Pyzbar无法解码同打印机打印的单张QR Code，求技术解决方案

用同一台标签打印机打印了一批QR Code标签，其余均能正常识别，唯独这一张无法解码。已尝试Stack Overflow上《Preprocessing images for QR detection in python》中的所有解决方案，仍未解决，附上相关代码及QR Code图片，恳请帮助。

import cv2
import numpy as np
from pyzbar.pyzbar import decode
from pyzbar.pyzbar import ZBarSymbol
from kraken import binarization
from PIL import Image
from qreader import QReader

image_path = r"C:\Users\ASinger\Pictures\hdi_pdfs\page1.png"

# 方法1
im = cv2.imread(image_path, cv2.IMREAD_GRAYSCALE)
ret, bw_im = cv2.threshold(im, 127, 255, cv2.THRESH_BINARY)
barcodes = decode(bw_im, symbols=[ZBarSymbol.QRCODE])
print(f'barcodes: {barcodes}')

# 方法2
im = Image.open(image_path)
bw_im = binarization.nlbin(im)
decoded = decode(bw_im, symbols=[ZBarSymbol.QRCODE])
print(f'decoded: {decoded}')

# 方法3
im = cv2.imread(image_path, cv2.IMREAD_GRAYSCALE)
blur = cv2.GaussianBlur(im, (5, 5), 0)
ret, bw_im = cv2.threshold(blur, 0, 255, cv2.THRESH_BINARY+cv2.THRESH_OTSU)
decoded = decode(bw_im, symbols=[ZBarSymbol.QRCODE])
print(f'decoded: {decoded}')

# 方法4
qreader = QReader()
image = cv2.imread(image_path)
decoded_text = qreader.detect_and_decode(image=image)
print(f'decoded_text: {decoded_text}')

# 方法5
cropped_image = image_path
im2 = Image.open(cropped_image)
im2 = im2.resize((2800, 2800))
im2.save(cropped_image, quality=500)
im2.show()
im3 = cv2.imread(cropped_image, cv2.IMREAD_GRAYSCALE)
ret, bw_im = cv2.threshold(im3, 127, 255, cv2.THRESH_BINARY)
decoded = decode(bw_im, symbols=[ZBarSymbol.QRCODE])
print(f'decoded: {decoded}')

内容的提问来源于stack exchange，提问作者Andrew Singer