opencv 二维码

OpenCV提供了QRCodeDetector类来实现二维码的检测和解析。可以使用detectAndDecode方法来同时进行二维码的检测和解析。以下是一个示例代码：

import cv2 as cv
import numpy as np

# 加载图片
src_image = cv.imread("/home/pi/Desktop/qrcode.png")

# 实例化QRCodeDetector
qrcoder = cv.QRCodeDetector()

# qr检测并解码
codeinfo, points, straight_qrcode = qrcoder.detectAndDecode(src_image)

# 绘制qr的检测结果
cv.drawContours(src_image, \[np.int32(points)\], 0, (0, 0, 255), 2)

# 打印解码结果
print("qrcode :", codeinfo)

cv.imshow("result", src_image)
cv.waitKey(0)

这段代码首先加载了一张图片，然后实例化了QRCodeDetector类。接下来使用detectAndDecode方法对图片进行二维码的检测和解析。最后，通过绘制检测结果和打印解码结果来展示二维码的信息。
#### 引用[.reference_title]
- *1* *3* [OpenCV（项目）二维码识别（二维码、条形码）](https://blog.csdn.net/great_yzl/article/details/119864505)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
- *2* [Opencv之二维码识别---QRCodeDetector](https://blog.csdn.net/u014072827/article/details/112270853)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^insertT0,239^v3^insert_chatgpt"}} ] [.reference_item]
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