图片格式的表格,识别其中的文字,用代码实现
时间: 2023-06-08 09:05:33 浏览: 102
这个问题需要使用OCR(Optical Character Recognition,光学字符识别)技术来实现。OCR技术能够将印刷文字、手写文字或印刷字符转换成电子文字,并将其输出为计算机可处理的格式。具体实现可以采用一些第三方的OCR库或者API,比如百度OCR、Google Cloud Vision、Tesseract OCR等等。以下是一些简单的示例代码:
使用百度OCR:
```python
import requests
import base64
def get_baidu_ocr_token(api_key, secret_key):
token_url = "https://aip.baidubce.com/oauth/2.0/token"
grant_type = "client_credentials"
request_url = token_url + "?grant_type=" + grant_type + "&client_id=" + api_key + "&client_secret=" + secret_key
response = requests.get(request_url)
if response:
return response.json()["access_token"]
else:
return None
def ocr_image(img_file, api_key, secret_key):
token = get_baidu_ocr_token(api_key, secret_key)
if not token:
return None
request_url = "https://aip.baidubce.com/rest/2.0/ocr/v1/general_basic"
with open(img_file, "rb") as f:
img_data = f.read()
img_base64 = base64.b64encode(img_data).decode()
params = {"image": img_base64}
access_token = token
headers = {"Content-Type": "application/x-www-form-urlencoded"}
request_url = request_url + "?access_token=" + access_token
response = requests.post(request_url, data=params, headers=headers)
if response:
res = response.json()
if "words_result" in res:
return [item["words"] for item in res["words_result"]]
return None
```
使用Google Cloud Vision:
```python
import io
from google.cloud import vision
def ocr_image(img_file, api_key):
client = vision.ImageAnnotatorClient.from_service_account_json(api_key)
with io.open(img_file, "rb") as f:
content = f.read()
image = vision.types.Image(content=content)
response = client.text_detection(image=image)
texts = response.text_annotations
if len(texts) > 0:
return texts[0].description.split("\n")
else:
return None
```
使用Tesseract OCR:
```python
import pytesseract
from PIL import Image
def ocr_image(img_file):
image = Image.open(img_file)
return pytesseract.image_to_string(image).split("\n")
```
以上是三个简单的OCR示例代码,其中百度OCR和Google Cloud Vision需要使用相应的API Key和Secret Key,而Tesseract OCR需要安装pytesseract和Tesseract OCR软件,并确保Tesseract OCR的安装路径在PATH环境变量中。调用这些函数,可以识别图片中包含的文字并将其输出为一个字符串列表。