使用OpenCV

Question

我想从图像中删除垂直和水平线 那么这是我的方法

def removeLines(self):
    # Convert to THRESH_BINARY
    self.retval, self.im = cv2.threshold(self.im, 128, 255, cv2.THRESH_BINARY | cv2.THRESH_OTSU)

    chop = 6  #  If line length is more than chop . It will set to white
    threshold = 200 #  pixel's color
    lineColor = 150  #  if is line. set color 255:white   0:black
    (height, width) = self.im.shape
    #  loop each pixel
    for i in xrange(height):
        for j in xrange(width):
            #  if is black point
            if self.im[i][j] < threshold:
                countWidth = 0
                #  remove vertical line    if <threshold then  count+1
                for c in range(j, width):
                    if self.im[i][c] < threshold:
                        countWidth += 1
                    else:
                        break
                #  if length is more than chop.  then remove line
                if countWidth >= chop:
                    for c in range(countWidth):
                        try:
                            #  check this pixel's around pixel
                            if self.im[i+1, j+c] > threshold and self.im[i-1, j+c] > threshold:
                                self.im[i, j+c] = lineColor
                        except IndexError:
                            pass

                j += countWidth

删除水平线与删除垂直线相同

这是我的结果。
我首先将图像转换为黑白（黄色背景和紫色数字）
然后将所有线条绘制成灰色（matplotlib中的青色）

如果两条线重叠，则此方法无法检测 如果一行是数字，则会错误地删除该行 如何改进此算法