图片到文字python

Question

我正在使用python 3.x并使用以下代码将图像转换为文本：

from PIL import Image
from pytesseract import image_to_string

image = Image.open('image.png', mode='r')
print(image_to_string(image))

我收到以下错误：

Traceback (most recent call last):
  File "C:/Users/hp/Desktop/GII/Image_to_text.py", line 12, in <module>
    print(image_to_string(image))
  File "C:\Users\hp\Downloads\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\lib\site-packages\pytesseract\pytesseract.py", line 161, in image_to_string
    config=config)
  File "C:\Users\hp\Downloads\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\lib\site-packages\pytesseract\pytesseract.py", line 94, in run_tesseract
    stderr=subprocess.PIPE)
  File "C:\Users\hp\Downloads\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\lib\subprocess.py", line 950, in __init__
    restore_signals, start_new_session)
  File "C:\Users\hp\Downloads\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\lib\subprocess.py", line 1220, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

请注意，我已将图像放在存在python的同一目录中。也不会引发错误，image = Image.open('image.png', mode='r')但会引发错误 print(image_to_string(image))。

知道这里可能有什么问题吗？谢谢

Answer 1

您必须已经tesseract安装并且可以访问。

据消息人士称，pytesseract这仅仅是将subprocess.Popentesseract二进制作为运行二进制文件的包装。它本身不执行任何类型的OCR。

相关资料来源：

def run_tesseract(input_filename, output_filename_base, lang=None, boxes=False, config=None):
    '''
    runs the command:
        `tesseract_cmd` `input_filename` `output_filename_base`

    returns the exit status of tesseract, as well as tesseract's stderr output
    '''
    command = [tesseract_cmd, input_filename, output_filename_base]

    if lang is not None:
        command += ['-l', lang]

    if boxes:
        command += ['batch.nochop', 'makebox']

    if config:
        command += shlex.split(config)

    proc = subprocess.Popen(command,
            stderr=subprocess.PIPE)
    return (proc.wait(), proc.stderr.read())

引用另一部分来源：

# CHANGE THIS IF TESSERACT IS NOT IN YOUR PATH, OR IS NAMED DIFFERENTLY
tesseract_cmd = 'tesseract'

因此，更改tesseract路径的快速方法是：

import pytesseract
pytesseract.tesseract_cmd = "/absolute/path/to/tesseract"  # this should be done only once 
pytesseract.image_to_string(img)