OCR Python 得到错误的字符

Question

我正在尝试识别这张图片中的文字

这是我的试用版

import cv2
import numpy as np
import pytesseract
from PIL import Image

# Path of working folder on Disk
src_path = "E:/PythonApps/characterRecognitionWithTuneWithVoice/"

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"), lang='eng')

# Remove template file
#os.remove(temp)

return result


print '--- Start recognize text from image ---'
print get_string(src_path + "Untitled.png")

print "------ Done -------"

但是我得到了错误的文本字符，如下所示

um msmv unuur

所以知道发生了什么或者我应该怎么做才能得到文本？

感谢您的建议。

Answer 1

可能是你的eng tessdata有问题，你用的是哪个tesseract OCR版本和eng tessdata？

尝试替换 tessdata 目录中的这个 eng tessdata

p.s。您的代码和图像通过配置提供了您想要的精确输出：eng tessdata 和 tesseract 版本 4.x 在我的机器中。

OCR Python 得到错误的字符

OCR Python get wrong characters

python

ocr

python-2.7