Issue
I am working on one project Data extraction from invoices using computer vision in this i am trying to extract data from image invoice using opencv and pytesseract and further i am using Regex
for segregate that raw data into different parts like Date, Vendor name, Invoice number, item name and item quantity.at start i am trying to extract Date but stuck with error.
here is my code
import pytesseract
from pytesseract import Output
import cv2
img = cv2.imread('invoice.png')
d = pytesseract.image_to_data(img, output_type=Output.DICT)
n_boxes = len(d['level'])
for i in range(n_boxes):
(x, y, w, h) = (d['left'][i], d['top'][i], d['width'][i], d['height'][i])
img = cv2.rectangle(img, (x, y), (x + w, y + h), (0, 0, 255), 2)
cv2.imshow(img,'img')
but i get this error
File "testpdf3.py", line 12, in <module>
cv2.imshow(img,'img')
SystemError: <built-in function imshow> returned NULL without setting an error
Solution
The syntax of cv2.imshow()
is
cv2.imshow("windowname", image)
.
In the program, line 12 should be cv2.imshow('img', img)
.
Answered By - Vaishnavi Piyush
0 comments:
Post a Comment
Note: Only a member of this blog may post a comment.