[問題] 存檔和LOOP
Hi 各位大大 我又上來請教大家了
目前想用python識別pdf檔 做 key word 查尋
也就是 optical character recognition
昨天朋友說 pytesseract 只能識別圖片 不能識別 pdf檔
所以我先手動把其中一個pdf檔 存成圖檔 當測試
寫了一段code 成功的輸出在 cmd裡
目前在思考 能不能儲存成text檔(格式會跑掉嗎?)
然後讓程式讀取資料夾內的下一個 pdf 檔案 自行轉成 圖檔後 再跑~~
如果以上有可能的話
該怎麼寫呢? 麻煩各位大大 謝謝^^"
以下放code:
from PIL import Image
import pytesseract
import argparse
import cv2
import os
# construct the argument parse and parse the arguments
ap = argparse.ArgumentParser()
ap.add_argument("-i", "--image", required=True,
help="path to input image to be OCR'd")
ap.add_argument("-p", "--preprocess", type=str, default="thresh",
help="type of preprocessing to be done")
args = vars(ap.parse_args())
# load the example image and convert it to grayscale
image = cv2.imread(args["image"])
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
# check to see if we should apply thresholding to preprocess the
# image
if args["preprocess"] == "thresh":
gray = cv2.threshold(gray, 0, 255,
cv2.THRESH_BINARY | cv2.THRESH_OTSU)[1]
# make a check to see if median blurring should be done to remove
# noise
elif args["preprocess"] == "blur":
gray = cv2.medianBlur(gray, 3)
# write the grayscale image to disk as a temporary file so we can
# apply OCR to it
filename = "{}.png".format(os.getpid())
cv2.imwrite(filename, gray)
# load the image as a PIL/Pillow image, apply OCR, and then delete
# the temporary file
text = pytesseract.image_to_string(Image.open(filename))
os.remove(filename)
print(text)
# show the output images
cv2.imshow("Image", image)
cv2.imshow("Output", gray)
cv2.waitKey(0)
--
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