如何解决具有来自PyTesseract的字符串的IF语句
我是这方面的一个新手(包括Python),但是我正在解决的问题需要它。我已经注释了我的代码,因此希望可以很容易地看到我所做的事情。 我正在尝试实时读取屏幕的一部分,并将OCR检测到的任何文本与所有if / else语句进行比较。当它匹配时,我希望它打印一个字符串。当前,实时OCR检测正常,但不能通过if / else语句来打印正确的字符串。我知道这是因为print(tesstr)提供正确的输出,但是当前代码不会产生任何输出。
# cv2.cvtColor takes a numpy ndarray as an argument
import numpy as nm
import PyTesseract
# importing OpenCV
import cv2
from PIL import ImageGrab
def imToString():
while(True):
# ImageGrab-To capture the screen image in a loop.
# BBox used to capture a specific area.
cap = ImageGrab.grab(bBox=(267,225,344,257))
# Inverted the image for it to be easily
# read by the OCR and obtained the output String.
tesstr = PyTesseract.image_to_string(
cv2.bitwise_not(nm.array(cap)),lang='eng',config = '--psm 7')
if (tesstr == '1'):
print('Ace')
elif (tesstr == '2'):
print('Queen')
elif (tesstr == '3'):
print('King')
...
# Calling the function
imToString()
解决方法
感谢评论,我终于做到了。
问题是由于在我的输出旁边打印了一个非Unicode字符。我仍然不知道为什么这样做,但是下面的工作代码。关于为什么的任何想法都会受到赞赏,但这并不太令人担忧。
# cv2.cvtColor takes a numpy ndarray as an argument
import numpy as nm
# importing Tesseract for the OCR
import pytesseract
# importing OpenCV
import cv2
# importing ImageGrab to take the image of my screen
from PIL import ImageGrab
# importing re to santise my output to something readable by the if statement
import re
def replace_chars(text):
# Replaces all characters instead of numbers from 'text'.
# :param text: Text string to be filtered
# :return: Resulting number
list_of_numbers = re.findall(r'\d+',text)
result_number = ''.join(list_of_numbers)
return result_number
def imToString():
while(True):
# ImageGrab-To capture the screen image in a loop.
# Bbox used to capture a specific area.
cap = ImageGrab.grab(bbox=(267,225,344,257))
# Reading from terminal window,so
# inverted the image for it to be easily
# read by the OCR engine.
# --psm 7 as it reads input as single line.
tesstr = pytesseract.image_to_string(
cv2.bitwise_not(nm.array(cap)),lang='eng',config = '--psm 7')
# Calling replace_chars to only read numbers
tesstr = replace_chars(tesstr)
print(tesstr)
if (tesstr == '1'):
print('Ace')
elif (tesstr == '2'):
print('Queen')
elif (tesstr == '3'):
print('King')
...
# Calling the function
imToString()
从https://return2.net/python-tesseract-4-0-get-numbers-only/盗窃的replace_chars
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