使用Tesseract OCR与pytesseract时遇[WinError 5]权限拒绝错误求助

问题核心 #

你的代码里犯了一个关键错误：pytesseract.pytesseract.tesseract_cmd被设置成了文件夹路径，但这个参数必须指向tesseract.exe可执行文件的完整路径。系统尝试执行一个文件夹，自然会返回访问被拒绝的错误。

解决方案 #

1. 定位tesseract.exe文件
   找到你安装/解压的Tesseract文件夹，里面肯定有一个tesseract.exe文件。比如：

   • 官方安装版默认路径：C:\Program Files\Tesseract-OCR\tesseract.exe
   • 你放在桌面的解压版：C:\Users\ccher\OneDrive\Desktop\Tesseract-OCR\tesseract.exe（假设你的Tesseract文件夹叫Tesseract-OCR）

2. 修正代码中的路径
   修改tesseract_cmd的赋值，指向exe文件：

   import pytesseract, PIL.Image as Image, cv2, matplotlib.pyplot as plt, json, colorama, pyautogui as pg, os
   
   colorama.init(autoreset=True)
   
   # 修正为tesseract.exe的完整路径
   pytesseract.pytesseract.tesseract_cmd = r"C:\\Users\\ccher\\OneDrive\\Desktop\\Tesseract-OCR\\tesseract.exe"                                                                        
   
   print(colorama.Fore.LIGHTGREEN_EX + 'Program Started')
   
   screenshot = Image.open('screenshot.png')
   found_text: str = pytesseract.image_to_string(screenshot)
   

3. 额外建议

   • 尽量把Tesseract移到非同步目录（比如C:\Program Files），OneDrive的同步机制可能导致权限或文件锁定问题。
   • 检查tesseract.exe所在文件夹的权限：右键文件夹→属性→安全→确保当前用户拥有「读取和执行」权限，没有的话添加该权限。

你的原始代码 #

import pytesseract, PIL.Image as Image, cv2, matplotlib.pyplot as plt, json, colorama, pyautogui as pg, os

colorama.init(autoreset=True)

# Setting up the tesseract OCR path
pytesseract.pytesseract.tesseract_cmd = r"C:\\Users\\ccher\\OneDrive\\Desktop"                                                                        

print(colorama.Fore.LIGHTGREEN_EX + 'Program Started')

screenshot = Image.open('screenshot.png')
found_text: str = pytesseract.image_to_string(screenshot)

完整错误信息 #

Traceback (most recent call last):
  File "C:\Users\ccher\OneDrive\Desktop\Bloxflip Data Collection\main.py", line 22, in <module>
    found_text: str = pytesseract.image_to_string(screenshot)
  File "C:\Users\ccher\AppData\Local\Programs\Python\Python310\lib\site-packages\pytesseract\pytesseract.py", line 423, in image_to_string
    return {
  File "C:\Users\ccher\AppData\Local\Programs\Python\Python310\lib\site-packages\pytesseract\pytesseract.py", line 426, in <lambda>
    Output.STRING: lambda: run_and_get_output(*args),
  File "C:\Users\ccher\AppData\Local\Programs\Python\Python310\lib\site-packages\pytesseract\pytesseract.py", line 288, in run_and_get_output
    run_tesseract(**kwargs)
  File "C:\Users\ccher\AppData\Local\Programs\Python\Python310\lib\site-packages\pytesseract\pytesseract.py", line 255, in run_tesseract
    proc = subprocess.Popen(cmd_args, **subprocess_args())
  File "C:\Users\ccher\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 966, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "C:\Users\ccher\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1435, in _execute_child
    hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
PermissionError: [WinError 5] Access is denied

内容的提问来源于stack exchange，提问作者Shampooser Conditioner