2019/11/7

    int minX = std::numeric_limits<int>::max();
    int minY = std::numeric_limits<int>::max();
    int maxX = std::numeric_limits<int>::min();
    int maxY = std::numeric_limits<int>::min();

 

 

 

 

 

 

 

 if (found starting column && (black and white jump || (col == 0 && the white point)))

　　Trip start point of the column where the white columns =

       1 = starting column has been found;

if (starting column has been found && (black and white jump || (col == cols-1 && the white point)))

　　Stroke end point at which the column Column = white