QR Image

提供一下代码

import numpy as np
from PIL import Image

QR_path = "QRcode.png"
img_path = "img.jpg"

CropPos = (305, 340)
Transparency = 0.6

QR = np.array(Image.open(QR_path).convert('L'))
QR = QR / 255.0
QR[QR < 0.5] = 0
QR[QR >= 0.5] = 1
img = np.array(Image.open(img_path))
img = img / 255.0

out = np.zeros((img.shape[0], img.shape[1], 4), dtype=np.float64)
for i in range(img.shape[0]):
    for j in range(img.shape[1]):
        out[i, j] = [img[i, j, 0], img[i, j, 1], img[i, j, 2], 1.0]
cnt = 0
for i in range(QR.shape[0]):
    for j in range(QR.shape[1]):
        px, py = CropPos[0] + i, CropPos[1] + j
        if QR[i, j] == 0:
            value = (out[px, py] - 1.0 + Transparency) / Transparency
            value[3] = Transparency
            if np.any(value < 0):
                cnt += 1
            value[value < 0] = 0
            out[px, py] = value

if cnt > 0:
    print("Warning: {} pixels are too dark!".format(cnt))
out = (out * 255).astype(np.uint8)
out = Image.fromarray(out)
out.save('out.png')