# 图像放大

将图像放大到 2K、4K 或 8K。

来源：https://scifig.ai/zh/docs/api/image-upscales

## JSON 请求体

`POST /images/upscales`。所需权限范围：`figures:generate`。

| 字段 | 类型 | 必填 | 默认值 | 规则 |
| --- | --- | --- | --- | --- |
| image | string | 是 | — | 图像的 `file_id` |
| scale | string | 是 | — | `2k`、`4k`（Starter 或更高档位）或 `8k`（Plus 或更高档位）；大于零的积分包余额按 Pro 计算 |

| scale | 积分 |
| --- | --- |
| 2k | 50 |
| 4k | 100 |
| 8k | 150 |

图像已达到目标尺寸时，返回 `400 INVALID_REQUEST` 和 `details.reason = UPSCALE_ALREADY_AT_TARGET`，不扣积分。生成插图约为 2K，因此请选择 `4k` 或 `8k`。放大任务超时后返还积分，且不会稍后交付。响应返回任务；字段和状态请参阅[任务与有限等待](/zh/docs/api/jobs)，错误请参阅[错误](/zh/docs/api/errors)。

## cURL

```bash
curl -X POST https://scifig.ai/api/v1/images/upscales \
  -H "Authorization: Bearer $SCIFIG_API_KEY" \
  -H "Idempotency-Key: $(uuidgen)" \
  -H "Prefer: wait=25" \
  -H "Content-Type: application/json" \
  -d '{
    "image": "<file_id>",
    "scale": "4k"
  }'
```

## JavaScript

```javascript
const response = await fetch('https://scifig.ai/api/v1/images/upscales', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${process.env.SCIFIG_API_KEY}`,
    'Idempotency-Key': crypto.randomUUID(),
    Prefer: 'wait=25',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "image": "<file_id>",
    "scale": "4k"
  }),
});
const result = await response.json();
console.log(response.status, result);
```

## Python

```python
import os
import uuid

import requests

headers = {
    "Authorization": f"Bearer {os.environ['SCIFIG_API_KEY']}",
    "Idempotency-Key": str(uuid.uuid4()),
    "Prefer": "wait=25",
}
response = requests.post(
    "https://scifig.ai/api/v1/images/upscales",
    headers=headers,
    json={
        "image": "<file_id>",
        "scale": "4k"
    },
    timeout=60,
)
print(response.status_code, response.json())
```