我正在尝试在python中运行基本且非常简单的代码。
from PIL import Image
import pytesseract
im = Image.open("sample1.jpg")
text = pytesseract.image_to_string(im, lang = 'eng')
print(text)
看起来就是这样，我实际上已经通过安装程序为Windows安装了tesseract。我是Python的新手，不确定如何继续？
这里的任何指导将非常有帮助。我尝试重新启动Spyder应用程序，但无济于事。
Answers:
我看到步骤分散在不同的答案中。根据我最近在Windows上遇到的pytesseract错误的经验，依次编写不同的步骤可以更轻松地解决该错误：
1。使用Windows安装程序安装tesseract，网址为：https：//github.com/UB-Mannheim/tesseract/wiki
2。请注意安装中的tesseract路径。进行此编辑时的默认安装路径为：C:\Users\USER\AppData\Local\Tesseract-OCR。它可能会更改，因此请检查安装路径。
3。pip install pytesseract
4。在调用之前，在脚本中设置tesseract路径image_to_string：
pytesseract.pytesseract.tesseract_cmd = r'C:\Users\USER\AppData\Local\Tesseract-OCR\tesseract.exe'
sudo apt-get update
sudo apt-get install libleptonica-dev
sudo apt-get install tesseract-ocr tesseract-ocr-dev
sudo apt-get install libtesseract-dev
brew install tesseract
从https://github.com/UB-Mannheim/tesseract/wiki下载二进制文件。然后添加pytesseract.pytesseract.tesseract_cmd = 'C:\Program Files (x86)\Tesseract-OCR\tesseract.exe'到您的脚本中。
pip install tesseract
pip install tesseract-ocr
参考：https : //pypi.org/project/pytesseract/（安装部分）和 https://github.com/tesseract-ocr/tesseract/wiki#installation
1-您需要在计算机上安装Tesseract OCR。
从这里得到它。 https://github.com/UB-Mannheim/tesseract/wiki
下载合适的版本。
2-将Tesseract路径添加到您的系统环境。即编辑系统变量。
3-运行pip install pytesseract和pip install tesseract
4-每次将此行添加到您的python脚本中
pytesseract.pytesseract.tesseract_cmd = 'C:/OCR/Tesseract-OCR/tesseract.exe' # your path may be different
5-运行代码。
从https://pypi.org/project/pytesseract/：
pytesseract.pytesseract.tesseract_cmd = '<full_path_to_your_tesseract_executable>'
# Include the above line, if you don't have tesseract executable in your PATH
# Example tesseract_cmd: 'C:\\Program Files (x86)\\Tesseract-OCR\\tesseract'
在Windows中：
点安装tesseract
点安装tesseract-ocr
并检查存储在系统中的文件usr / appdata / local / programs / site-pakages / python / python36 / lib / pytesseract / pytesseract.py文件并编译该文件
pytesseract.pytesseract.tesseract_cmd = r"C:\Program Files (x86)\Tesseract-OCR\tesseract.exe"以使tesseract正常工作。
您可以安装此软件包... https://github.com/UB-Mannheim/tesseract/wiki 之后，您应该转到以下路径C：\ Program Files（x86）\ Tesseract-OCR \ tesseract.exe然后运行tesseract文件。我认为这将帮助您...
我可以通过使用pytesseract.py文件中的bin / tesseract路径更新tesseract_cmd变量来解决此问题
我在Windows上遇到了同样的问题。我尝试为tesseract的路径更新环境变量，该变量不起作用。
对我有用的是修改pytesseract.py，该文件可以在路径中C:\Program Files\Python37\Lib\site-packages\pytesseract或通常在C:\Users\YOUR USER\APPDATA\Python
我根据以下内容更改了一行：
#tesseract_cmd = 'tesseract'
#tesseract_cmd = 'C:\Program Files\Tesseract-OCR\\tesseract.exe'
注意我必须\在tesseract之前加上一个额外的内容，因为Python的解释与之相同\t，您将收到以下错误消息：
pytesseract.pytesseract.TesseractNotFoundError：C：\ Program Files \ Tesseract-OCR esseract.exe未安装或不在您的路径中
第1步：
根据操作系统在系统上安装tesseract。最新的安装程序可以在https://github.com/UB-Mannheim/tesseract/wiki中找到
步骤2：使用以下方法安装以下依赖项库：pip install pytesseract pip install opencv-python pip install numpy
步骤3：示例代码
import cv2
import numpy as np
import pytesseract
from PIL import Image
from pytesseract import image_to_string
# Path of working folder on Disk Replace with your working folder
src_path = "C:\\Users\\<user>\\PycharmProjects\\ImageToText\\input\\"
# If you don't have tesseract executable in your PATH, include the
following:
pytesseract.pytesseract.tesseract_cmd = 'C:/Program Files (x86)/Tesseract-
OCR/tesseract'
TESSDATA_PREFIX = 'C:/Program Files (x86)/Tesseract-OCR'
def get_string(img_path):
# Read image with opencv
img = cv2.imread(img_path)
# Convert to gray
img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# Apply dilation and erosion to remove some noise
kernel = np.ones((1, 1), np.uint8)
img = cv2.dilate(img, kernel, iterations=1)
img = cv2.erode(img, kernel, iterations=1)
# Write image after removed noise
cv2.imwrite(src_path + "removed_noise.png", img)
# Apply threshold to get image with only black and white
#img = cv2.adaptiveThreshold(img, 255, cv2.ADAPTIVE_THRESH_GAUSSIAN_C, cv2.THRESH_BINARY, 31, 2)
# Write the image after apply opencv to do some ...
cv2.imwrite(src_path + "thres.png", img)
# Recognize text with tesseract for python
result = pytesseract.image_to_string(Image.open(src_path + "thres.png"))
# Remove template file
#os.remove(temp)
return result
print('--- Start recognize text from image ---')
print(get_string(src_path + "image.png") )
print("------ Done -------")
可能正在发生这种情况，因为即使正确安装了Tesseract，您也没有像我一样安装语言。幸运的是，这很容易解决，我什至不需要弄乱tesseract_cmd。
sudo apt-get install tesseract-ocr -y
sudo apt-get install tesseract-ocr-spa -y
tesseract --list-langs
请注意，在第二行中，我们指定了 -spa为西班牙语了。
如果安装成功，您应该获得可用语言的列表，例如：
List of available languages (3):
eng
osd
spa
我在这篇博客文章（西班牙语）中找到了这个。还有一个在Windows中安装西班牙语的帖子（显然不那么容易）。
注意：由于问题使用lang = 'eng'，因此在特定情况下可能不是答案。但是在其他情况下也可能发生相同的错误，这就是为什么我在此处发布答案的原因。
# {Windows 10 instructions}
# before you use the script you need to install the dependence
# 1. download the tesseract from the official link:
# https://github.com/UB-Mannheim/tesseract/wiki
# 2. install the tesseract
# i chosed this path
# *replace the user string in the below path with you name of user that you are using in your current machine
# C:\Users\user\AppData\Local\Tesseract-OCR\
# 3. Install the pillow for your python version
# * the best way for me is to install is this form(i'am using python3.7 version and in my CMD i run this version of python by typing py -3.7):
# * if you are using another version of python first look how you start the python from you CMD
# * for some machine the run of python from the CMD is different
# [examples]
# =================================
# PYTHON VERSION 3.7
# python
# python3.7
# python -3.7
# python 3.7
# python3
# python -3
# python 3
# py3.7
# py -3.7
# py 3.7
# py3
# py -3
# py 3
# PYTHON VERSION 3.6
# python
# python3.6
# python -3.6
# python 3.6
# python3
# python -3
# python 3
# py3.6
# py -3.6
# py 3.6
# py3
# py -3
# py 3
# PYTHON VERSION 2.7
# python
# python2.7
# python -2.7
# python 2.7
# python2
# python -2
# python 2
# py2.7
# py -2.7
# py 2.7
# py2
# py -2
# py 2
# ================================
# we are using pip to install the dependences
# because for me i start the python version 3.7 with the following line
# py -3.7
# open the CMD in windows machine and type the following line:
# py -3.7 -m pip install pillow
# 4. Install the pytesseract and tesseract for your python version
# * the best way for me is to install is this form(i'am using python3.7 version and in my CMD i run this version of python by typing py -3.7):
# we are using pip to install the dependences
# open the CMD in windows machine and type the following lines:
# py -3.7 -m pip install pytesseract
# py -3.7 -m pip install tesseract
#!/usr/bin/python
from PIL import Image
import pytesseract
import os
import getpass
def extract_text_from_image(image_file_name_arg):
# IMPORTANT
# if you have followed my instructions to install this dependence in above text explanatin
# for my machine is
# if you don't put the right path for tesseract.exe the script will not work
username = getpass.getuser()
# here above line get the username for your machine automatically
tesseract_exe_path_installation="C:\\Users\\"+username+"\\AppData\\Local\\Tesseract-OCR\\tesseract.exe"
pytesseract.pytesseract.tesseract_cmd=tesseract_exe_path_installation
# specify the direction of your image files manually or use line bellow if the images are in the script directory in folder images
# image_dir="D:\\GIT\\ai_example\\extract_text_from_image\\images"
image_dir=os.getcwd()+"\\images"
dir_seperator="\\"
image_file_name=image_file_name_arg
# if your image are in different format change the extension(ex. ".png")
image_ext=".jpg"
image_path_dir=image_dir+dir_seperator+image_file_name+image_ext
print("=============================================================================")
print("image used is in the following path dir:")
print("\t"+image_path_dir)
print("=============================================================================")
img=Image.open(image_path_dir)
text=pytesseract.image_to_string(img, lang="eng")
print(text)
# change the name "image_1" whith the name without extension for your image name
# image_file_name_arg="image_1"
image_file_name_arg="image_2"
# image_file_name_arg="image_3"
# image_file_name_arg="image_4"
# image_file_name_arg="image_5"
extract_text_from_image(image_file_name_arg)
# ==================================
# CREATED BY: SHERIFI
# e-mail: sherif_co@yahoo.com
# git-link for script: https://github.com/sherifi/ai_example.git
# ==================================
For Ubuntu 18.04
如果您遇到类似的错误
tesseract is not installed or it's not in your path
and
OSError: [Errno 12] Cannot allocate memory
那可能是交换内存分配问题
您可以检查此答案以分配更多的交换内存希望能有所帮助:)
/ubuntu/920595/fallocate-fallocate-failed-text-file-busy-in-ubuntu-17-04?answertab=active#tab-top
已经有很多不错的解决方案，但是我想分享一个很棒的网站，当我无法解决“ TesseractNotFound错误：tesseract未安装或不在您的路径中”时，请访问此网站： https：// /www.thetopsites.net/article/50655738.shtml
我意识到出现此错误是因为我使用pip安装了pytesseract，但忘记了安装二进制文件。您的机器可能缺少tesseract-ocr。在此处查看安装说明：https : //github.com/tesseract-ocr/tesseract/wiki
在Mac上，您可以使用自制软件进行安装：
brew install tesseract
在那之后它应该运行良好！
在Windows 10 OS环境下，以下方法适用于我：
转到此链接并下载tesseract并安装它。Windows版本可在此处获得：https：//github.com/UB-Mannheim/tesseract/wiki
从C：\ Users \ User \ Anaconda3 \ Lib \ site-packages \ pytesseract找到脚本文件pytesseract.py并将其打开。将以下代码从tesseract_cmd ='tesseract'更改为：tesseract_cmd ='C：/ Program Files（x86）/Tesseract-OCR/tesseract.exe' （这是安装Tesseract-OCR的路径，因此请检查安装位置并相应地更新路径）
您可能还需要添加环境变量C：/ Program Files（x86）/ Tesseract-OCR /
希望对你有帮助！
仅适用于Windows用户：
使用以下命令安装tesseract：
pip install tesseract
然后将此行添加到您的代码中，注意“ \”
pytesseract.pytesseract.tesseract_cmd = "C:\Program Files (x86)\Tesseract-OCR\\tesseract.exe"