static CellBoxes DetectCellBoxes(int lineDistance, ref CellLines horizontals, ref CellLines verticals)
        {
            CellBoxes cellBoxes = new CellBoxes();

            CellLines horizontalsFinal, verticalsFinal;
            CellLine  left = new CellLine();
            CellLine  right = new CellLine();
            CellLine  top, bottom;
            bool      findLeft, findRight;
            int       index = 0;

            Dictionary <int, int> duplicateDic = new Dictionary <int, int>();

            // 위에서부터 아래로 찾는다.
            foreach (CellLine horizontal in horizontals)
            {
                if (!duplicateDic.ContainsKey(horizontal.Index))
                {
                    findLeft = findRight = false;

                    foreach (CellLine vertical in verticals)
                    {
                        if (!duplicateDic.ContainsKey(vertical.Index))
                        {
                            if (horizontal.MinX <= vertical.MaxX && horizontal.MaxX >= vertical.MinX && horizontal.MinY <= vertical.MaxY && horizontal.MaxY >= vertical.MinY)
                            {
                                // 현재 라인의 왼쪽과 같은 위치에서 시작되는 수직 라인을 찾는다.
                                if (Math.Abs(horizontal.StartX - vertical.StartX) <= lineDistance)
                                {
                                    findLeft = true;
                                    left     = vertical;
                                }
                                // 현재 라인의 오른쪽과 같은 위치에서 시작되는 수직 라인을 찾는다.
                                else if (Math.Abs(horizontal.EndX - vertical.StartX) <= lineDistance)
                                {
                                    findRight = true;
                                    right     = vertical;
                                }
                            }

                            // 두 라인을 찾으면
                            if (findLeft && findRight)
                            {
                                // 두 라인을 이용해서 두 수직 라인의 하단과 이어지는 수평 라인을 찾는다.
                                if (ExistBottomLine(topIndex: horizontal.Index, lineDistance: lineDistance, verticalLeft: left, verticalRight: right, horizontals: horizontals, duplicateDic: ref duplicateDic, bottom: out bottom))
                                {
                                    top = horizontal;

                                    duplicateDic.Add(top.Index, top.Index);
                                    duplicateDic.Add(bottom.Index, bottom.Index);
                                    duplicateDic.Add(left.Index, left.Index);
                                    duplicateDic.Add(right.Index, right.Index);

                                    horizontals = GetHorizonsAllInBox(lineDistance: lineDistance, top: top, bottom: bottom, left: left, right: right, horizontals: horizontals, duplicateDic: ref duplicateDic);
                                    verticals   = GetVerticalAllInBox(lineDistance: lineDistance, top: top, bottom: bottom, left: left, right: right, verticals: verticals, duplicateDic: ref duplicateDic);

                                    RemoveNoiseLine(lineDistance: lineDistance, top: top, bottom: bottom, left: left, right: right, innerHorizontals: horizontals, innerVerticals: verticals, duplicateDic: ref duplicateDic, horizontalsFinal: out horizontalsFinal, verticalsFinal: out verticalsFinal);

                                    cellBoxes.Add(new CellBox(index: index++, horizontals: new CellLines(horizontalsFinal.OrderBy(line => line.StartY)), verticals: new CellLines(verticalsFinal.OrderBy(line => line.StartX))));
                                    break;
                                }
                            }
                        }
                    }
                }
            }

            return(cellBoxes);
        }