# 生成图像（豆包原生）
> 以 Seedream 原生结构提交图像任务
> 同步返回，一次响应给出全部结果，没有任务需要轮询
> 文生图、单图编辑、多图融合由 `image` 字段是否传入决定
`POST /doubao/api/v3/images/generations`
## 认证
- `Authorization` (string / 必填) — 所有接口均使用 Bearer Token 进行认证。 Seedream 系列的接口需要在 [ark 站](https://ark.oairoute.com/) 单独获取 Key，与 api 站的 Key 不通用。 请求时在请求头中添加： ```http Authorization: Bearer YOUR_ARK_KEY ```
## 请求结构
把客户端 base_url 配成 `https://ark.oairoute.com/doubao/api/v3`，即可沿用方舟的字段名直接对接。
请求体是平铺的 JSON，没有 `content` 数组。字段与方舟 API 一致并原样透传，上游新增参数无需网关升级。
**文生图、图生图还是多图融合，只由 `image` 字段决定：**
| 场景 | `image` |
|---|---|
| 文生图 | 不传 |
| 单图编辑 | 字符串，公网 URL 或 `data:` URI |
| 多图融合 | 字符串数组，最多 10 张 |
`model` 必须写全名。`seedream-5` 之类的缩写会返回 400。
## 支持的场景
| 场景 | 字段组合 |
|---|---|
| 文生图 | `prompt` |
| 文生图-指定像素 | `prompt` + `size: "2048x2048"` |
| 单图编辑 | `prompt` + `image`（字符串） |
| 多图融合 | `prompt` + `image`（2 到 10 张数组） |
| 按坐标编辑 | `prompt` 中带 `[x1, y1, x2, y2]` 坐标 + `image` |
| 生成组图 | `sequential_image_generation: "auto"` + `sequential_image_generation_options.max_images` |
| Base64 输入 | `image` 传 `data:image/<格式>;base64,...` |
| 图层拆分 | `image`（恰好 1 张）+ `layer_decomposition: true` |
| 透明背景 | `image`（1 张）+ `background: transparent` + `output_format: png` |
## 请求参数
- `model` (string / 必填) — 图像模型 ID，必须写全名。取值见下方模型列表。
- `prompt` (string / 条件必填) — 图像描述。图生图时描述你想要的改动；`layer_decomposition` 为 `true` 时可不传。
- `image` (string | string[] / 可选) — 参考图。每一项是公网 URL 或格式小写的 `data:image/<format>;base64,...` URI。最多 10 张，单张不超过 30MB。**从第二张参考图起额外计费。**
- `size` (string / 可选) — 输出尺寸，两种写法二选一：档位 `1K`、`1.5K`、`2K`；或具体像素 `宽x高`，范围 `1024x1024` 到 `4096x4096`，宽高比 1:16 到 16:1。默认 `2K`。 `layer_decomposition` 为 `true` 时只接受 `1K`、`1.5K`、`2K` 或 `auto`，通常用 `auto`。
- `response_format` (string / 可选) — 默认 `url`，返回有效期 24 小时的临时链接，需要留存请及时下载。 本路径**只支持 `url`**，传 `b64_json` 会被拒绝；需要 Base64 请改用 `POST /v1/images/generations`。
- `watermark` (boolean / 可选) — 默认 **`true`**，为 `true` 时在右下角添加「AI 生成」水印。需要无水印必须显式传 `false`。
- `seed` (integer / 可选) — 随机种子，用于复现结果，取值 `-1` 到 `2147483647`，`-1` 为随机。
- `guidance_scale` (number / 可选) — 提示词遵循强度，值越高越严格贴合提示词。
- `output_format` (string / 可选) — 输出图片格式，取值 `jpeg`（默认）或 `png`。
- `background` (string / 可选) — 背景处理方式。`opaque`（默认）为正常背景；`transparent` 为透明背景，要求恰好一张参考图，且不能与 `output_format: jpeg` 同时使用，搭配 `output_format: png` 使用。
- `optimize_prompt` (boolean / 可选) — 生成前由模型扩写并优化提示词。
- `optimize_prompt_options` (object / 可选) — 提示词优化设置，仅在启用提示词优化时生效。 `mode` 取 `standard` 使用完整优化器；取 `fast` 使用快速优化器，仅 `doubao-seedream-5-0-pro-260628` 支持。
- `layer_decomposition` (boolean / 可选) — 默认 `false`。把输入拆成底图与若干独立图层，便于后续编辑。要求恰好一张参考图，每个输出图层单独计费。为 `true` 时 `prompt` 可省略。
- `sequential_image_generation` (string / 可选) — 取值 `auto` 开启组图，或 `disabled` 关闭。配合 `sequential_image_generation_options.max_images` 控制张数，参考图与生成图合计不超过 15 张。
- `stream` (boolean / 可选) — **不支持**，已废弃。网关始终一次性返回完整 JSON，传 `true` 会被拒绝。
## 尺寸与像素
**档位：** `1K`、`1.5K`、`2K`，默认 `2K`。
**精确像素：** 宽高各自须落在 `1024` 到 `4096` 之间，宽高比须在 1:16 到 16:1 之间。
图层拆分时尺寸只接受 `1K`、`1.5K`、`2K` 或 `auto`，通常用 `auto`。
## 响应
同步返回，`data` 中每项对应一张生成的图片：
```json
{
  "data": [
    {
      "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/xxx.jpeg",
      "size": "2048x2048",
      "output_format": "jpeg"
    }
  ],
  "created": 1757469067,
  "usage": {
    "generated_images": 1,
    "output_tokens": 15908,
    "total_tokens": 15908
  }
}
```
- `data` (array) — 生成的图片。
- `data[].url` (string) — 有效期 24 小时的图片链接，`response_format` 为 `url` 时返回。
- `data[].b64_json` (string) — `response_format` 为 `b64_json` 时返回的 Base64 内容。
- `data[].size` (string) — 该张图片的实际像素尺寸。
- `data[].output_format` (string) — 该张图片的文件格式。图层固定为 `png`，底图跟随请求中的 `output_format`。
- `data[].z_index` (integer) — 图层叠放顺序，仅图层拆分时返回。底图固定为 `0`，图层从 `1` 开始递增，数值越大越靠上层。
- `data[].name` (string) — 图层名称，仅图层拆分时返回，由模型自动生成。
- `data[].description` (string) — 图层描述，仅图层拆分时返回，比 `name` 更详细。
- `data[].bounding_box` (object) — 图层在输出底图坐标系中所占区域，仅图层返回。含 `absolute`（绝对像素 `[left, top, right, bottom]`）与 `normalized`（换算到 `0` 到 `1000` 区间的同一区域）。
- `data[].error` (object) — 单图失败信息，仅组图场景中某一张失败而其余成功时出现，含 `code`、`message`。
- `created` (integer) — 完成时间，Unix 秒。
- `usage` (object) — 用量信息，网关按此结算。含 `generated_images`、`input_images`、`output_tokens`、`total_tokens`。
> **Note:** 
> 生成是同步的，请求会阻塞到全部图片出完。1K 通常几十秒内返回，2K 更久，客户端超时建议设到 5 分钟以上。
## 错误码
| HTTP | 含义 |
|---|---|
| 400 | 请求参数错误：模型未知、`size` 超出模型范围、参考图过多、该模型不支持的字段，或 `response_format` 不是 `url` |
| 401 | Token 缺失或无效，type 为 authentication_error |
| 429 | 触发限流 |
更多状态码与重试建议见[错误码与限流](../../../support/errors.html)，常见报错的排查步骤见[常见问题](../../../support/faq.html)。
## 支持的模型列表
以下图像模型均可通过本接口提交任务，清单只列各厂商最新一代，实际可用范围以你的账号分组为准：
:::models image
> **Note:** 完整模型目录（含价格、分辨率上限）可读取 `GET https://ark.oairoute.com/api/pricing`。
## 使用示例
### 同步返回，无需轮询
提交后直接在响应里拿 `data[].url`。链接 24 小时有效，需要长期保存请及时转存。
### 组图
`sequential_image_generation: "auto"` 一次最多返回 4 张同主题图片，例如同一角色在早晨、正午、傍晚的样子。某一张失败时该数组项只带 `error`，其余照常返回。
### 图层还原
拆分得到的图层按下标与 `url`、`size`、`output_format` 对应，`z_index` 为 `0` 的是底图。
1. 按 `z_index` 从小到大叠放
2. 绝对坐标换算为 `x=left`、`y=top`、`w=right−left`、`h=bottom−top`
3. 任意 W×H 画布用归一化值除以 1000 再乘画布尺寸
### 关闭水印
默认带「AI 生成」水印，商用场景必须显式传 `watermark: false`。是否允许去水印取决于你的账号分组。
**文生图{Text to image}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "星空下的雪山湖泊，倒映着银河，写实摄影风格",
  "size": "2K"
}'
```
**文生图{Text to image}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "星空下的雪山湖泊，倒映着银河，写实摄影风格",
    "size": "2K",
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**文生图{Text to image}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-pro-260628",
    prompt: "星空下的雪山湖泊，倒映着银河，写实摄影风格",
    size: "2K",
  }),
});
console.log(await res.json());
```
**指定像素{Pixel size}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "一只橘猫坐在窗台上看雨，胶片质感，柔和光线",
  "size": "2048x2048",
  "watermark": false
}'
```
**指定像素{Pixel size}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "一只橘猫坐在窗台上看雨，胶片质感，柔和光线",
    "size": "2048x2048",
    "watermark": False,
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**指定像素{Pixel size}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-pro-260628",
    prompt: "一只橘猫坐在窗台上看雨，胶片质感，柔和光线",
    size: "2048x2048",
    watermark: false,
  }),
});
console.log(await res.json());
```
**单图编辑{Single-image edit}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-flash-260915",
  "prompt": "把这张照片改成夜景，增加霓虹灯氛围",
  "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
  "size": "2K",
  "watermark": false
}'
```
**单图编辑{Single-image edit}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-flash-260915",
    "prompt": "把这张照片改成夜景，增加霓虹灯氛围",
    "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    "size": "2K",
    "watermark": False,
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**单图编辑{Single-image edit}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-flash-260915",
    prompt: "把这张照片改成夜景，增加霓虹灯氛围",
    image: "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    size: "2K",
    watermark: false,
  }),
});
console.log(await res.json());
```
**多图融合{Multi-image fusion}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "把两张图中的人物和场景自然融合到同一画面",
  "image": [
    "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_2.png"
  ],
  "size": "2K",
  "watermark": false
}'
```
**多图融合{Multi-image fusion}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "把两张图中的人物和场景自然融合到同一画面",
    "image": [
        "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
        "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_2.png",
    ],
    "size": "2K",
    "watermark": False,
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**多图融合{Multi-image fusion}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-pro-260628",
    prompt: "把两张图中的人物和场景自然融合到同一画面",
    image: [
      "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
      "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_2.png",
    ],
    size: "2K",
    watermark: false,
  }),
});
console.log(await res.json());
```
**按坐标编辑{Coordinate edit}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "把框 [225, 442, 796, 1414] 内的区域替换成一把红色纸伞",
  "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
  "size": "2K",
  "watermark": false
}'
```
**按坐标编辑{Coordinate edit}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "把框 [225, 442, 796, 1414] 内的区域替换成一把红色纸伞",
    "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    "size": "2K",
    "watermark": False,
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**按坐标编辑{Coordinate edit}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-pro-260628",
    prompt: "把框 [225, 442, 796, 1414] 内的区域替换成一把红色纸伞",
    image: "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    size: "2K",
    watermark: false,
  }),
});
console.log(await res.json());
```
**生成组图{Image group}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "女孩抱着奶牛玩偶坐过山车，早晨、正午与傍晚",
  "sequential_image_generation": "auto",
  "sequential_image_generation_options": { "max_images": 4 },
  "size": "2K",
  "watermark": false
}'
```
**生成组图{Image group}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "女孩抱着奶牛玩偶坐过山车，早晨、正午与傍晚",
    "sequential_image_generation": "auto",
    "sequential_image_generation_options": {"max_images": 4},
    "size": "2K",
    "watermark": False,
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**生成组图{Image group}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-pro-260628",
    prompt: "女孩抱着奶牛玩偶坐过山车，早晨、正午与傍晚",
    sequential_image_generation: "auto",
    sequential_image_generation_options: { max_images: 4 },
    size: "2K",
    watermark: false,
  }),
});
console.log(await res.json());
```
**图层拆分{Layer decomposition}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-pro-260628",
  "prompt": "把主体与背景分离，每个元素各占一层",
  "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
  "layer_decomposition": true,
  "size": "auto"
}'
```
**图层拆分{Layer decomposition}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-pro-260628",
    "prompt": "把主体与背景分离，每个元素各占一层",
    "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    "layer_decomposition": True,
    "size": "auto",
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**图层拆分{Layer decomposition}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-pro-260628",
    prompt: "把主体与背景分离，每个元素各占一层",
    image: "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    layer_decomposition: true,
    size: "auto",
  }),
});
console.log(await res.json());
```
**透明背景{Transparent background}::cURL**
```
curl --request POST \
  --url 'https://ark.oairoute.com/doubao/api/v3/images/generations' \
  --header 'Authorization: Bearer YOUR_ARK_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
  "model": "doubao-seedream-5-0-flash-260915",
  "prompt": "一盏红色纸灯笼，独立主体，影棚灯光",
  "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
  "background": "transparent",
  "output_format": "png",
  "size": "2K"
}'
```
**透明背景{Transparent background}::Python**
```
import requests
url = "https://ark.oairoute.com/doubao/api/v3/images/generations"
headers = {
    "Authorization": "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
}
payload = {
    "model": "doubao-seedream-5-0-flash-260915",
    "prompt": "一盏红色纸灯笼，独立主体，影棚灯光",
    "image": "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    "background": "transparent",
    "output_format": "png",
    "size": "2K",
}
res = requests.post(url, headers=headers, json=payload)
print(res.json())
```
**透明背景{Transparent background}::JavaScript**
```
const res = await fetch("https://ark.oairoute.com/doubao/api/v3/images/generations", {
  method: "POST",
  headers: {
    Authorization: "Bearer YOUR_ARK_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "doubao-seedream-5-0-flash-260915",
    prompt: "一盏红色纸灯笼，独立主体，影棚灯光",
    image: "https://ark-project.tos-cn-beijing.volces.com/doc_image/seedream4_imagesToimages_1.png",
    background: "transparent",
    output_format: "png",
    size: "2K",
  }),
});
console.log(await res.json());
```
**200 文生图{Text to image}**
```
{
  "data": [
    {
      "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/xxx.jpeg",
      "size": "2048x2048",
      "output_format": "jpeg"
    }
  ],
  "created": 1757469067,
  "usage": {
    "generated_images": 1,
    "output_tokens": 15908,
    "total_tokens": 15908
  }
}
```
**200 单图编辑{Single-image edit}**
```
{
  "data": [
    {
      "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/edit-xxx.jpeg",
      "size": "2048x2048",
      "output_format": "jpeg"
    }
  ],
  "created": 1757469067,
  "usage": {
    "generated_images": 1,
    "input_images": 1,
    "output_tokens": 15908,
    "total_tokens": 15908
  }
}
```
**200 生成组图{Image group}**
```
{
  "data": [
    { "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/g1.jpeg", "size": "2048x2048", "output_format": "jpeg" },
    { "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/g2.jpeg", "size": "2048x2048", "output_format": "jpeg" },
    { "error": { "code": "content_policy_violation", "message": "提示词违反了内容安全策略" } },
    { "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/g4.jpeg", "size": "2048x2048", "output_format": "jpeg" }
  ],
  "created": 1757469067,
  "usage": {
    "generated_images": 3,
    "output_tokens": 47724,
    "total_tokens": 47724
  }
}
```
**200 图层拆分{Layer decomposition}**
```
{
  "data": [
    {
      "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/base.png",
      "size": "2048x2048",
      "z_index": 0
    },
    {
      "url": "https://ark-content-generation-v2-cn-beijing.tos-cn-beijing.volces.com/seedream/layer-1.png",
      "size": "796x972",
      "z_index": 1,
      "name": "女孩",
      "description": "穿黄色雨衣的女孩，正面朝向镜头",
      "bounding_box": {
        "absolute": [225, 442, 796, 1414],
        "normalized": [220, 432, 777, 1000]
      }
    }
  ],
  "created": 1757469067,
  "usage": {
    "generated_images": 2,
    "output_tokens": 31816,
    "total_tokens": 31816
  }
}
```