Add flux2-bg-inpaint API workflow

workflows/api/flux2-bg-inpaint.json

@@ -0,0 +1,333 @@
+{
+  "1": {
+    "_meta": {
+      "title": "Load Flux2 Klein"
+    },
+    "class_type": "UNETLoader",
+    "inputs": {
+      "unet_name": "flux-2-klein-9b.safetensors",
+      "weight_dtype": "default"
+    }
+  },
+  "10": {
+    "_meta": {
+      "title": "Background prompt"
+    },
+    "class_type": "CLIPTextEncode",
+    "inputs": {
+      "clip": [
+        "2",
+        0
+      ],
+      "text": "sharp photorealistic background, same scene, evenly lit, uniform soft lighting matching the subject, no added shadows, no vignetting, crisp focus, fine natural texture, clean detail, no blur, no artifacts, high detail, 4k"
+    }
+  },
+  "11": {
+    "class_type": "ReferenceLatent",
+    "inputs": {
+      "conditioning": [
+        "10",
+        0
+      ],
+      "latent": [
+        "6",
+        0
+      ]
+    }
+  },
+  "12": {
+    "_meta": {
+      "title": "Negative (zeroed)"
+    },
+    "class_type": "ConditioningZeroOut",
+    "inputs": {
+      "conditioning": [
+        "10",
+        0
+      ]
+    }
+  },
+  "13": {
+    "class_type": "CFGGuider",
+    "inputs": {
+      "cfg": 1.0,
+      "model": [
+        "1",
+        0
+      ],
+      "negative": [
+        "12",
+        0
+      ],
+      "positive": [
+        "11",
+        0
+      ]
+    }
+  },
+  "14": {
+    "class_type": "Flux2Scheduler",
+    "inputs": {
+      "height": [
+        "5",
+        2
+      ],
+      "steps": 8,
+      "width": [
+        "5",
+        1
+      ]
+    }
+  },
+  "15": {
+    "class_type": "KSamplerSelect",
+    "inputs": {
+      "sampler_name": "euler"
+    }
+  },
+  "16": {
+    "class_type": "RandomNoise",
+    "inputs": {
+      "noise_seed": 156680208700286
+    }
+  },
+  "17": {
+    "class_type": "SamplerCustomAdvanced",
+    "inputs": {
+      "guider": [
+        "13",
+        0
+      ],
+      "latent_image": [
+        "9",
+        0
+      ],
+      "noise": [
+        "16",
+        0
+      ],
+      "sampler": [
+        "15",
+        0
+      ],
+      "sigmas": [
+        "24",
+        1
+      ]
+    }
+  },
+  "18": {
+    "class_type": "VAEDecode",
+    "inputs": {
+      "samples": [
+        "17",
+        0
+      ],
+      "vae": [
+        "3",
+        0
+      ]
+    }
+  },
+  "19": {
+    "_meta": {
+      "title": "Person keep mask (grow+feather)"
+    },
+    "class_type": "GrowMaskWithBlur",
+    "inputs": {
+      "blur_radius": 12.0,
+      "decay_factor": 1.0,
+      "expand": 6,
+      "fill_holes": true,
+      "flip_input": false,
+      "incremental_expandrate": 0.0,
+      "lerp_alpha": 1.0,
+      "mask": [
+        "7",
+        1
+      ],
+      "tapered_corners": true
+    }
+  },
+  "2": {
+    "class_type": "CLIPLoader",
+    "inputs": {
+      "clip_name": "qwen_3_8b_fp8mixed.safetensors",
+      "device": "default",
+      "type": "flux2"
+    }
+  },
+  "20": {
+    "_meta": {
+      "title": "Resize to original size"
+    },
+    "class_type": "ImageResizeKJ",
+    "inputs": {
+      "crop": "disabled",
+      "divisible_by": 0,
+      "get_image_size": [
+        "4",
+        0
+      ],
+      "height": 1024,
+      "image": [
+        "18",
+        0
+      ],
+      "keep_proportion": false,
+      "upscale_method": "lanczos",
+      "width": 1024
+    }
+  },
+  "21": {
+    "_meta": {
+      "title": "Original person over new background"
+    },
+    "class_type": "ImageCompositeMasked",
+    "inputs": {
+      "destination": [
+        "20",
+        0
+      ],
+      "mask": [
+        "19",
+        0
+      ],
+      "resize_source": false,
+      "source": [
+        "4",
+        0
+      ],
+      "x": 0,
+      "y": 0
+    }
+  },
+  "22": {
+    "_meta": {
+      "title": "Save Image"
+    },
+    "class_type": "SaveImage",
+    "inputs": {
+      "filename_prefix": "flux2-bg-inpaint",
+      "images": [
+        "21",
+        0
+      ]
+    }
+  },
+  "24": {
+    "_meta": {
+      "title": "partial denoise"
+    },
+    "class_type": "SplitSigmasDenoise",
+    "inputs": {
+      "denoise": 1.0,
+      "sigmas": [
+        "14",
+        0
+      ]
+    }
+  },
+  "3": {
+    "class_type": "VAELoader",
+    "inputs": {
+      "vae_name": "flux2-vae.safetensors"
+    }
+  },
+  "4": {
+    "_meta": {
+      "title": "Main Image"
+    },
+    "class_type": "LoadImage",
+    "inputs": {
+      "image": "example.png"
+    }
+  },
+  "5": {
+    "_meta": {
+      "title": "Fit to /16"
+    },
+    "class_type": "ImageResizeKJ",
+    "inputs": {
+      "crop": "disabled",
+      "divisible_by": 16,
+      "height": 0,
+      "image": [
+        "4",
+        0
+      ],
+      "keep_proportion": false,
+      "upscale_method": "lanczos",
+      "width": 0
+    }
+  },
+  "6": {
+    "class_type": "VAEEncode",
+    "inputs": {
+      "pixels": [
+        "5",
+        0
+      ],
+      "vae": [
+        "3",
+        0
+      ]
+    }
+  },
+  "7": {
+    "_meta": {
+      "title": "Segment PERSON (SAM3)"
+    },
+    "class_type": "SAM3Segment",
+    "inputs": {
+      "background": "Alpha",
+      "confidence_threshold": 0.5,
+      "device": "Auto",
+      "image": [
+        "4",
+        0
+      ],
+      "invert_output": false,
+      "mask_blur": 0,
+      "mask_offset": 0,
+      "max_segments": 0,
+      "output_mode": "Merged",
+      "prompt": "person",
+      "segment_pick": 0,
+      "unload_model": false
+    }
+  },
+  "8": {
+    "_meta": {
+      "title": "Background mask (inverted)"
+    },
+    "class_type": "GrowMaskWithBlur",
+    "inputs": {
+      "blur_radius": 8.0,
+      "decay_factor": 1.0,
+      "expand": -4,
+      "fill_holes": true,
+      "flip_input": false,
+      "incremental_expandrate": 0.0,
+      "lerp_alpha": 1.0,
+      "mask": [
+        "7",
+        1
+      ],
+      "tapered_corners": true
+    }
+  },
+  "9": {
+    "class_type": "SetLatentNoiseMask",
+    "inputs": {
+      "mask": [
+        "8",
+        1
+      ],
+      "samples": [
+        "6",
+        0
+      ]
+    }
+  }
+}