After using the detectTextSWT function, the program crashes

berak · November 23, 2021, 9:38am

outTextRegions is empty here:

opencv/opencv_contrib/blob/4.x/modules/text/src/text_detector_swt.cpp#L850


      
          
          SWTFirstPass (canny_edge_image, gradientX, gradientY, dark_on_light, SWTImage, rays );
          
          SWTSecondPass ( SWTImage, rays );
          
          Mat normalised_image(input.size(), CV_8UC1);
          normalizeAndScale(SWTImage, normalised_image);
          
          // Calculate legally connected components from SWT and gradient image.
          // return type is a vector of vectors, where each outer vector is a component and
          // the inner vector contains the (y,x) of each pixel in that component.
          std::vector<std::vector<SWTPoint> > components = getComponents(SWTImage);
          std::vector<Component> validComponents = filterComponents(SWTImage, components, false);
          
          vector<cv::Rect> outTextRegions;
          
          result = findValidChains(input, SWTImage, validComponents, draw, outTextRegions);
          
          if (chainBBs.needed()) {
               _InputArray(outTextRegions).copyTo(chainBBs);
          }

i think it must be checked (bug)

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After using the detectTextSWT function, the program crashes

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