前景分割工具 (抠图)

API 端点

POST https://jimeng.jianying.com/mweb/v1/aigc_draft/generate

Python 示例

import requests import hashlib import time import uuid import json

def generate_sign(uri_path): device_time = int(time.time()) sign_str = f"9e2c|{uri_path[-7:]}|7|5.8.0|{device_time}||11ac" sign = hashlib.md5(sign_str.encode()).hexdigest() return sign, device_time

def foreground_segmentation(sessionid, image_uri): uri = "/mweb/v1/aigc_draft/generate" sign, device_time = generate_sign(uri)

component_id = str(uuid.uuid4())

draft_content = {
    "type": "draft",
    "id": str(uuid.uuid4()),
    "min_version": "3.3.8",
    "is_from_tsn": True,
    "version": "3.3.8",
    "main_component_id": component_id,
    "component_list": [{
        "type": "image_base_component",
        "id": component_id,
        "min_version": "3.3.8",
        "metadata": {
            "type": "",
            "id": str(uuid.uuid4()),
            "created_platform": 3,
            "created_time_in_ms": int(time.time() * 1000)
        },
        "generate_type": "cutout",
        "aigc_mode": "workbench",
        "abilities": {
            "type": "",
            "id": str(uuid.uuid4()),
            "cutout": {
                "type": "",
                "id": str(uuid.uuid4()),
                "init_image": {
                    "type": "image",
                    "id": str(uuid.uuid4()),
                    "source_from": "upload",
                    "platform_type": 1,
                    "image_uri": image_uri,
                    "uri": image_uri
                },
                "history_option": {"type": "", "id": str(uuid.uuid4())}
            }
        }
    }]
}

headers = {
    "Content-Type": "application/json",
    "Appid": "513695",
    "Appvr": "5.8.0",
    "Pf": "7",
    "Origin": "https://jimeng.jianying.com",
    "Referer": "https://jimeng.jianying.com",
    "Cookie": f"sessionid={sessionid}",
    "Device-Time": str(device_time),
    "Sign": sign,
    "Sign-Ver": "1"
}

data = {
    "extend": {},
    "submit_id": str(uuid.uuid4()),
    "draft_content": json.dumps(draft_content),
    "http_common_info": {"aid": 513695}
}

resp = requests.post(
    f"https://jimeng.jianying.com{uri}",
    params={"aid": 513695, "device_platform": "web", "region": "CN", "da_version": "3.3.8"},
    headers=headers,
    json=data
)
return resp.json()

参数说明

字段 类型 必填 说明

image_uri string 是 输入图片 URI (通过 upload_image 获取)

功能

从图片中提取前景主体，去除背景，输出透明背景 PNG 图片。

使用流程

• 上传图片获取 image_uri (见 dreamina-upload-image)

• 调用抠图 API

• 轮询查询结果 (见 dreamina-query-result)

• 下载透明背景图片