code: def horizontal_projection(img):
      projected = []
      rows, cols = img.shape
      for i in range(rows):
          proj_sum = 0
          for j in range(cols):
              proj_sum += img[i][j] == 1
          projected.append([1] * proj_sum + [0] * (cols - proj_sum))
          if proj_sum <= 0.1 * cols:
              return i
      return 0
  
file_path: Mozart/src/staff.py
imports: from rle import *
  from commonfunctions import *
  from collections import Counter
label_desc: Use image node_id 6 for calling a global function with example usage: horizontal_projection(img) and returns: int, i