Tesseract 4.x is an old and unsupported version.

So it would be nice if you could provide an example code with the public
API that causes the read-access violation problem.
function AdaptiveClassifierIsEmpty is not part of the public API (
https://github.com/tesseract-ocr/tesseract/tree/main/include/tesseract).


Zdenko


št 22. 9. 2022 o 8:42 Darren Morby <[email protected]> napísal(a):

> This is in Tesseract 4.01.
>
> I get a read-access violation in this function in classify.h:
>
>   bool AdaptiveClassifierIsEmpty() const {
>     return AdaptedTemplates->NumPermClasses == 0;
>   }
>
> This function does not check that AdaptedTemplates is nullptr or not
> nullptr.  It is being called by Tesseract::recog_all_words, which in turn
> is being called by TessBaseAPI::Recognize.  Is there a function that I
> should call to make sure that the Tesseract object is being initialized
> correctly?
>
> I notice that only two functions actually make sure that AdaptedTemplates
> is not nullptr: InitForAnalysePage and FindLines().  Should I be calling
> one of these functions before Recognize?  (InitForAnalysePage curiously
> says that "Calls that attempt recognition will generate an error" but I
> don't see why.)
>
> Thanks.
>
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