图像到文本python
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/38507426/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Image to text python
提问by muazfaiz
I am using python 3.x and using the following code to convert image into text:
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))
I am getting the following error:
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
Please note that I have put the image in the same directory where my python is present. Also It does not raise error on image = Image.open('image.png', mode='r')but it raises on the line print(image_to_string(image)).
请注意，我已将图像放在我的 python 所在的同一目录中。此外，它不会引发错误， image = Image.open('image.png', mode='r')但会引发在线print(image_to_string(image))。
Any idea what might be wrong here? Thanks
知道这里可能有什么问题吗？谢谢
回答by ?ukasz Rogalski
You have to have tesseractinstalled and accesible in your path.
你必须tesseract在你的路径中安装和访问。
According to source, pytesseractis merely a wrapper for subprocess.Popenwith tesseract binary as a binary to run. It does not perform any kind of OCR itself.
根据 source，pytesseract它只是将subprocess.Popentesseract 二进制文件作为要运行的二进制文件的包装器。它本身不执行任何类型的 OCR。
Relevant part of sources:
相关部分来源：
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())
Quoting another part of source:
引用另一部分来源：
# CHANGE THIS IF TESSERACT IS NOT IN YOUR PATH, OR IS NAMED DIFFERENTLY
tesseract_cmd = 'tesseract'
So quick way of changing tesseract path would be:
改变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)
回答by AnkurJangra
You need to download tesseract OCR setup as well. Use this link to download the setup:http://digi.bib.uni-mannheim.de/tesseract/tesseract-ocr-setup-3.05.01.exe
您还需要下载 tesseract OCR 设置。使用此链接下载设置：http: //digi.bib.uni-mannheim.de/tesseract/tesseract-ocr-setup-3.05.01.exe
Then, include this line in your code to use tesseract executable: pytesseract.pytesseract.tesseract_cmd = 'C:\Program Files (x86)\Tesseract-OCR\tesseract'
然后，在您的代码中包含这一行以使用 tesseract 可执行文件：pytesseract.pytesseract.tesseract_cmd = 'C:\Program Files (x86)\Tesseract-OCR\tesseract'
This is the default location where tesseract will be installed.
这是安装 tesseract 的默认位置。
That's it. I have also followed these steps to run the code at my end.
就是这样。我也按照这些步骤在我的最后运行代码。
Hope this will help.
希望这会有所帮助。
回答by thrinadhn
Please install the Below packages for extracting text from images pnf/jpeg
请安装以下软件包以从图像 pnf/jpeg 中提取文本
pip install pytesseract
pip install Pillow
using python pytesseract OCR (Optical Character Recognition) is the process of electronically extracting text from images
使用python pytesseract OCR（Optical Character Recognition）是从图像中电子提取文本的过程
PIL is used anything from simply reading and writing image files to scientific image processing, geographical information systems, remote sensing, and more.
PIL 可用于从简单的读取和写入图像文件到科学图像处理、地理信息系统、遥感等等。
from PIL import Image
from pytesseract import image_to_string
print(image_to_string(Image.open('/home/ABCD/Downloads/imageABC.png'),lang='eng'))
回答by prabhakar267
You can try using this python library: https://github.com/prabhakar267/ocr-convert-image-to-text
您可以尝试使用这个 python 库：https: //github.com/prabhakar267/ocr-convert-image-to-text
As mentioned on the README of the package, usage is very straightforward.
正如包的 README 中提到的，使用非常简单。
usage: python main.py [-h] input_dir [output_dir]
positional arguments:
input_dir
output_dir
optional arguments:
-h, --help show this help message and exit
回答by stonebig
Your "current" directory is not where you think.
您的“当前”目录不是您所想的。
==> You may specify the full path to the image, for example: image = Image.open(r'C:\Users\hp\Downloads\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\image.png', mode='r')
==> 您可以指定图像的完整路径，例如： image = Image.open(r'C:\Users\hp\Downloads\WinPython-64bit-3.5.1.2\python-3.5.1.amd64\image .png', mode='r')
