Thanks Soumik, I can access the original image but I guess it must be a
problem with Tesseract accessing the OpenCV mats wherever they exist, which
I'll have to try and work out.
Is there a way to authorise access? I'm using cmake to compile on a
raspberry pi
On Fri, Oct 12, 2018 at 3:08 AM Soumik Ranjan Dasgupta <
srd1...@cse.jgec.ac.in> wrote:
> Although I've not used the C++ API, I've run into segmentation errors
> quite a lot during my initial days, and in most of the cases it generally
> stemmed from unauthorised directory accesses. Check whether the directory
> where the images are stored is readable and writable by you. Hope this
> helps!
>
> On Thu, Oct 11, 2018 at 4:09 PM Adam Richards <ajrichard...@gmail.com>
> wrote:
>
>> Hi I am having issues with sending a Mat image the I have opened through
>> OpenCV to Tesseract using the "SetImage" function.
>> I can use Tesseract on the image when I just input the commented out bit
>> at the end of the line as: SetImage(image);
>>
>> however when I run it as below the program will crash before even
>> reaching this point and return to console "segmentation error"
>>
>> I have found this code as being identical to somebody who previously did
>> my project, and i have no idea why this error is occurring.
>>
>>
>> Please if somebody can help me or provide a working example of Tesseract
>> using Mats from OpenCv I would greatly appreciate it.
>>
>> kind regards,
>>
>> Adam
>>
>>
>> int main(int argc, char** argv )
>> {
>>
>> imgOriginal = imread(argv[1],1); // open image
>> Mat img = imgOriginal;
>>
>> .........
>>
>> namedWindow("img", WINDOW_NORMAL);
>> imshow("img", img);
>> waitKey(0); // hold window open until user presses a key
>>
>> char *outText;
>> tesseract::TessBaseAPI *api = new tesseract::TessBaseAPI();
>> // Initialize tesseract-ocr with English, without specifying tessdata
>> path
>> if (api->Init("/usr/share/tesseract-ocr", "eng")) {
>> fprintf(stderr, "Could not initialize tesseract.\n");
>> exit(1);
>> }
>>
>> // Open input image with leptonica library
>> Pix *image =
>> pixRead("/home/pi/opencv/sudoku_capture/sudoku2/Sudoku.jpg");
>> api->TesseractRect( img.data, 1, img.step1(), 0, 0, img.cols,
>> img.rows);
>> api->SetImage((uchar*)img.data, img.size().width, img.size().height,
>> img.channels(), img.step1()); //image);
>> api->Recognize(0);
>>
>> // Get OCR result
>> outText = api->GetUTF8Text();
>> printf("OCR output:\n%s", outText);
>>
>> // Destroy used object and release memory
>> api->End();
>> delete [] outText;
>> //pixDestroy(&image);
>>
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>
>
> --
> Regards,
> Soumik Ranjan Dasgupta
>
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