Google App Engine：image to base64 OCR（Python）的字符串

我在Google App Engine中有以下代碼，它接受來自用戶的圖像，並隨後在該圖像上執行OCR。Google App Engine：image to base64 OCR（Python）的字符串

的index.html：

<form action="/submit" method="post" enctype="multipart/form-data"> 
    <input type="file" name="newImage" capture="camera"> 
    <input type="submit" value="Submit"> 
</form>

main.py：

import requests 

def image_to_text(encoded_string, content_type="jpeg"): 

    api_key = "API_KEY" 
    overlay = False 
    language = 'eng' 

    payload = {'isOverlayRequired': overlay, 
      'apikey': api_key, 
      'language': language, 
      'base64Image': "data:image/{};base64,{}".format(content_type, 
                  encoded_string) 
      } 

    r = requests.post('https://api.ocr.space/parse/image', 
        data=payload) 
    return r.content.decode() 



class Submit(webapp2.RequestHandler): 
    def post(self): 
     new_image = self.request.get("newImage") 
     if new_image is not '': # ie user uploads an image 
      IMG = UploadImage() 
      IMG.img = new_image # ndb.BlobProperty() 
      img_key = IMG.put() # stores it in datastore 
      img_key_url = img_key.urlsafe() 
      base64_string = new_image.encode('base64') # this is the step that I may be doing wrongly 
      text= image_to_text(base64_string)

但是，我得到了一個錯誤，指出它是不是有效的base64圖像。

以下代碼（用於讀取圖像並將其轉換爲base64字符串）在我從本地磁盤讀取文件時起作用。（我使用的OCR API可以在這裏找到：https://ocr.space/ocrapi#python

OCR.py：！

import requests 
import base64 

def image_to_text(base64_encoded_string=None,content_type="jpeg"): 
    filename = 'image.jpg' 
    with open(filename, 'rb') as f: 
     encoded_string = base64.b64encode(f.read()).strip('\n') 

     api_key = "API_KEY" 
     overlay = False # Boolean value indicating if the overlay is required along with the image/pdf parsed result 
     language = 'eng' 

     payload = {'isOverlayRequired': overlay, 
      'apikey': api_key, 
      'language': language, 
      'base64Image':"data:image/{};base64,{}".format(content_type, 
                  encoded_string) 
      } 



    r = requests.post('https://api.ocr.space/parse/image', 
         data=payload) 
    return r.content.decode()

任何幫助將不勝感激感謝

來源

2017-06-14 chowsai

哦，等一下我解決它在我的自己這樣做：

encoded_string = base64.b64encode(image).strip('\n')

來源

2017-06-14 12:01:14 chowsai

Google App Engine：image to base64 OCR（Python）的字符串

回答

相關問題