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# ํ›‘์–ด๋ณด๊ธฐ
๐Ÿงจ Diffusers๋กœ ๋น ๋ฅด๊ฒŒ ์‹œ์ž‘ํ•˜๊ณ  ์‹คํ–‰ํ•˜์„ธ์š”!
์ด ํ›‘์–ด๋ณด๊ธฐ๋Š” ์—ฌ๋Ÿฌ๋ถ„์ด ๊ฐœ๋ฐœ์ž, ์ผ๋ฐ˜์‚ฌ์šฉ์ž ์ƒ๊ด€์—†์ด ์‹œ์ž‘ํ•˜๋Š” ๋ฐ ๋„์›€์„ ์ฃผ๋ฉฐ, ์ถ”๋ก ์„ ์œ„ํ•ด [`DiffusionPipeline`] ์‚ฌ์šฉํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ๋ณด์—ฌ์ค๋‹ˆ๋‹ค.
์‹œ์ž‘ํ•˜๊ธฐ์— ์•ž์„œ์„œ, ํ•„์š”ํ•œ ๋ชจ๋“  ๋ผ์ด๋ธŒ๋Ÿฌ๋ฆฌ๊ฐ€ ์„ค์น˜๋˜์–ด ์žˆ๋Š”์ง€ ํ™•์ธํ•˜์„ธ์š”:
```bash
pip install --upgrade diffusers accelerate transformers
```
- [`accelerate`](https://huggingface.co/docs/accelerate/index)์€ ์ถ”๋ก  ๋ฐ ํ•™์Šต์„ ์œ„ํ•œ ๋ชจ๋ธ ๋ถˆ๋Ÿฌ์˜ค๊ธฐ ์†๋„๋ฅผ ๋†’์ž…๋‹ˆ๋‹ค.
- [`transformers`](https://huggingface.co/docs/transformers/index)๋Š” [Stable Diffusion](https://huggingface.co/docs/diffusers/api/pipelines/stable_diffusion/overview)๊ณผ ๊ฐ™์ด ๊ฐ€์žฅ ๋„๋ฆฌ ์‚ฌ์šฉ๋˜๋Š” ํ™•์‚ฐ ๋ชจ๋ธ์„ ์‹คํ–‰ํ•˜๊ธฐ ์œ„ํ•ด ํ•„์š”ํ•ฉ๋‹ˆ๋‹ค.
## DiffusionPipeline
[`DiffusionPipeline`]์€ ์ถ”๋ก ์„ ์œ„ํ•ด ์‚ฌ์ „ํ•™์Šต๋œ ํ™•์‚ฐ ์‹œ์Šคํ…œ์„ ์‚ฌ์šฉํ•˜๋Š” ๊ฐ€์žฅ ์‰ฌ์šด ๋ฐฉ๋ฒ•์ž…๋‹ˆ๋‹ค. ๋‹ค์–‘ํ•œ ์–‘์‹์˜ ๋งŽ์€ ์ž‘์—…์— [`DiffusionPipeline`]์„ ๋ฐ”๋กœ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ง€์›๋˜๋Š” ์ž‘์—…์€ ์•„๋ž˜์˜ ํ‘œ๋ฅผ ์ฐธ๊ณ ํ•˜์„ธ์š”:
| **Task** | **Description** | **Pipeline**
|------------------------------|--------------------------------------------------------------------------------------------------------------|-----------------|
| Unconditional Image Generation | ๊ฐ€์šฐ์‹œ์•ˆ ๋…ธ์ด์ฆˆ์—์„œ ์ด๋ฏธ์ง€ ์ƒ์„ฑ | [unconditional_image_generation](./using-diffusers/unconditional_image_generation`) |
| Text-Guided Image Generation | ํ…์ŠคํŠธ ํ”„๋กฌํ”„ํŠธ๋กœ ์ด๋ฏธ์ง€ ์ƒ์„ฑ | [conditional_image_generation](./using-diffusers/conditional_image_generation) |
| Text-Guided Image-to-Image Translation | ํ…์ŠคํŠธ ํ”„๋กฌํ”„ํŠธ์— ๋”ฐ๋ผ ์ด๋ฏธ์ง€ ์กฐ์ • | [img2img](./using-diffusers/img2img) |
| Text-Guided Image-Inpainting | ๋งˆ์Šคํฌ ๋ฐ ํ…์ŠคํŠธ ํ”„๋กฌํ”„ํŠธ๊ฐ€ ์ฃผ์–ด์ง„ ์ด๋ฏธ์ง€์˜ ๋งˆ์Šคํ‚น๋œ ๋ถ€๋ถ„์„ ์ฑ„์šฐ๊ธฐ | [inpaint](./using-diffusers/inpaint) |
| Text-Guided Depth-to-Image Translation | ๊นŠ์ด ์ถ”์ •์„ ํ†ตํ•ด ๊ตฌ์กฐ๋ฅผ ์œ ์ง€ํ•˜๋ฉด์„œ ํ…์ŠคํŠธ ํ”„๋กฌํ”„ํŠธ์— ๋”ฐ๋ผ ์ด๋ฏธ์ง€์˜ ์ผ๋ถ€๋ฅผ ์กฐ์ • | [depth2image](./using-diffusers/depth2image) |
ํ™•์‚ฐ ํŒŒ์ดํ”„๋ผ์ธ์ด ๋‹ค์–‘ํ•œ ์ž‘์—…์— ๋Œ€ํ•ด ์–ด๋–ป๊ฒŒ ์ž‘๋™ํ•˜๋Š”์ง€๋Š” [**Using Diffusers**](./using-diffusers/overview)๋ฅผ ์ฐธ๊ณ ํ•˜์„ธ์š”.
์˜ˆ๋ฅผ๋“ค์–ด, [`DiffusionPipeline`] ์ธ์Šคํ„ด์Šค๋ฅผ ์ƒ์„ฑํ•˜์—ฌ ์‹œ์ž‘ํ•˜๊ณ , ๋‹ค์šด๋กœ๋“œํ•˜๋ ค๋Š” ํŒŒ์ดํ”„๋ผ์ธ ์ฒดํฌํฌ์ธํŠธ๋ฅผ ์ง€์ •ํ•ฉ๋‹ˆ๋‹ค.
๋ชจ๋“  [Diffusers' checkpoint](https://huggingface.co/models?library=diffusers&sort=downloads)์— ๋Œ€ํ•ด [`DiffusionPipeline`]์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
ํ•˜์ง€๋งŒ, ์ด ๊ฐ€์ด๋“œ์—์„œ๋Š” [Stable Diffusion](https://huggingface.co/CompVis/stable-diffusion)์„ ์‚ฌ์šฉํ•˜์—ฌ text-to-image๋ฅผ ํ•˜๋Š”๋ฐ [`DiffusionPipeline`]์„ ์‚ฌ์šฉํ•ฉ๋‹ˆ๋‹ค.
[Stable Diffusion](https://huggingface.co/CompVis/stable-diffusion) ๊ธฐ๋ฐ˜ ๋ชจ๋ธ์„ ์‹คํ–‰ํ•˜๊ธฐ ์ „์— [license](https://huggingface.co/spaces/CompVis/stable-diffusion-license)๋ฅผ ์ฃผ์˜ ๊นŠ๊ฒŒ ์ฝ์œผ์„ธ์š”.
์ด๋Š” ๋ชจ๋ธ์˜ ํ–ฅ์ƒ๋œ ์ด๋ฏธ์ง€ ์ƒ์„ฑ ๊ธฐ๋Šฅ๊ณผ ์ด๊ฒƒ์œผ๋กœ ์ƒ์„ฑ๋  ์ˆ˜ ์žˆ๋Š” ์œ ํ•ดํ•œ ์ฝ˜ํ…์ธ  ๋•Œ๋ฌธ์ž…๋‹ˆ๋‹ค. ์„ ํƒํ•œ Stable Diffusion ๋ชจ๋ธ(*์˜ˆ*: [`runwayml/stable-diffusion-v1-5`](https://huggingface.co/runwayml/stable-diffusion-v1-5))๋กœ ์ด๋™ํ•˜์—ฌ ๋ผ์ด์„ผ์Šค๋ฅผ ์ฝ์œผ์„ธ์š”.
๋‹ค์Œ๊ณผ ๊ฐ™์ด ๋ชจ๋ธ์„ ๋กœ๋“œํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค:
```python
>>> from diffusers import DiffusionPipeline
>>> pipeline = DiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5")
```
[`DiffusionPipeline`]์€ ๋ชจ๋“  ๋ชจ๋ธ๋ง, ํ† ํฐํ™” ๋ฐ ์Šค์ผ€์ค„๋ง ๊ตฌ์„ฑ์š”์†Œ๋ฅผ ๋‹ค์šด๋กœ๋“œํ•˜๊ณ  ์บ์‹œํ•ฉ๋‹ˆ๋‹ค.
๋ชจ๋ธ์€ ์•ฝ 14์–ต๊ฐœ์˜ ๋งค๊ฐœ๋ณ€์ˆ˜๋กœ ๊ตฌ์„ฑ๋˜์–ด ์žˆ์œผ๋ฏ€๋กœ GPU์—์„œ ์‹คํ–‰ํ•˜๋Š” ๊ฒƒ์ด ์ข‹์Šต๋‹ˆ๋‹ค.
PyTorch์—์„œ์™€ ๋งˆ์ฐฌ๊ฐ€์ง€๋กœ ์ƒ์„ฑ๊ธฐ ๊ฐ์ฒด๋ฅผ GPU๋กœ ์˜ฎ๊ธธ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
```python
>>> pipeline.to("cuda")
```
์ด์ œ `pipeline`์„ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค:
```python
>>> image = pipeline("An image of a squirrel in Picasso style").images[0]
```
์ถœ๋ ฅ์€ ๊ธฐ๋ณธ์ ์œผ๋กœ [PIL Image object](https://pillow.readthedocs.io/en/stable/reference/Image.html?highlight=image#the-image-class)๋กœ ๋ž˜ํ•‘๋ฉ๋‹ˆ๋‹ค.
๋‹ค์Œ๊ณผ ๊ฐ™์ด ํ•จ์ˆ˜๋ฅผ ํ˜ธ์ถœํ•˜์—ฌ ์ด๋ฏธ์ง€๋ฅผ ์ €์žฅํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค:
```python
>>> image.save("image_of_squirrel_painting.png")
```
**์ฐธ๊ณ **: ๋‹ค์Œ์„ ํ†ตํ•ด ๊ฐ€์ค‘์น˜๋ฅผ ๋‹ค์šด๋กœ๋“œํ•˜์—ฌ ๋กœ์ปฌ์—์„œ ํŒŒ์ดํ”„๋ผ์ธ์„ ์‚ฌ์šฉํ•  ์ˆ˜๋„ ์žˆ์Šต๋‹ˆ๋‹ค:
```
git lfs install
git clone https://huggingface.co/runwayml/stable-diffusion-v1-5
```
๊ทธ๋ฆฌ๊ณ  ์ €์žฅ๋œ ๊ฐ€์ค‘์น˜๋ฅผ ํŒŒ์ดํ”„๋ผ์ธ์— ๋ถˆ๋Ÿฌ์˜ต๋‹ˆ๋‹ค.
```python
>>> pipeline = DiffusionPipeline.from_pretrained("./stable-diffusion-v1-5")
```
ํŒŒ์ดํ”„๋ผ์ธ ์‹คํ–‰์€ ๋™์ผํ•œ ๋ชจ๋ธ ์•„ํ‚คํ…์ฒ˜์ด๋ฏ€๋กœ ์œ„์˜ ์ฝ”๋“œ์™€ ๋™์ผํ•ฉ๋‹ˆ๋‹ค.
```python
>>> generator.to("cuda")
>>> image = generator("An image of a squirrel in Picasso style").images[0]
>>> image.save("image_of_squirrel_painting.png")
```
ํ™•์‚ฐ ์‹œ์Šคํ…œ์€ ๊ฐ๊ฐ ์žฅ์ ์ด ์žˆ๋Š” ์—ฌ๋Ÿฌ ๋‹ค๋ฅธ [schedulers](./api/schedulers/overview)์™€ ํ•จ๊ป˜ ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๊ธฐ๋ณธ์ ์œผ๋กœ Stable Diffusion์€ `PNDMScheduler`๋กœ ์‹คํ–‰๋˜์ง€๋งŒ ๋‹ค๋ฅธ ์Šค์ผ€์ค„๋Ÿฌ๋ฅผ ์‚ฌ์šฉํ•˜๋Š” ๋ฐฉ๋ฒ•์€ ๋งค์šฐ ๊ฐ„๋‹จํ•ฉ๋‹ˆ๋‹ค. *์˜ˆ* [`EulerDiscreteScheduler`] ์Šค์ผ€์ค„๋Ÿฌ๋ฅผ ์‚ฌ์šฉํ•˜๋ ค๋Š” ๊ฒฝ์šฐ, ๋‹ค์Œ๊ณผ ๊ฐ™์ด ์‚ฌ์šฉํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค:
```python
>>> from diffusers import EulerDiscreteScheduler
>>> pipeline = StableDiffusionPipeline.from_pretrained("runwayml/stable-diffusion-v1-5")
>>> # change scheduler to Euler
>>> pipeline.scheduler = EulerDiscreteScheduler.from_config(pipeline.scheduler.config)
```
์Šค์ผ€์ค„๋Ÿฌ ๋ณ€๊ฒฝ ๋ฐฉ๋ฒ•์— ๋Œ€ํ•œ ์ž์„ธํ•œ ๋‚ด์šฉ์€ [Using Schedulers](./using-diffusers/schedulers) ๊ฐ€์ด๋“œ๋ฅผ ์ฐธ๊ณ ํ•˜์„ธ์š”.
[Stability AI's](https://stability.ai/)์˜ Stable Diffusion ๋ชจ๋ธ์€ ์ธ์ƒ์ ์ธ ์ด๋ฏธ์ง€ ์ƒ์„ฑ ๋ชจ๋ธ์ด๋ฉฐ ํ…์ŠคํŠธ์—์„œ ์ด๋ฏธ์ง€๋ฅผ ์ƒ์„ฑํ•˜๋Š” ๊ฒƒ๋ณด๋‹ค ํ›จ์”ฌ ๋” ๋งŽ์€ ์ž‘์—…์„ ์ˆ˜ํ–‰ํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์šฐ๋ฆฌ๋Š” Stable Diffusion๋งŒ์„ ์œ„ํ•œ ์ „์ฒด ๋ฌธ์„œ ํŽ˜์ด์ง€๋ฅผ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค [link](./conceptual/stable_diffusion).
๋งŒ์•ฝ ๋” ์ ์€ ๋ฉ”๋ชจ๋ฆฌ, ๋” ๋†’์€ ์ถ”๋ก  ์†๋„, Mac๊ณผ ๊ฐ™์€ ํŠน์ • ํ•˜๋“œ์›จ์–ด ๋˜๋Š” ONNX ๋Ÿฐํƒ€์ž„์—์„œ ์‹คํ–‰๋˜๋„๋ก Stable Diffusion์„ ์ตœ์ ํ™”ํ•˜๋Š” ๋ฐฉ๋ฒ•์„ ์•Œ๊ณ  ์‹ถ๋‹ค๋ฉด ์ตœ์ ํ™” ํŽ˜์ด์ง€๋ฅผ ์‚ดํŽด๋ณด์„ธ์š”:
- [Optimized PyTorch on GPU](./optimization/fp16)
- [Mac OS with PyTorch](./optimization/mps)
- [ONNX](./optimization/onnx)
- [OpenVINO](./optimization/open_vino)
ํ™•์‚ฐ ๋ชจ๋ธ์„ ๋ฏธ์„ธ์กฐ์ •ํ•˜๊ฑฐ๋‚˜ ํ•™์Šต์‹œํ‚ค๋ ค๋ฉด, [**training section**](./training/overview)์„ ์‚ดํŽด๋ณด์„ธ์š”.
๋งˆ์ง€๋ง‰์œผ๋กœ, ์ƒ์„ฑ๋œ ์ด๋ฏธ์ง€๋ฅผ ๊ณต๊ฐœ์ ์œผ๋กœ ๋ฐฐํฌํ•  ๋•Œ ์‹ ์ค‘์„ ๊ธฐํ•ด ์ฃผ์„ธ์š” ๐Ÿค—.