tesserocr | A Python wrapper for the tesseract-ocr API | Computer Vision library

There are several tutorial how to build tesseract on windows with cmake and VS e.g. https://bucket401.blogspot.com/2021/03/building-tesserocr-on-ms-windows-64bit.html (you can ignore end of tutorial - python module), minimalist tesseract or with clang

This link provides me the answer. Its removing the noise in the background image.

This looks like that the leptonica-related includes are not in the includes-path of gcc. Check their location and then extend $C_INCLUDE_PATH accordingly.

tesserocr isn't detecting any text due to the small text height or small text size. By cropping the text region and using that image, pytesseract could extract the text. Using contour and dilation to detect text area didn't work either due to small text size. To detect the text region, I used EAST model to extract all regions using this solution and combined all the regions. Passing the extracted combined region image to tesseract returns the text. To run this script, You need to download the model which can be found here and install the required dependencies.
Python Script:

I have resolved this issue. To have Python tool running on local system I did following steps

1. set os.environ['MAGICK_HOME'] = './'
2. setting hidden import of tessor OCR python pkg dependencies
3. upgrading setuptools to > 45.0.0.0 (pip install --upgrade setuptools)

Here is working example for presented images:

I think the problem is that api->Recognize() expects a pointer as first argument. They mistakenly put a 0 in their example but it should be nullptr. 0 and nullptr both have the same value but on 64bits systems they don't have the same size (usually ; I assume on some weird non-x86 systems this may not be true either).

Their example still works with a C++ compiler because the compiler is aware that the function expects a pointer (64bits) and fix it silently.

In your example, it seems you haven't specified the exact prototype of TessBaseAPIRecognize() to ctypes. So ctypes can't know a pointer (64 bits) is expected by this function. Instead it assumes that this function expects an integer (32 bits) --> it crashes.

My suggestions:

1. Use ctypes.c_void_p(None) instead of 0
2. If you intend to use that in production, specify to ctypes all the function prototypes
3. Be careful with the examples you look at: Those examples use Tesseract base API (C++ API) whereas if you want to use libtesseract with Python + ctypes, you have to use Tesseract C API. Those 2 APIs are very similar but may not be identical.

If you need further help, you can have a look at how things are done in PyOCR. If you decide to use PyOCR in your project, just beware that the license of PyOCR is GPLv3+, which implies some restrictions.

For me later on these command goes for the error -