Was wondering if I used this method The method for Tesseract training
To add new fony style as eng letters.
will It overwrite the original fonts I already had ?
Or it will be added to the existing fonts that was brought with Tesseract by default with installation?
Thanks a lot
Max
Related
Installing and using any trainer for tesseract
I was searching for a solution to train my tesseract and create a language file, now for 3 months, am not a professional programmer so am trying to learn, I need it to build an automatic solution for a project I have, but I didn't found any tutor video or any topic about installing any train extension or software and use , am using spider and python 3 , and have download qt,tests and other but how to use.
I need tutor any documentary can help, like box creating, export and test my file as language.
You can use JTessBoxEditor.
1)Provide the image
2)Generate boxes
3)Train your tesseract with generated boxes.
These are the steps.
Also you can train using txt file. Here is tutorial about it.
https://www.youtube.com/watch?v=i_1-hGsXxy8
I have an image and I want to convert it text file to use in word processing software. 1) Can it be done in any software. 2) Is it possible to write a program in Matlab or any other language that can convert it to text. The font is really poor in the image file.
You're talking about OCR where there are existing libraries that can be used for this. I suggest you take a look at Leadtools OCR. I used it in .NET environment and it can convert images to text.
Yes, it can be converted into text by using softwares like Microsoft OneNote or others. You can also write programmes for creating an OCR in most of the programming languages.
As discussed on this SO Question, tesseract often operates better with .png files than with .tiff files. (I have also experienced this directly myself). Unfortunately, there are fewer box editors available that can handle .png files. I therefore am tempted to train my data using .tiff files but then use .png files for my main OCR work. Will doing so reduce the effectiveness of the training? If so, are there any ways to address it (other than just finding a box editor that can accept .png files)?
Some editors such as jTessBoxEditor (Tesseract AddOns page) support both TIFF and PNG formats. Since TIFF can be multi-page image, it can have a lot more samples for your character set than single-page PNG.
https://github.com/tesseract-ocr/tesseract/wiki/TrainingTesseract
I'm using OCR to develop an Android Application using the Tesseract Libs, with the tess-two project, as I saw here: http://gaut.am/making-an-ocr-android-app-using-tesseract/
The app worked fine, but I'm repairing that string returned with the content of a photo, sometimes, comes with strangers characters. Example: I'm reading this: www.caelum.com.br and receiving something like this: r ' . ,wlñzf . 94' kzl 5. vsmNs/.caelumcombr
Searching, I've configured this: baseApi.setVariable("tessedit_char_whitelist", "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
But I think that becomes worst.
I want to read texts in Portuguese and English. So, I downloaded the traineddata for each language and using it as I wish, but these strangers characters have something to do with the encoding project ?
Thanks for help :)
Tesseract recognizes text only for images that contains text and only text. Images that contains only text will be accurately recognized by it and you can get good accuracy too.
However Tesseract gives garbled output for image + text recognition.
I didn't worked on this recognition so can't help further.
So your question should be as to how to crop the image part so that you get only the text part out from image. Like that Tesseract can recognize fine and give desired text in ouput.
Thanks.
I need to add text string to a TIFF image. I am planning to use libTIFF for editing the TIFF image. The plan is to convert text to image using freetype2 and then somehow render the text image on to TIFF. Is this the right approach?
Any pointers on how to convert text to image? I saw the sample code of ft2 - initialising the library, creating face and then setting character sizes. But not sure what to do next? any pointers appreaciated.
One way could be using ImageMagick. They have tools for image composition and text rendering. (and many more)
Although ImageMagick is primarily used from the command line (especially in web environments) several language interfaces are available, too. Java, C, C++, ...
ImgSource is a really nice library for C/C++ on Windows, and it can do this out of the box.
http://www.smalleranimals.com/isource.htm
It's not free, but it's pretty cheap ($59)
You don't tell us which language you need to use, should it be portable or for a given platform, etc.
Using a ready to use existing graphic library, like the (big!) ImageMagick or others like libGD or DevIL might be the easiest way, lot of them have binding for lot of languages.
if youre on windows and in c++ then it's pretty easy to use gdiplus for drawing fonts. you have access to any installed font and you can save the raster out as tiff or jpeg etc as well using the one api.
of course you could also use some combo of freetype and libtiff, but you'll have to build those libs for win32. not that its hard, just more fussing around you may not want to do.