code: def segment(self):
      self.line_indices = get_line_indices(histogram(self.bin_img, 0.8))
      if len(self.line_indices) < 10:
          self.regions_without_staff = [
              np.copy(self.open_region(self.no_staff_img))
          ]
          self.regions_with_staff = [np.copy(self.bin_img)]
          return
  
      generated_lines_img = np.copy(self.no_staff_img)
      lines = []
      for index in self.line_indices:
          line = ((0, index), (self.bin_img.shape[1] - 1, index))
          lines.append(line)
  
      end_of_staff = []
      for index, line in enumerate(lines):
          if index > 0 and (
              line[0][1] - end_of_staff[-1][1] < 4 * self.spacing
          ):
              pass
          else:
              p1, p2 = line
              x0, y0 = p1
              x1, y1 = p2
              end_of_staff.append((x0, y0, x1, y1))
  
      box_centers = []
      spacing_between_staff_blocks = []
      for i in range(len(end_of_staff) - 1):
          spacing_between_staff_blocks.append(
              end_of_staff[i + 1][1] - end_of_staff[i][1]
          )
          if i % 2 == 0:
              offset = (
                  end_of_staff[i + 1][1] - end_of_staff[i][1]
              ) // 2
              center = end_of_staff[i][1] + offset
              box_centers.append((center, offset))
  
      max_staff_dist = np.max(spacing_between_staff_blocks)
      max_margin = max_staff_dist // 2
      margin = max_staff_dist // 10
  
      end_points = []
      regions_without_staff = []
      regions_with_staff = []
      for index, (center, offset) in enumerate(box_centers):
          y0 = int(center) - max_margin - offset + margin
          y1 = int(center) + max_margin + offset - margin
          end_points.append((y0, y1))
  
          region = self.bin_img[y0:y1, 0 : self.bin_img.shape[1]]
          regions_with_staff.append(region)
          staff_block = self.no_staff_img[
              y0:y1, 0 : self.no_staff_img.shape[1]
          ]
  
          regions_without_staff.append(self.open_region(staff_block))
  
      self.regions_without_staff = regions_without_staff
      self.regions_with_staff = regions_with_staff
  
imports: from rle import *
  from commonfunctions import *
  from staff import calculate_thickness_spacing, remove_staff_lines
label_desc: Use image node_id 3 for calling the Segmenter obj's underlying member method code with example usage: obj.segment() without return types