import cv2
import numpy as np
import matplotlib.pyplot as plt

img = cv2.imread('/content/21.png')
gray=cv2.cvtColor(img,cv2.COLOR_BGR2GRAY)
linek = np.zeros((11,11),dtype=np.uint8)
linek[...,5]=1
x=cv2.morphologyEx(gray, cv2.MORPH_OPEN, linek ,iterations=800)
gray-=x
plt.imshow(gray)
cv2.imwrite('21_output.jpg', gray)

import cv2
import numpy as np
import matplotlib.pyplot as plt

#https://stackoverflow.com/questions/57961119/how-to-remove-all-the-detected-lines-from-the-original-image-using-python

image = cv2.imread('/content/17.png')
gray = cv2.cvtColor(image,cv2.COLOR_BGR2GRAY)
thresh = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)[1]

# Remove vertical
vertical_kernel = cv2.getStructuringElement(cv2.MORPH_RECT, (1,10))
detected_lines = cv2.morphologyEx(thresh, cv2.MORPH_OPEN, vertical_kernel, iterations=2)
cnts = cv2.findContours(detected_lines, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cnts = cnts[0] if len(cnts) == 2 else cnts[1]
for c in cnts:
    cv2.drawContours(image, [c], -1, (255,255,255), 2)

image = thresh - detected_lines
plt.imshow( image)

from paddleocr import PaddleOCR, draw_ocr

---------------------------------------------------------------------------
OSError                                   Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_16624/4181743072.py in 
----> 1 from paddleocr import PaddleOCR, draw_ocr

~\Anaconda3\envs\NUS_PY37\lib\site-packages\paddleocr\__init__.py in 
     13 # limitations under the License.
     14 import paddleocr
---> 15 from .paddleocr import *
     16 
     17 __version__ = paddleocr.VERSION

~\Anaconda3\envs\NUS_PY37\lib\site-packages\paddleocr\paddleocr.py in 
     24 from pathlib import Path
     25 
---> 26 from tools.infer import predict_system
     27 from ppocr.utils.logging import get_logger
     28 

~\Anaconda3\envs\NUS_PY37\lib\site-packages\paddleocr\tools\infer\predict_system.py in 
     29 from PIL import Image
     30 import tools.infer.utility as utility
---> 31 import tools.infer.predict_rec as predict_rec
     32 import tools.infer.predict_det as predict_det
     33 import tools.infer.predict_cls as predict_cls

~\Anaconda3\envs\NUS_PY37\lib\site-packages\paddleocr\tools\infer\predict_rec.py in 
     29 
     30 import tools.infer.utility as utility
---> 31 from ppocr.postprocess import build_post_process
     32 from ppocr.utils.logging import get_logger
     33 from ppocr.utils.utility import get_image_file_list, check_and_read_gif

~\Anaconda3\envs\NUS_PY37\lib\site-packages\paddleocr\ppocr\postprocess\__init__.py in 
     22 __all__ = ['build_post_process']
     23 
---> 24 from .db_postprocess import DBPostProcess, DistillationDBPostProcess
     25 from .east_postprocess import EASTPostProcess
     26 from .sast_postprocess import SASTPostProcess

~\Anaconda3\envs\NUS_PY37\lib\site-packages\paddleocr\ppocr\postprocess\db_postprocess.py in 
     20 import cv2
     21 import paddle
---> 22 from shapely.geometry import Polygon
     23 import pyclipper
     24 

~\Anaconda3\envs\NUS_PY37\lib\site-packages\shapely\geometry\__init__.py in 
      2 
      3 
----> 4 from .base import CAP_STYLE, JOIN_STYLE
      5 from .geo import box, shape, asShape, mapping
      6 from .point import Point, asPoint

~\Anaconda3\envs\NUS_PY37\lib\site-packages\shapely\geometry\base.py in 
     17 
     18 from shapely.affinity import affine_transform
---> 19 from shapely.coords import CoordinateSequence
     20 from shapely.errors import WKBReadingError, WKTReadingError
     21 from shapely.geos import WKBWriter, WKTWriter

~\Anaconda3\envs\NUS_PY37\lib\site-packages\shapely\coords.py in 
      6 from ctypes import byref, c_double, c_uint
      7 
----> 8 from shapely.geos import lgeos
      9 from shapely.topology import Validating
     10 

~\Anaconda3\envs\NUS_PY37\lib\site-packages\shapely\geos.py in 
    152     if os.getenv('CONDA_PREFIX', ''):
    153         # conda package.
--> 154         _lgeos = CDLL(os.path.join(sys.prefix, 'Library', 'bin', 'geos_c.dll'))
    155     else:
    156         try:

~\Anaconda3\envs\NUS_PY37\lib\ctypes\__init__.py in __init__(self, name, mode, handle, use_errno, use_last_error)
    362 
    363         if handle is None:
--> 364             self._handle = _dlopen(self._name, mode)
    365         else:
    366             self._handle = handle

OSError: [WinError 126] The specified module could not be found