Task: Add Background to Image

Short description: Use the add-background API to generate a new background for a foreground image.

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Overview

• Method: POST
• Path: /task/pic/background
• Content-Type: multipart/form-data

Authentication

• Header: Authorization: Bearer <token>

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Request Example

Form Parameters

Parameter	Type	Required	Description
image_file	file	No	Source image file (binary), mutually exclusive with image_url
image_url	string	No	Source image URL, mutually exclusive with image_file
batch_size	integer	Yes	Number of images to generate per request, default 2, maximum 4; pricing scales with quantity
prompt	string	Yes	Background prompt, supports multiple languages; English produces the best results; max 1024 characters
sync	integer	No	Whether to wait for the result: 0=async (default), 1=sync
callback_url	string	No	Callback URL for task completion notifications

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curl Example

curl -X POST "https://api.gpt.ge/task/pic/background" \
  -H "Authorization: Bearer sk-xxxx" \
  -F "image_url=https://example.com/foreground.png" \
  -F "batch_size=2" \
  -F "prompt=Create a beautiful scenic background for the foreground image" \
  -F "sync=1"

JavaScript (fetch) Example

const formData = new FormData();
formData.append('image_url', 'https://example.com/foreground.png');
formData.append('batch_size', '2');
formData.append('prompt', 'Create a beautiful scenic background for the foreground image');
formData.append('sync', '1');

fetch('https://api.gpt.ge/task/pic/background', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer sk-xxxx'
  },
  body: formData
}).then(r => r.json()).then(console.log);

Python (requests) Example

import requests

url = 'https://api.gpt.ge/task/pic/background'
headers = {
    'Authorization': 'Bearer sk-xxxx'
}

files = {
    'image_url': (None, 'https://example.com/foreground.png')
}
data = {
    'batch_size': '2',
    'prompt': 'Create a beautiful scenic background for the foreground image',
    'sync': '1'
}

response = requests.post(url, headers=headers, files=files, data=data)
print(response.json())

---

Response Example (200)

{
  "status": 200,
  "data": {
    "completed_at": 1742670627,
    "created_at": 1742670626,
    "download_time": 488,
    "err_info": "",
    "foreground_rect": {
      "x": 133,
      "y": 110,
      "width": 604,
      "height": 952
    },
    "image": "https://wxtechsz.oss-cn-shenzhen.aliyuncs.com/tasks/output/segmentation/3b950563-e53f-4036-a581-5ac04d0829b3-image.png",
    "image_height": 1152,
    "image_width": 864,
    "output_type": 2,
    "processed_at": 1742670626,
    "progress": 100,
    "result_type": "object",
    "return_type": 1,
    "state": 1,
    "state_detail": "Complete",
    "task_id": "3b950563-e53f-4036-a581-5ac04d0829b3",
    "time_elapsed": 384.54998779296875,
    "type": "auto"
  }
}

Note: This endpoint uses multipart/form-data to upload the image. Submit either image_url or image_file, not both. Use English prompts for better background generation.