I block the Recognize but still get the same error. Other comments? On Apr 14, 5:23 am, Leonardo Gomes <[email protected]> wrote: > I'm a newbie with Tesseract, but I know that api.GetUTF8Text() calls > Recognize for you. Try removing the call to Recognize to see what happens. > > Cheers, > Leo. > > > > > > > > On Thu, Apr 14, 2011 at 7:58 AM, zl2k <[email protected]> wrote: > > hi, all > > > I have composed a Pix image and here are the 4 lines of code to > > recognize the input image (I am using tesseract 3.00) > > > tesseract::TessBaseAPI api; > > // construct pix_image > > api.SetImage(pix_image); > > api.SetRectangle(0, 0, pixGetWidth(pix_image), > > pixGetHeight(pix_image)); > > api.Recognize(NULL); > > std::string result = api.GetUTF8Text(); > > > The code compiles fine but got the following runtime error: > > Please call SetImage before attempting recognition.Please call > > SetImage before attempting recognition.terminate called after throwing > > an instance of 'std::logic_error' > > what(): basic_string::_S_construct NULL not valid > > Aborted > > > Could you give me some hint on how to fix the problem? Thanks for > > help. > > > zl2k > > > -- > > You received this message because you are subscribed to the Google Groups > > "tesseract-ocr" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > >http://groups.google.com/group/tesseract-ocr?hl=en.
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