Remove number under barcode and write text in python 3

Question

I was trying to generate some bar-code (using python-barcode) with product info I successfully generate bar-code but Not to remove under code and write my own text

My code:

import barcode
from barcode.writer import ImageWriter

barCode = "00000016901011900000"
barCodeImage = barcode.get('Code128', barCode, writer=ImageWriter())
barCodeImage.save("one")

Which gives me this barcode

But I want to remove that showing number under the bar-code and write some text (as product info or name)

Asked By: Antu

||

Source

Answer 1

Here’s a method using OpenCV

Convert image to grayscale
Otsu’s threshold to obtain binary image
Dilate to connect contour
Find contours and filter using contour area
Replace ROI with desired text

After converting to grayscale, we Otsu’s threshold to get a binary image

Now we dilate to connect the contours

From here we find contours and sort using contour area. The smaller contour will be the ROI of the number. Here’s the detected number ROI

Now we “erase” the number by coloring in the ROI with white and write our desired text with cv2.putText(). Here’s the result

import cv2

image = cv2.imread('1.png')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
thresh = cv2.threshold(gray,0,255,cv2.THRESH_OTSU + cv2.THRESH_BINARY_INV)[1]
kernel = cv2.getStructuringElement(cv2.MORPH_RECT, (5,5))
dilate = cv2.dilate(thresh, kernel, iterations=3)

cnts = cv2.findContours(dilate, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
cnts = cnts[0] if len(cnts) == 2 else cnts[1]
cnts = sorted(cnts, key=cv2.contourArea)

for c in cnts:
    x,y,w,h = cv2.boundingRect(c)
    image[y:y+h, x:x+w] = [255,255,255]
    cv2.putText(image, 'Super Spicy Example Text', (x,y), 
                cv2.FONT_HERSHEY_SIMPLEX, .6, (0,0,0), 1)
    break

cv2.imshow('thresh', thresh)
cv2.imshow('dilate', dilate)
cv2.imshow('image', image)
cv2.waitKey(0)

Answered By: nathancy

Answer 2

Use this:

barCodeImage.save("one", text="Put your text here")

You can also use this with the writer:

barCodeImage.write(buffer, text="Put your text here")

Source: https://github.com/WhyNotHugo/python-barcode/blob/722d45eb3f3fe01da23155ddb0856ee0916cddf4/barcode/base.py#L56

Answered By: Trey Jenkins

Remove number under barcode and write text in python 3

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