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AnyImage/docs/upscale.md
nan 6c8358f92f Refactor image processing and cutout functionalities
- Updated the naming convention for upscaled images to include underscores and file extensions.
- Renamed properties related to cutout pixel size to point spacing for clarity.
- Adjusted alpha region calculations to use a half-alpha threshold for better accuracy.
- Enhanced the handling of foreground mesh masks to consider half-alpha values.
- Introduced new functions for unbounded selections and cutout images, ensuring proper handling of source and selection images.
- Improved test coverage for cutout functionalities, including bounds mapping and alpha preservation.
- Updated tests to reflect changes in naming conventions and functionality adjustments.
2026-08-27 12:01:47 +08:00

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# 高清放大
Upscale 用 ONNX 模型把 Image Empty 的图片放大 4 倍,不创建网格。它支持单图、Movie 和 Image Sequence,并保留源 Alpha。
## 使用
1. 在 AnyImage 扩展偏好设置中选择 **Default Upscale Model**。
2. 按需要设置 **Maximum Upscale Size**;默认 4096 px,最高 8192 px。
3. 选中 Image Empty,在右键 **AnyImage** 菜单中点击 **Upscale**。
较大的输入会先按比例缩小,使输出不超过尺寸和总像素上限。完成后,当前 Empty 会改用名称以 `_upscale.png` 结尾的结果图片。
## 模型选择
- **Real-ESRGAN General WDN x4v3**:默认模型,速度快,细节处理较保守。
- **SAFMN Real x4**:速度与细节较均衡。
- **Real-ESRGAN x4plus**:生成的细节更明显。
后两项可在扩展偏好设置中按需下载。
对高清结果再次执行 Upscale 时,AnyImage 会从最初的原图重新生成并替换当前结果,不会连续放大已有高清图。
把高清结果继续转换为 Depth Plane、Surface 或 Cutout 时,颜色材质仍使用当前高清图;深度与法线推理会读取保存的放大前原图,以减少计算量并避免凭空增加不必要的几何细节。
如果显存或内存不足,请降低 **Maximum Upscale Size**,或改用 CPU。