Invoice

1. Extract invoice information with image URL or pdf URL input

API:

Params:

Demo Python:

import requests

api_key = "YOUR_API_KEY"
api_secret = "YOUR_API_SECRET"

image_url = 'https://example.com/image.png'

response = requests.get(
  "https://demo.computervision.com.vn/api/v2/ocr/document/invoice?img=%s&format_type=url&get_thumb=false"
  % image_url,
  auth=(api_key, api_secret))

print(response.json())

2. Extract invoice information with image file or pdf file input

API:

Params:

Body:

Demo Python:

import requests

api_key = "YOUR_API_KEY"
api_secret = "YOUR_API_SECRET"
image_path = '/path/to/your/image.jpg'

response = requests.post(
  "https://demo.computervision.com.vn/api/v2/ocr/document/invoice?format_type=file&get_thumb=false",
  auth=(api_key, api_secret),
  files={'img': open(image_path, 'rb')})

print(response.json())

3. Extract invoice information with JSON input

API:

Params:

Body:

{
  "img": "iVBORw0KGgoAAAANSU..." // string base64 of the image or pdf to extract
}

Demo Python:

import base64
import io
import requests
from PIL import Image
def get_byte_img(img):
    img_byte_arr = io.BytesIO()
    img.save(img_byte_arr, format='PNG')
    encoded_img = base64.encodebytes(img_byte_arr.getvalue()).decode('ascii')
    return encoded_img
api_key = "YOUR_API_KEY"
api_secret = "YOUR_API_SECRET"
img_name = "path_img"
encode_cmt = get_byte_img(Image.open(img_name))
response = requests.post(
    "https://demo.computervision.com.vn/api/v2/ocr/document/invoice?format_type=base64&get_thumb=false",
    auth=(api_key, api_secret),
    json={'img' : encode_cmt})
print(response.json())

4. Extract invoice information with xml file input

API:

Params:

Body:

Demo Python:

import requests

api_key = "YOUR_API_KEY"
api_secret = "YOUR_API_SECRET"
image_path = '/path/to/your/invoice.xml'

response = requests.post(
  "https://demo.computervision.com.vn/api/v2/ocr/document/invoice-xml?format_type=file&get_thumb=false",
  auth=(api_key, api_secret),
  files={'img': open(image_path, 'rb')})

print(response.json())

5. Response

The response will be a JSON with the following format:

{
  "data": [xxxx],
  "errorCode": string,
  "errorMessage": string
}

Where the data field is a list, each element in the list corresponds to an invoice page. Each of these elements has the following format:

{
  "type": "invoice", // Thể hiện loại giấy tờ ở đây là hóa đơn
  "info": [xxxx]
}

The info field will contain the following information:

• account_bank: This field is a list. Each element contains the following fields:
  • account_no
  • account_no_box
  • account_no_confidence
  • bank
  • bank_box
  • bank_confidence
• buyer_name
• buyer_name_box
• buyer_name_confidence
• date
• date_box
• date_confidence
• form
• form_box
• form_confidence
• image
• image_table
• invoice_no
• invoice_no_box
• invoice_no_confidence
• lookup_code
• lookup_code_box
• lookup_code_confidence
• lookup_website
• lookup_website_box
• lookup_website_confidence
• payment_method
• payment_method_box
• payment_method_confidence
• purchaser_name
• purchaser_name_box
• purchaser_name_confidence
• serial_no
• serial_no_box
• serial_no_confidence
• sub_total
• sub_total_box
• sub_total_confidence
• supplier
• supplier_box
• supplier_confidence
• supplier_address
• supplier_address_box
• supplier_address_confidence
• table: This field is a list. Each element contains the following fields:
  • value
  • box
  • score
  • label: Can be one of the following values:
    • number
    • description
    • unit
    • quantity
    • unit_price
    • amount_before_tax
    • tax
    • tax_amount
    • amount_total
• tax_code
• tax_code_box
• tax_code_confidence
• total_amount
• total_amount_box
• total_amount_confidence
• vat_amount
• vat_amount_box
• vat_amount_confidence
• vat_rate
• vat_rate_box
• vat_rate_confidence

Error code table: