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All 181 docs markdown files translated into 20 languages (apps/docs/<locale>/**). Companion to the i18n code PR; admin-merged because the file count exceeds GitHub's per-PR CI trigger limit. Validated by pnpm i18n:check (all surfaces, 0 stale/missing) and a clean all-locale docs build.
84 lines
2.7 KiB
Markdown
84 lines
2.7 KiB
Markdown
---
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description: "使用 Real-ESRGAN AI 超解析度將影像放大 2 倍至 4 倍,同時保留細節。"
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i18n_source_hash: 150032e99476
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i18n_provenance: human
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i18n_output_hash: 05379b6f9563
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---
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# 影像放大 {#image-upscaling}
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使用 Real-ESRGAN 的 AI 超解析度增強。將影像放大 2 至 4 倍,同時保留細節。
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## API 端點 {#api-endpoint}
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`POST /api/v1/tools/image/upscale`
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**處理方式:** 非同步(回傳 202,透過 SSE 輪詢 `/api/v1/jobs/{jobId}/progress` 以取得狀態)
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**模型套件:** `upscale-enhance`(5-6 GB)
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## 參數 {#parameters}
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| 參數 | 型別 | 必填 | 預設值 | 說明 |
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|-----------|------|----------|---------|-------------|
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| file | file | 是 | - | 影像檔案(multipart) |
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| scale | number | 否 | `2` | 放大倍率(例如 2、3、4) |
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| model | string | 否 | `"auto"` | 要使用的模型(例如 `auto`、特定模型名稱) |
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| faceEnhance | boolean | 否 | `false` | 在放大過程中套用臉部增強 |
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| denoise | number | 否 | `0` | 降噪強度(0 = 關閉) |
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| format | string | 否 | `"auto"` | 輸出格式:`auto`、`png`、`jpg`、`webp`、`tiff`、`gif`、`avif`、`heic`、`heif`、`jxl` |
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| quality | number | 否 | `95` | 輸出品質(1-100) |
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## 範例請求 {#example-request}
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```bash
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curl -X POST http://localhost:1349/api/v1/tools/image/upscale \
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-F "file=@photo.jpg" \
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-F 'settings={"scale":4,"model":"auto","faceEnhance":true,"format":"png"}'
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```
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## 回應 {#response}
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### 初始回應(202 Accepted) {#initial-response-202-accepted}
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```json
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{
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"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
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"async": true
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}
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```
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### 進度(SSE 位於 `/api/v1/jobs/{jobId}/progress`) {#progress-sse-at-api-v1-jobs-jobid-progress}
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```
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event: progress
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data: {"phase":"processing","stage":"Upscaling...","percent":60}
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```
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### 最終結果(透過 SSE) {#final-result-via-sse}
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```json
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{
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"phase": "complete",
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"percent": 100,
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"result": {
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"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
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"downloadUrl": "/api/v1/download/{jobId}/photo_4x.png",
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"previewUrl": "/api/v1/download/{jobId}/preview.webp",
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"originalSize": 120000,
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"processedSize": 2400000,
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"width": 4096,
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"height": 4096,
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"method": "realesrgan-x4plus"
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}
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}
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```
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## 注意事項 {#notes}
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- 需要安裝 `upscale-enhance` 模型套件(5-6 GB)。
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- 在可用時使用 Real-ESRGAN;若 AI 模型不可用,則回退到 Lanczos 插值。
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- `faceEnhance` 選項會在放大過程中套用 GFPGAN 臉部修復,以獲得更佳的臉部品質。
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- 對於瀏覽器無法預覽的輸出格式(HEIC、JXL、TIFF),會在主要輸出旁另外產生 WebP 預覽。
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- 透過自動解碼支援 HEIC/HEIF、RAW、TGA、PSD、EXR 與 HDR 輸入格式。
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