BiRefNet v1 Base

January 7, 2024

BiRefNet v1 Base is the core model of the BiRefNet family, designed for dichotomous image segmentation. It produces clean foreground–background masks with strong boundary precision by leveraging bilateral reference cues that preserve spatial structure and object integrity across diverse scenes.

Remove Background

Weathered Toy Robot Cutout

Request

{
  "taskType": "removeBackground",
  "taskUUID": "e49aa691-12d5-4e74-881b-1df23bc77a47",
  "outputFormat": "PNG",
  "model": "runware:112@1",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/6510bc3a-41e3-4461-a0e3-59f1240b6522.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "e49aa691-12d5-4e74-881b-1df23bc77a47",
  "imageUUID": "890f9d50-8614-4259-a01e-b77a08364bcb",
  "imageURL": "https://im.runware.ai/image/os/a15d18/ws/4/ii/890f9d50-8614-4259-a01e-b77a08364bcb.png",
  "cost": 0.0006,
  "inputImageUUID": "4a41ffb3-d730-41eb-914a-2cd702ce2361"
}

Remove Background

Ornate Masquerade Feathered Headpiece

Request

{
  "taskType": "removeBackground",
  "taskUUID": "3af04188-f83c-4650-87c0-40afe13e8e07",
  "outputFormat": "PNG",
  "model": "runware:112@1",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/b1a19a69-7506-432d-a720-a6e6eccd3ce3.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "3af04188-f83c-4650-87c0-40afe13e8e07",
  "imageUUID": "94ec8d0e-c30f-40c7-b479-d8ca719f44fd",
  "imageURL": "https://im.runware.ai/image/os/a21d05/ws/4/ii/94ec8d0e-c30f-40c7-b479-d8ca719f44fd.png",
  "cost": 0.0006,
  "inputImageUUID": "5018a301-4691-491a-a2d9-9179b0574cb2"
}

Remove Background

Dewy Mushroom Cluster Cutout

Request

{
  "taskType": "removeBackground",
  "taskUUID": "978ac604-6afd-4d69-b183-f6646a038a5b",
  "model": "runware:112@1",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/58c85004-6b03-4323-a784-9a41e90d74f5.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "978ac604-6afd-4d69-b183-f6646a038a5b",
  "imageUUID": "898efe02-a2cb-4bb6-a039-73c957783355",
  "imageURL": "https://im.runware.ai/image/os/a04d20/ws/5/ii/898efe02-a2cb-4bb6-a039-73c957783355.png",
  "cost": 0.0006,
  "inputImageUUID": "0725e315-e9cb-488d-b5f9-61091394987c"
}

Remove Background

Antique Violin Velvet Case

Request

{
  "taskType": "removeBackground",
  "taskUUID": "c541d870-b291-4cc7-864e-a83064d91c5d",
  "outputFormat": "PNG",
  "model": "runware:112@1",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/38451971-8f48-4d3a-b6ff-f75599c739a8.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "c541d870-b291-4cc7-864e-a83064d91c5d",
  "imageUUID": "3580be88-4e6d-4696-964d-75d6962cfa72",
  "imageURL": "https://im.runware.ai/image/os/a21d05/ws/4/ii/3580be88-4e6d-4696-964d-75d6962cfa72.png",
  "cost": 0.0006,
  "inputImageUUID": "b27998e7-183e-40c4-b1ca-7983a5e2a3fc"
}