Ways: new scene, same character
change_scene cuts the character out of a handed picture (inspyrenet-rembg), inverts it and redraws only the rest at denoise 1.0 from the prompt's new scene; GrowMask lets 6 px of the edge be redrawn for the seam. Tried on an RTX 4050 6 GB with SDXL (Illustrious) 832x1216: about 30 s, the character kept, the forest replaced by a night street. A picture handed to a block may be written "name.png [output]" as Load Image shows it. Two block descriptions are shorter so begin_task stays under 4000 characters. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
DemonGatanjieu
co-authored by
Claude Opus 5.5
Claude Opus 5.5
parent
d1d53cfc63
commit
d95b2b309f
@@ -2,6 +2,9 @@
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## v1.63.0 — unreleased
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- 新做法 **换场景·人物不变**：你递给 AI 一张图，AMB 自动抠出人物（inspyrenet-rembg），只重画人物以外的地方，AI 在提示词里写新场景；人物边缘留 6 像素一起重画，接缝更自然。实测 RTX 4050 6GB、SDXL 832×1216 约 30 秒。人物身上的光还是原图的光，换到光线差别很大的场景时看得出来（以后可以加重新打光）。AI 递给做法的图也认 `名字.png [output]` 这种写法了。
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- New way **New scene, same character**: from a picture handed to the AI, the character is cut out (inspyrenet-rembg) and only the rest is drawn anew from the prompt's new scene; 6 px of its edge are redrawn too for the seam. About 30 s for SDXL 832×1216 on an RTX 4050 6 GB. The character keeps the old picture's light, which shows in a very differently lit scene (relighting may come later). A picture handed to a block may also be written `name.png [output]`.
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- AI 有了现成的做法可以照着用（参考做法）：从擅长这些活的工作流里提炼出来的几块节点，AI 说一声用哪块，AMB 就在画布上搭好、接进你的工作流里，一次调用，不用 AI 一个个节点地搭。AI 开工时会收到这份清单，每块一行。
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- **局部重绘·裁切缝合**：把圈出的地方连同周围一圈一起裁出来，放大到 1024 重画，再缝回原图，别处一点不动。AMB 顺手把采样强度调到 0.75，并提醒 AI 把提示词改成只写这块地方（比如“一只手，五根手指”），不然它会把整张图的内容（比如一整个人）画进这一小块里。需要节点包 ComfyUI-Inpaint-CropAndStitch。
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- **局部重绘（官方节点）**：没装上面那个包时用它，只用 ComfyUI 自带的节点。
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@@ -149,6 +149,8 @@ def to_input(image):
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from .mcp_tools import _resolve_folder_image
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rel = str(image or "").replace("\\", "/").strip("/")
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if rel.endswith(" [output]"): # ComfyUI's mark for an output picture, as Load Image shows it
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rel = rel[: -len(" [output]")]
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try:
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return _resolve_folder_image(rel, "input")[0]
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except ToolError:
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@@ -0,0 +1,125 @@
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{
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"job": "repaint",
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"rank": 4,
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"short": "new background",
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"title": {
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"zh": "换场景·人物不变",
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"en": "New scene, same character"
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},
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"about": {
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"zh": "你递给 AI 一张图，AMB 自动抠出人物，只重画人物以外的地方：AI 在提示词里写新场景，人物原样留下。人物边缘留几像素一起重画，让新背景和人物接得上。",
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"en": "From a picture you hand the AI, the character is cut out automatically and everything else is drawn anew: the prompt says the new scene, the character stays as it was. A few pixels of its edge are redrawn too, so it sits in the new scene."
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},
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"source": {
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"zh": "常见的“抠图换背景”做法：inspyrenet-rembg 抠人物，反选成背景，用 ComfyUI 自带的局部重绘节点只重画背景",
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"en": "The common cut-out-and-replace-the-background way: inspyrenet-rembg finds the character, its inverse is the background, ComfyUI's own inpainting nodes redraw only that"
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},
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"packs": {
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"InspyrenetRembg": "comfyui-inspyrenet-rembg"
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},
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"takes": "picture",
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"nodes": {
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"picture": {
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"class_type": "LoadImage",
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"inputs": {
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"image": "$image"
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}
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},
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"cut": {
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"class_type": "InspyrenetRembg",
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"inputs": {
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"image": [
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"picture",
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0
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],
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"torchscript_jit": "default"
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}
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},
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"background": {
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"class_type": "InvertMask",
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"inputs": {
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"mask": [
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"cut",
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1
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]
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}
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},
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"edge": {
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"class_type": "GrowMask",
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"inputs": {
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"mask": [
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"background",
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0
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],
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"expand": 6,
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"tapered_corners": true
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}
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},
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"soft": {
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"class_type": "DifferentialDiffusion",
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"inputs": {
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"model": [
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"$sampler.model",
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"*"
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]
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},
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"wire_to": "$sampler"
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},
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"encode": {
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"class_type": "VAEEncode",
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"inputs": {
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"pixels": [
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"picture",
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0
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],
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"vae": [
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"$decode.vae",
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"*"
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]
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}
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},
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"area": {
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"class_type": "SetLatentNoiseMask",
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"inputs": {
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"samples": [
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"encode",
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0
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],
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"mask": [
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"edge",
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0
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]
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},
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"wire_to": "$sampler"
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},
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"look": {
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"class_type": "PreviewImage",
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"inputs": {
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"images": [
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"cut",
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0
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]
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}
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}
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},
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"roles": {
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"sampler": {
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"denoise": 1.0
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}
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},
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"after": "Write the new scene in the prompt and keep the character's own words (who, hair, clothes) so its edge fits, then run_workflow. The picture's size is the drawing's: the empty latent is no longer used. The kept character (cut out) is among the run's previews: if part of it is missing or the old background clings to it, say so; a halo at its edge: raise the GrowMask expand (6) a little.",
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"notes": "Denoise 1.0: the background is drawn anew, not changed. GrowMask lets the background reach 6 px into the character so the seam is redrawn.",
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"models": [],
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"tested": {
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"gpu": "RTX 4050 Laptop",
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"vram_gb": 6,
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"date": "2026-10-28",
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"runs": [
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{
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"model": "SDXL (Illustrious)",
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"size": "832×1216",
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"seconds": 30
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}
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]
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}
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}
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@@ -1,7 +1,7 @@
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{
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"job": "upscale",
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"rank": 2,
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"short": "1.25×, held by a tile ControlNet, more detail",
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"short": "1.25×, tile-held, more detail",
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"title": {
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"zh": "平铺放大",
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"en": "Upscale held by tile"
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@@ -57,7 +57,7 @@ class BlockTests(unittest.TestCase):
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self.assertLess(len(" ".join(everything.values())), 900, "small: it goes with begin_task")
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with mock.patch.object(reference_blocks, "DIRECTORY_CHARS", 200):
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names = reference_blocks.directory(EVERYTHING)
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self.assertEqual(names[reference_blocks.JOBS["repaint"]], "inpaint_crop_stitch, inpaint_lanpaint, inpaint_basic",
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self.assertEqual(names[reference_blocks.JOBS["repaint"]], "inpaint_crop_stitch, inpaint_lanpaint, inpaint_basic, change_scene",
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"too many to say each: the names alone")
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def test_a_block_turned_off_is_not_offered_and_cannot_be_built(self):
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@@ -288,6 +288,7 @@ class ReferencePictureTests(unittest.TestCase):
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mock.patch.object(folders, "get_input_directory", return_value=input_dir):
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name = ai_pictures.to_input("ai_inbox/ref.png")
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self.assertEqual(ai_pictures.to_input("ai_inbox\\ref.png"), name, "the same picture, the same file")
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self.assertEqual(ai_pictures.to_input("ai_inbox/ref.png [output]"), name, "as Load Image names an output picture")
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self.assertEqual(ai_pictures.to_input("mine.png"), "mine.png")
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with self.assertRaises(ToolError):
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ai_pictures.to_input("ai_inbox/gone.png")
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