Traceback (most recent call last): File "G:\jp\Scan\scan.py", line 98, in <module> cnts = sorted(cnts, key=cv2.contourArea, reverse=True)[:5] cv2.error: OpenCV(4.7.0) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\shapedescr.cpp:315: error: (-215:Assertion failed) npoints >= 0 && (depth == CV_32F || depth == CV_32S) in function 'cv::contourArea'

这个错误通常是由于轮廓的点数小于0或深度不是CV_32F或CV_32S引起的。

请检查您的代码中是否有对轮廓进行处理的语句，特别是与轮廓的点数和深度相关的语句。确保它们没有错误。

您可以使用以下代码检查轮廓的点数和深度：

print(cv2.contourArea(cnt))
print(cnt.dtype)

如果您的轮廓的点数小于0或深度不是CV_32F或CV_32S，您可以尝试更改或修复您的代码来解决这个问题。

相关问题

Traceback (most recent call last): File "C:/Python38/pythonProject/poi.py", line 60, in <module> jsonf = urllib.urlopen(url) Traceback (most recent call last): File "C:/Python38/pythonProject/poi.py", line 60, in <module> jsonf = urllib.urlopen(url) AttributeError: module 'urllib' has no attribute 'urlopen'

您遇到的错误是因为urllib模块中没有urlopen这个属性。Python 3中urllib模块被分为了urllib.request、urllib.parse、urllib.error等子模块。

要解决这个问题，您可以将代码中的urllib替换为urllib.request。请尝试以下修改：

import urllib.request

url = "your_url_here"
jsonf = urllib.request.urlopen(url)

这样应该可以解决您的问题。如果还有其他问题，请随时提问。

Traceback (most recent call last): File "paddle\fluid\ir.py", line 24, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\fluid\proto\pass_desc_pb2.py", line 16, in <module> ModuleNotFoundError: No module named 'framework_pb2' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "main.py", line 1, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "index.py", line 7, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "leis\jietuwj.py", line 8, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddleocr\__init__.py", line 14, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddleocr\paddleocr.py", line 21, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\__init__.py", line 62, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\__init__.py", line 15, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\spawn.py", line 24, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\utils\launch_utils.py", line 27, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\fleet\__init__.py", line 31, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\distributed\fleet\fleet.py", line 33, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\fluid\ir.py", line 28, in <module> File "PyInstaller\loader\pyimod02_importers.py", line 352, in exec_module File "paddle\fluid\proto\pass_desc_pb2.py", line 16, in <module> ModuleNotFoundError: No module named 'framework_pb2' [15508] Failed to execute script 'main' due to unhandled exception!

这是一个 Python 的错误，看起来是在使用 PaddlePaddle 框架时出现了问题。可能是因为缺少某个依赖项或环境配置不正确导致的。你可以尝试更新 PaddlePaddle 和相关的依赖项，或者检查你的环境配置是否正确。如果问题仍然存在，请查看错误信息中的文件和行号，以便更好地定位和解决问题。