Next step, image cell board
This step will split each cell of sudoku (9x9 = 81 cell), after that find contours of number, resize it and push to board.
Next step, recognize number convert to digit array 9x9 using opencv machine learning SVM. https://docs.opencv.org/3.4/d1/d73/tutorial_introduction_to_svm.html
I have to make training data for myself. So that it’s just enough in some case.
Find sudoku solution
Final step: draw to image