API Node
- Image
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- Recraft Image to Image
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- Recraft Text to Image
- Recraft Image Inpainting
- Recraft Vectorize Image
- Recraft Style - Digital Illustration
- Recraft Remove Background
- Recraft Style - Logo Raster
- Recraft Controls
- Recraft Replace Background
- Ideogram
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- OpenAI
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Recraft Replace Background - ComfyUI 原生节点文档
Recraft Replace Background - ComfyUI 原生节点文档
自动识别前景主体并替换背景的 Recraft API 节点
Recraft Replace Background 节点能够通过 Recraft 的 API 来智能识别图像中的主体对象,并根据文本描述生成新的背景场景。
参数说明
基本参数
参数 | 类型 | 默认值 | 说明 |
---|---|---|---|
image | 图像 | - | 包含需要保留主体的输入图像 |
prompt | 字符串 | "" | 用于图像生成的提示词 |
n | 整数 | 1 | 要生成的图像数量(1-6) |
seed | 整数 | 0 | 确定节点是否应该重新运行的种子;实际结果与种子无关 |
可选参数
参数 | 类型 | 说明 |
---|---|---|
recraft_style | Recraft Style | 设置生成背景的风格 |
negative_prompt | 字符串 | 图像中不希望出现的元素的可选文本描述 |
输出
输出 | 类型 | 说明 |
---|---|---|
IMAGE | 图像 | 替换背景后的完整图像 |
源码参考
[节点源码 (更新于2025-05-03)]
class RecraftReplaceBackgroundNode:
"""
Replace background on image, based on provided prompt.
"""
RETURN_TYPES = (IO.IMAGE,)
DESCRIPTION = cleandoc(__doc__ or "") # Handle potential None value
FUNCTION = "api_call"
API_NODE = True
CATEGORY = "api node/image/Recraft"
@classmethod
def INPUT_TYPES(s):
return {
"required": {
"image": (IO.IMAGE, ),
"prompt": (
IO.STRING,
{
"multiline": True,
"default": "",
"tooltip": "Prompt for the image generation.",
},
),
"n": (
IO.INT,
{
"default": 1,
"min": 1,
"max": 6,
"tooltip": "The number of images to generate.",
},
),
"seed": (
IO.INT,
{
"default": 0,
"min": 0,
"max": 0xFFFFFFFFFFFFFFFF,
"control_after_generate": True,
"tooltip": "Seed to determine if node should re-run; actual results are nondeterministic regardless of seed.",
},
),
},
"optional": {
"recraft_style": (RecraftIO.STYLEV3,),
"negative_prompt": (
IO.STRING,
{
"default": "",
"forceInput": True,
"tooltip": "An optional text description of undesired elements on an image.",
},
),
},
"hidden": {
"auth_token": "AUTH_TOKEN_COMFY_ORG",
},
}
def api_call(
self,
image: torch.Tensor,
prompt: str,
n: int,
seed,
auth_token=None,
recraft_style: RecraftStyle = None,
negative_prompt: str = None,
**kwargs,
):
default_style = RecraftStyle(RecraftStyleV3.realistic_image)
if recraft_style is None:
recraft_style = default_style
if not negative_prompt:
negative_prompt = None
request = RecraftImageGenerationRequest(
prompt=prompt,
negative_prompt=negative_prompt,
model=RecraftModel.recraftv3,
n=n,
style=recraft_style.style,
substyle=recraft_style.substyle,
style_id=recraft_style.style_id,
)
images = []
total = image.shape[0]
pbar = ProgressBar(total)
for i in range(total):
sub_bytes = handle_recraft_file_request(
image=image[i],
path="/proxy/recraft/images/replaceBackground",
request=request,
auth_token=auth_token,
)
images.append(torch.cat([bytesio_to_image_tensor(x) for x in sub_bytes], dim=0))
pbar.update(1)
images_tensor = torch.cat(images, dim=0)
return (images_tensor, )