I don't know if this adds on anything, but maybe you have some insight in this. I find that this works fine on more modern computer set-ups, but fails on older ones. One of the systems I tried to run this code on is using an i5 2400 and it simply crashes even without an error. Again, the debug version works on it, but the release build does not.
On Thursday, December 31, 2020 at 3:31:41 PM UTC-6 zdenop wrote: > I am not able to reproduce the problem - but I do not use vcpkg (so maybe > there is problem): > > 1. I used official opencv for windows > https://netix.dl.sourceforge.net/project/opencvlibrary/4.5.1/opencv-4.5.1-vc14_vc15.exe > > -> Installed to F:\opencv2 > 2. Because of using opencv2 I prefer to use "minimalistic tesseract" as > described in https://spell.linux.sk/building-minimalistic-tesseract > 3. As input image I used > https://user-images.githubusercontent.com/71965365/94549264-84b00980-0284-11eb-9a28-0135d8c74de1.jpg > 4. If there any strange behaviour you should use official training data: > e.g. I used > https://github.com/tesseract-ocr/tessdata_best/blob/master/eng.traineddata > 5. Modified code (tess_cv.cpp) looks like this: > #include <tesseract/baseapi.h> > #include <leptonica/allheaders.h> > #include <opencv2/opencv.hpp> > > int main() { > std::string imPath = "image.jpeg"; > cv::Mat im = cv::imread(imPath, cv::IMREAD_GRAYSCALE); > > setMsgSeverity(9); // turn off leptonica messages > > tesseract::TessBaseAPI* ocr = new tesseract::TessBaseAPI(); > > if (ocr->Init(NULL, "eng")) { > std::cout << "Failed to initialize." << std::endl; > } else { > > ocr->SetVariable("user_defined_dpi", "96"); > ocr->SetImage(im.data, im.cols, im.rows, 1, im.cols); > > std::cout << "test1" << std::endl; > > char* str = ocr->GetUTF8Text(); > std::cout << str << std::endl; > std::cout << "test2" << std::endl; > > ocr->Clear(); > > ocr->End(); > > delete ocr; > if (str) > delete[] str; > } > > system("pause"); > } > > 6. Compiled from command line with: > cl /EHsc tess_cv.cpp /If:\win64_msvc_min\include > /If:\opencv2\opencv\build\include /link /LIBPATH:F:/WIN64_MSVC_MIN/LIB > /LIBPATH:F:/WIN64_MSVC_MIN/LIB > /LIBPATH:f:\opencv2\opencv\build\x64\vc15\lib\ tesseract50.lib > leptonica-1.81.0.lib opencv_world451.lib /machine:x64 /out:tess_cv.exe > > Output of tess_cv.exe: > test1 > Python3WebSpider > > test2 > > 8. The statement *using namespace std* is generally *considered* bad > practice and is known (in past) to cause compilation errors with > tesseract. > > Zdenko > > > št 31. 12. 2020 o 21:22 Minseok Kim <minseok....@gmail.com> napísal(a): > >> #include <iostream> >> #include <string> >> #include <tesseract/baseapi.h> >> #include <leptonica/allheaders.h> >> #include <opencv2/opencv.hpp> >> >> using namespace std; >> using namespace cv; >> >> int main() >> { >> string outText = "", imPath = "image.jpeg"; >> Mat im = cv::imread(imPath, cv::IMREAD_GRAYSCALE); >> cv::bitwise_not(im, im); >> cv::imwrite("image_inverted.jpeg", im); >> >> tesseract::TessBaseAPI* ocr = new tesseract::TessBaseAPI(); >> >> if (ocr->Init(NULL, "Impact")) >> { >> cout << "Failed to initialize." << endl; >> } >> else >> { >> //ocr->SetVariable("tessedit_char_whitelist", "ABCDEFGHIJKLMNOP"); >> ocr->SetVariable("user_defined_dpi", "96"); >> //ocr->SetVariable("unlv_tilde_crunching", "false"); >> //ocr->SetImage(im.data, im.cols, im.rows, 1, im.cols); >> Pix* image = pixRead("image_inverted.jpeg"); >> ocr->SetImage(image); >> >> cout << "test1" << endl; >> char* str = ocr->GetUTF8Text(); >> outText = string(str); >> cout << outText << endl; >> cout << "test2" << endl; >> >> ocr->Clear(); >> //ocr->End(); >> >> delete ocr; >> if (str) >> delete[] str; >> pixDestroy(&image); >> } >> >> system("pause"); >> } >> >> VS2019 - v142 >> Windows 10 >> vcpkg build of Tesseract (static libs) - 4.1.1#5 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "tesseract-ocr" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to tesseract-oc...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/tesseract-ocr/774d1a41-1e6e-4bcd-951f-290e3b65e723n%40googlegroups.com >> >> <https://groups.google.com/d/msgid/tesseract-ocr/774d1a41-1e6e-4bcd-951f-290e3b65e723n%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "tesseract-ocr" group. To unsubscribe from this group and stop receiving emails from it, send an email to tesseract-ocr+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/tesseract-ocr/2ef3768e-267a-4308-a203-de974971f06bn%40googlegroups.com.
