You can add a "typedef unsigned char BYTE;" in the digitrecognizer.cpp and remove #include <tchar.h> from stdafx.h

You can also add a custom bash make script

!/bin/bash

OpenCVStuff="pkg-config --cflags opencv pkg-config --libs opencv"
Optimizations="-O3 -fexpensive-optimizations"
CPU="-mfpmath=sse -mtune=core2 -msse -msse2 -msse3"
g++ $OpenCVStuff $Optimizations $CPU digitrecognizer.cpp stdafx.cpp "Sudoku Solver.cpp" -o sudoku_detector
exit 0

Running it the program is compiled without problems without visual studio provided the opencv libraries are installed ( sudo apt-get install libcv-dev )

Keep up the good work :)

Hello,

I am trying to get this program to run with Visual Studio 2010 and OpenCV 2.4. Everything seems to work, however once I reach this bit of code (starting on line 440 in Sudoku Solver.cpp), the for loops do not seem to terminate near the end of this cpp file. I put some debug statements in the loops, and it seems like the first loop doesn't even get to the second iteration (j = 0), and the second loop only gets to its third iteration (i = 2) and it seems to be quitting around the third iteration of the second for loop. It seems like it is not reaching the first part of the if statement here below, however the program just stops and pauses at some point. I have commented out all of the wait key stuff within these nested for loops. Do you have any advice for what I can do to get this working? Thanks.

  if(area > currentCell.rows*currentCell.cols/5)
        {
            int number = dr->classify(currentCell);
            printf("Classified as: %d\n", number);

            printf("Shown\n");
            printf("%d ", number);
            /*imshow("test", currentCell);
            waitKey(0);*/
        }
        else
        {
            printf("  ");
        }

Hi

I tried to implement the digitrecognizer and i have some issues getting it correct with the Visual Studio 2019. The knn Train -> gets an error that i don't know how to correct. Furthermore, when it comes to the preprocessImage i get some issues aswell. I am not the best programmer to be honest so can someone help me out here? Thank you very much