, 900, 750, 0)

function calls, I got the above error. The memory state at this time is about 400MB of free memory.

[WHICKED]

For the life of me, I cant get this blasted thing to work, I have installed Tesseract, and tried to do one function, and it fails, it does not capture, and it will not parse out the text.

[seangriffin]

REQUIREMENTS:

Java runtime is required?

Nothing happens if I run the sample, it just opens IE page & thats it, it just sits there. i do not have java.

I may have mistakenly had Java in the REQUIREMENTS section of the UDF at one time. I have since corrected that. Java isn't required.

Not sure why the samples are not working for you. I would suspect that Tesseract may not be installed correctly on your computer.

If the Tesseract install worked, you should have the following file on your computer:

"C:\Program Files\tesseract\tesseract.exe"

Check if this file exists.

[Jefferds44]

Sean (or anyone else),

I'm trying to work with the UDF, but I don't seem to be able to make it work. It seems to be broken for me at the base level. I'm testing the CaptureToTIFF() function, and it only outputs a blank .tif file.

I have the latest version of Tesseract installed in my program files directory.

Here's my script:

#include <Tesseract.au3>

$left_indent = 0
$top_indent = 0
$right_indent = 0
$bottom_indent = 0
$show_capture = 1

CaptureToTIFF("Calculator", "", "", "test01.tif", "", $left_indent, $top_indent, $right_indent, $bottom_indent)

[triene]

this is an awesome script. it works very well for me.

but, i had some probs with the scaling too.

how di i figure out these ident values from given pixel cords?

as for now im running it over and over again, while adjusting the values, to get the desired part of the screen captured using _TesseractWinCapture.

would it be possible to change the tesseract functions to use normal pixel cords, to become more user friendly?

[Proph]

It seems that my tiff files are stretched out. So it makes it harder for the OCR to be correct. I am trying to use this on Norton Antivirus. I have to put the Scale to like 30... but it is so stretched out there are only a few words that it actually finds. >_

[VAG]

I would like to use this UDF to do a OCR capture of a customized Tooltips. I cannot directly read the tooltip string using WinGetText()..so I'm thinking of feeding _TesseractControlCapture() with the Tooltip window info. But I only can get the following info from this tooltip. How do I put them into _TesseractControlCapture() parameters?

Window Handle: 0x002E01C6

Window Class: Afx:1da0000:8

Window Title:

Window Text:

Window Process: 1960

My General Help & Support Post

Edited September 1, 2009 by VAG

[JohnOne]

this is an awesome script. it works very well for me.

but, i had some probs with the scaling too.

how di i figure out these ident values from given pixel cords?

as for now im running it over and over again, while adjusting the values, to get the desired part of the screen captured using _TesseractWinCapture.

would it be possible to change the tesseract functions to use normal pixel cords, to become more user friendly?

Been the same today, farting about with trying to get the correct location

It dosent seem to work according to any earthly logic, you change the left indent and it pushes the whole capture area over and does all sorts of bananas things.

I got it right after an hour or so moving 2/2 pixes at a time at either end, it worked great, I went for a crap, come back and it was taking an image of another part of the screen

Anyone know how to get this working with human coords ?

Or if not, even explain the indent workings ?

EDIT:

sorry I didnt realize this was in examples (came into it via via the aearch)

Edited September 6, 2009 by JohnOne

[Hawkwing]

sorry I didnt realize this was in examples (came into it via via the aearch)

Erm, could you point me to the example that helped you figure out how to use coords with this?

[Horrendous]

I am confused. I have a window pos:0,0 size:800,573 and i need to read region at pos:230,360 size:90,30.

Please, could you help me with params?

$x=_TesseractScreenCapture(0,"",1,2,?,?,?,?,0)

msgbox(0,"",$x)

[Belfigor]

Is there any way to define my own font for Tesseract to recognize?

[Horrendous]

Is there any way to define my own font for Tesseract to recognize?

http://code.google.com/p/tesseract-ocr/wiki/TrainingTesseract

There..

[Belfigor]

http://code.google.com/p/tesseract-ocr/wiki/TrainingTesseract

There..

Thank you!

[JohnOne]

Erm, could you point me to the example that helped you figure out how to use coords with this?

Sorry Hawkwing

I only just seen your post

I meant, I didnt realize I had posted in the example scripts forum.

Was too tedious for me so I used simpletesseract which has modified earthling co-ordinates

[seangriffin]

The link to the Tesseract installer (.exe) is not working, is there another place we can get it?

Apologies for the long, long, (long), delay in getting back to this topic.

Perhaps the server hosting Tesseract201.exe was down at one point, but it's definitely working at the moment.

http://web.aanet.com.au/seangriffin/Tesseract201.exe