批量自动识别图片中的二维码并裁剪出来

ljkund

我是一个小白，使用chatgpt+星火大模型+人工修改拼出来的代码，功能是选择一个文件夹，自动识别文件夹内所有图片是否包含二维码（白色的二维码识别不了）,识别后自动裁剪掉其他部分，保存到目录下output文件夹。
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123云盘：https://www.123pan.com/s/75pfjv-VAffv.html



因为最近要收集大量的二维码和处理，所以开发了这个，打包exe之后多了很多运行库，有能力的可以优化一下体积，理论上可以给白色的二维码进行反色之后再裁剪是没问题的，但我遇到了很多报错就没做了，抱歉，代码如下：

[Python] 纯文本查看 复制代码

import cv2
import numpy as np
import os
import uuid
from tkinter import filedialog
from tkinter import Tk

def crop_qr_code(image_path, output_dir):
    # Load the image using OpenCV
    image = cv2.imdecode(np.fromfile(image_path, dtype=np.uint8), -1)

    # Convert the image to grayscale
    gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

    # Use OpenCV's method to find QR code aligners
    detector = cv2.QRCodeDetector()
    retval, points = detector.detect(gray)

    if points is not None:
        # Find the top-left and bottom-right points of the QR code
        points = points[0]
        top_left = np.min(points, axis=0)
        bottom_right = np.max(points, axis=0)

        # Crop the region containing the QR code
        qr_code = image[int(top_left[1]):int(bottom_right[1]), int(top_left[0]):int(bottom_right[0])]

        # Generate a random filename
        source_filename = os.path.basename(image_path)
        output_filebasename, _ = os.path.splitext(source_filename)
        output_filename = output_filebasename + ".jpg"
        output_path = os.path.join(output_dir, output_filename)

        # Save the cropped image
        cv2.imencode('.jpg', qr_code)[1].tofile(output_path)
        print(f"QR code cropped and saved to {output_path}")
    else:
        print(f"No QR code detected in {image_path}.")

def crop_qr_codes_in_directory(input_dir, output_dir):
    # Check if output directory exists, if not create it
    if not os.path.exists(output_dir):
        os.makedirs(output_dir)

    # Process each file in the directory
    for filename in os.listdir(input_dir):
        if filename.lower().endswith(('.png', '.jpg', '.jpeg', '.bmp', '.gif', '.tiff')):
            image_path = os.path.join(input_dir, filename)
            crop_qr_code(image_path, output_dir)

# Set your input directory and output directory here
root = Tk()
root.withdraw()
input_directory = filedialog.askdirectory()
output_directory = os.path.join(input_directory, 'output')

# Crop QR codes for all images in the input directory
crop_qr_codes_in_directory(input_directory, output_directory)

下面是针对白色二维码的代码，可以自动识别文件夹中所有没有二维码的图片（白色的）然后进行反色处理

[Python] 纯文本查看 复制代码

import os
import cv2
import numpy as np
import pyzbar.pyzbar as pyzbar

def is_qrcode(image):
    # 对大图像进行缩放
    height, width = image.shape[:2]
    if height * width > 1000 * 1000:  # 例如，对于超过 1000x1000 像素的图像
        image = cv2.resize(image, (width // 2, height // 2))
    
    # 可选的图像预处理
    gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
    _, thresholded = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY | cv2.THRESH_OTSU)

    decoded_objects = pyzbar.decode(thresholded)
    return len(decoded_objects) > 0

def invert_colors(image):
    return cv2.bitwise_not(image)

def process_images():
    for file in os.listdir('.'):
        if file.lower().endswith(('.jpg', '.jpeg', '.png')):
            file_path = os.path.join('.', file)
            file_path_encoded = file_path.encode('utf-8')
            image = cv2.imdecode(np.fromfile(file_path_encoded, dtype=np.uint8), cv2.IMREAD_UNCHANGED)

            if image is not None and not is_qrcode(image):
                inverted_image = invert_colors(image)
                _, buf = cv2.imencode(os.path.splitext(file)[1], inverted_image)
                buf.tofile(file)

if __name__ == '__main__':
    process_images()

Myh3553

深奥  不知道能不能操作

gogo2023

这个可以有.我正好想要个根据二维码改文件名的

寻娘子

还要内置pgt吗？二维码不是有三个“回”形标志吗，用这个应该快点

wushaopei

继续开发一下呀楼主，好多场景需要这个