remove watermark from document

Asked Dec 20 '21 at 17:59

Active Dec 21 '21 at 12:48

Viewed 378 times

import cv2

def convert_black_white(path):
    img = cv2.imread(path)
    # Rescaling
    # img = cv2.resize(img, None, fx=0.5, fy=0.5, interpolation=cv2.INTER_AREA)

    grayImage = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    
    (thresh, blackAndWhiteImage) = cv2.threshold(grayImage, 128, 155, cv2.THRESH_BINARY)

    cv2.imwrite(path, grayImage)
    cv2.imwrite('/tmp/' + 'changed4.jpg', grayImage)

    cv2.imshow("Gray image", grayImage)

    cv2.waitKey(0)
    cv2.destroyAllWindows()

convert_black_white("test.jpg")

enter image description here

This is my code and I attach input. What I want to do is to remove the SAMPLE background and only get the text with it. Does anyone have any idea?

edited Dec 21 '21 at 12:48

Wang Liang

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asked Dec 20 '21 at 17:59

lion

Do you have the original as PDF or only this picture of it? – Oliver Tale-Yazdi Dec 20 '21 at 20:53
Do you have the input image available at a higher resolution? – stateMachine Dec 20 '21 at 23:14
A similar question was asked here: https://stackoverflow.com/questions/32125281/removing-watermark-out-of-an-image-using-opencv This should work in your case as well! – Sarvesh Thakur Dec 22 '21 at 21:00

remove watermark from document

0 Answers0