RemBG v1.4

September 15, 2023

RemBG v1.4 is an optimized image background removal model focused on rapid and accurate separation of foreground subjects from background. It uses lightweight segmentation to produce clean alpha masks for visual assets, product photos, and portraits without manual editing.

Remove Background

Fringed Cowboy Boot Product Cutout

import { createClient } from '@runware/sdk'

const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()

const [result] = await client.run({
  model: 'runware:109@1',
  settings: {
    alphaMatting: true,
    alphaMattingBackgroundThreshold: 12,
    alphaMattingErodeSize: 4,
    alphaMattingForegroundThreshold: 242,
    postProcessMask: true,
    returnOnlyMask: false,
    rgba: [
      255,
      255,
      255,
      0
    ]
  },
  inputs: {
    image: 'https://assets.runware.ai/assets/inputs/72454a33-d7b3-4da3-970d-b8c834836750.jpg'
  }
})

import asyncio
import os

from runware import Runware


async def main():
    async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
        results = await client.run({
            "model": "runware:109@1",
            "settings": {
                "alphaMatting": True,
                "alphaMattingBackgroundThreshold": 12,
                "alphaMattingErodeSize": 4,
                "alphaMattingForegroundThreshold": 242,
                "postProcessMask": True,
                "returnOnlyMask": False,
                "rgba": [
                    255,
                    255,
                    255,
                    0
                ]
            },
            "inputs": {
                "image": "https://assets.runware.ai/assets/inputs/72454a33-d7b3-4da3-970d-b8c834836750.jpg"
            }
        })


asyncio.run(main())

curl https://api.runware.ai/v1 \
  -H "Authorization: Bearer $RUNWARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "taskType": "removeBackground",
      "taskUUID": "6541d00b-d8c9-48f1-be40-23ebe70a5bc0",
      "model": "runware:109@1",
      "settings": {
        "alphaMatting": true,
        "alphaMattingBackgroundThreshold": 12,
        "alphaMattingErodeSize": 4,
        "alphaMattingForegroundThreshold": 242,
        "postProcessMask": true,
        "returnOnlyMask": false,
        "rgba": [
          255,
          255,
          255,
          0
        ]
      },
      "inputs": {
        "image": "https://assets.runware.ai/assets/inputs/72454a33-d7b3-4da3-970d-b8c834836750.jpg"
      }
    }
  ]'

runware run runware:109@1 \
  settings.alphaMatting=true \
  settings.alphaMattingBackgroundThreshold=12 \
  settings.alphaMattingErodeSize=4 \
  settings.alphaMattingForegroundThreshold=242 \
  settings.postProcessMask=true \
  settings.returnOnlyMask=false \
  settings.rgba.0=255 \
  settings.rgba.1=255 \
  settings.rgba.2=255 \
  settings.rgba.3=0 \
  inputs.image=https://assets.runware.ai/assets/inputs/72454a33-d7b3-4da3-970d-b8c834836750.jpg

{
  "taskType": "removeBackground",
  "taskUUID": "6541d00b-d8c9-48f1-be40-23ebe70a5bc0",
  "model": "runware:109@1",
  "settings": {
    "alphaMatting": true,
    "alphaMattingBackgroundThreshold": 12,
    "alphaMattingErodeSize": 4,
    "alphaMattingForegroundThreshold": 242,
    "postProcessMask": true,
    "returnOnlyMask": false,
    "rgba": [
      255,
      255,
      255,
      0
    ]
  },
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/72454a33-d7b3-4da3-970d-b8c834836750.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "6541d00b-d8c9-48f1-be40-23ebe70a5bc0",
  "imageUUID": "dca788da-4415-4115-b046-4a5780baee44",
  "imageURL": "https://im.runware.ai/image/os/a09dlim3/ws/5/ii/dca788da-4415-4115-b046-4a5780baee44.png",
  "cost": 0.0038,
  "inputImageUUID": "b771c426-c17d-4e8a-b52c-6fc63f5797c2"
}

Remove Background

Feathered Cabaret Headpiece Portrait

import { createClient } from '@runware/sdk'

const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()

const [result] = await client.run({
  model: 'runware:109@1',
  settings: {
    alphaMatting: true,
    alphaMattingBackgroundThreshold: 12,
    alphaMattingErodeSize: 4,
    alphaMattingForegroundThreshold: 242,
    postProcessMask: true,
    returnOnlyMask: false,
    rgba: [
      255,
      255,
      255,
      0
    ]
  },
  inputs: {
    image: 'https://assets.runware.ai/assets/inputs/9a8c80f0-146a-4678-b103-20c422db2049.jpg'
  }
})

import asyncio
import os

from runware import Runware


async def main():
    async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
        results = await client.run({
            "model": "runware:109@1",
            "settings": {
                "alphaMatting": True,
                "alphaMattingBackgroundThreshold": 12,
                "alphaMattingErodeSize": 4,
                "alphaMattingForegroundThreshold": 242,
                "postProcessMask": True,
                "returnOnlyMask": False,
                "rgba": [
                    255,
                    255,
                    255,
                    0
                ]
            },
            "inputs": {
                "image": "https://assets.runware.ai/assets/inputs/9a8c80f0-146a-4678-b103-20c422db2049.jpg"
            }
        })


asyncio.run(main())

curl https://api.runware.ai/v1 \
  -H "Authorization: Bearer $RUNWARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "taskType": "removeBackground",
      "taskUUID": "3962706f-6f5e-4687-90b5-3c29e272b6d6",
      "model": "runware:109@1",
      "settings": {
        "alphaMatting": true,
        "alphaMattingBackgroundThreshold": 12,
        "alphaMattingErodeSize": 4,
        "alphaMattingForegroundThreshold": 242,
        "postProcessMask": true,
        "returnOnlyMask": false,
        "rgba": [
          255,
          255,
          255,
          0
        ]
      },
      "inputs": {
        "image": "https://assets.runware.ai/assets/inputs/9a8c80f0-146a-4678-b103-20c422db2049.jpg"
      }
    }
  ]'

runware run runware:109@1 \
  settings.alphaMatting=true \
  settings.alphaMattingBackgroundThreshold=12 \
  settings.alphaMattingErodeSize=4 \
  settings.alphaMattingForegroundThreshold=242 \
  settings.postProcessMask=true \
  settings.returnOnlyMask=false \
  settings.rgba.0=255 \
  settings.rgba.1=255 \
  settings.rgba.2=255 \
  settings.rgba.3=0 \
  inputs.image=https://assets.runware.ai/assets/inputs/9a8c80f0-146a-4678-b103-20c422db2049.jpg

{
  "taskType": "removeBackground",
  "taskUUID": "3962706f-6f5e-4687-90b5-3c29e272b6d6",
  "model": "runware:109@1",
  "settings": {
    "alphaMatting": true,
    "alphaMattingBackgroundThreshold": 12,
    "alphaMattingErodeSize": 4,
    "alphaMattingForegroundThreshold": 242,
    "postProcessMask": true,
    "returnOnlyMask": false,
    "rgba": [
      255,
      255,
      255,
      0
    ]
  },
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/9a8c80f0-146a-4678-b103-20c422db2049.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "3962706f-6f5e-4687-90b5-3c29e272b6d6",
  "imageUUID": "5dc78a86-9a26-4bec-974d-36a064686378",
  "imageURL": "https://im.runware.ai/image/os/a09dlim3/ws/5/ii/5dc78a86-9a26-4bec-974d-36a064686378.png",
  "cost": 0.0051,
  "inputImageUUID": "ba0fd9ee-2d0d-442f-9e87-974633f8f040"
}

Remove Background

Pixelated Toy Robot Portrait

import { createClient } from '@runware/sdk'

const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()

const [result] = await client.run({
  model: 'runware:109@1',
  settings: {
    rgba: [
      255,
      255,
      255,
      0
    ],
    postProcessMask: true,
    alphaMatting: true,
    alphaMattingForegroundThreshold: 230,
    alphaMattingBackgroundThreshold: 15,
    alphaMattingErodeSize: 8
  },
  inputs: {
    image: 'https://assets.runware.ai/assets/inputs/835cc7d5-93d0-4af4-a427-2427f170084d.jpg'
  }
})

import asyncio
import os

from runware import Runware


async def main():
    async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
        results = await client.run({
            "model": "runware:109@1",
            "settings": {
                "rgba": [
                    255,
                    255,
                    255,
                    0
                ],
                "postProcessMask": True,
                "alphaMatting": True,
                "alphaMattingForegroundThreshold": 230,
                "alphaMattingBackgroundThreshold": 15,
                "alphaMattingErodeSize": 8
            },
            "inputs": {
                "image": "https://assets.runware.ai/assets/inputs/835cc7d5-93d0-4af4-a427-2427f170084d.jpg"
            }
        })


asyncio.run(main())

curl https://api.runware.ai/v1 \
  -H "Authorization: Bearer $RUNWARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "taskType": "removeBackground",
      "taskUUID": "cdc8c516-310a-4646-b983-9cd3ec6993e4",
      "model": "runware:109@1",
      "settings": {
        "rgba": [
          255,
          255,
          255,
          0
        ],
        "postProcessMask": true,
        "alphaMatting": true,
        "alphaMattingForegroundThreshold": 230,
        "alphaMattingBackgroundThreshold": 15,
        "alphaMattingErodeSize": 8
      },
      "inputs": {
        "image": "https://assets.runware.ai/assets/inputs/835cc7d5-93d0-4af4-a427-2427f170084d.jpg"
      }
    }
  ]'

runware run runware:109@1 \
  settings.rgba.0=255 \
  settings.rgba.1=255 \
  settings.rgba.2=255 \
  settings.rgba.3=0 \
  settings.postProcessMask=true \
  settings.alphaMatting=true \
  settings.alphaMattingForegroundThreshold=230 \
  settings.alphaMattingBackgroundThreshold=15 \
  settings.alphaMattingErodeSize=8 \
  inputs.image=https://assets.runware.ai/assets/inputs/835cc7d5-93d0-4af4-a427-2427f170084d.jpg

{
  "taskType": "removeBackground",
  "taskUUID": "cdc8c516-310a-4646-b983-9cd3ec6993e4",
  "model": "runware:109@1",
  "settings": {
    "rgba": [
      255,
      255,
      255,
      0
    ],
    "postProcessMask": true,
    "alphaMatting": true,
    "alphaMattingForegroundThreshold": 230,
    "alphaMattingBackgroundThreshold": 15,
    "alphaMattingErodeSize": 8
  },
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/835cc7d5-93d0-4af4-a427-2427f170084d.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "cdc8c516-310a-4646-b983-9cd3ec6993e4",
  "imageUUID": "7e745c5e-2a3a-4a44-b9d0-1920c8866d14",
  "imageURL": "https://im.runware.ai/image/os/a13d12/ws/3/ii/7e745c5e-2a3a-4a44-b9d0-1920c8866d14.png",
  "cost": 0.0013,
  "inputImageUUID": "5071606e-5a78-4c28-bde5-66a1534ddde0"
}

Remove Background

Pixel Sprite Character Cutout

import { createClient } from '@runware/sdk'

const client = await createClient({ apiKey: process.env.RUNWARE_API_KEY })
await client.connect()

const [result] = await client.run({
  model: 'runware:109@1',
  settings: {
    rgba: [
      255,
      255,
      255,
      0
    ],
    postProcessMask: true,
    alphaMatting: true,
    alphaMattingForegroundThreshold: 235,
    alphaMattingBackgroundThreshold: 12,
    alphaMattingErodeSize: 4
  },
  inputs: {
    image: 'https://assets.runware.ai/assets/inputs/35b37672-4a53-4bbd-8781-94b3895832d1.jpg'
  }
})

import asyncio
import os

from runware import Runware


async def main():
    async with Runware(api_key=os.environ["RUNWARE_API_KEY"]) as client:
        results = await client.run({
            "model": "runware:109@1",
            "settings": {
                "rgba": [
                    255,
                    255,
                    255,
                    0
                ],
                "postProcessMask": True,
                "alphaMatting": True,
                "alphaMattingForegroundThreshold": 235,
                "alphaMattingBackgroundThreshold": 12,
                "alphaMattingErodeSize": 4
            },
            "inputs": {
                "image": "https://assets.runware.ai/assets/inputs/35b37672-4a53-4bbd-8781-94b3895832d1.jpg"
            }
        })


asyncio.run(main())

curl https://api.runware.ai/v1 \
  -H "Authorization: Bearer $RUNWARE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '[
    {
      "taskType": "removeBackground",
      "taskUUID": "277fb836-9d5c-4b60-b80b-70441b2e97e4",
      "model": "runware:109@1",
      "settings": {
        "rgba": [
          255,
          255,
          255,
          0
        ],
        "postProcessMask": true,
        "alphaMatting": true,
        "alphaMattingForegroundThreshold": 235,
        "alphaMattingBackgroundThreshold": 12,
        "alphaMattingErodeSize": 4
      },
      "inputs": {
        "image": "https://assets.runware.ai/assets/inputs/35b37672-4a53-4bbd-8781-94b3895832d1.jpg"
      }
    }
  ]'

runware run runware:109@1 \
  settings.rgba.0=255 \
  settings.rgba.1=255 \
  settings.rgba.2=255 \
  settings.rgba.3=0 \
  settings.postProcessMask=true \
  settings.alphaMatting=true \
  settings.alphaMattingForegroundThreshold=235 \
  settings.alphaMattingBackgroundThreshold=12 \
  settings.alphaMattingErodeSize=4 \
  inputs.image=https://assets.runware.ai/assets/inputs/35b37672-4a53-4bbd-8781-94b3895832d1.jpg

{
  "taskType": "removeBackground",
  "taskUUID": "277fb836-9d5c-4b60-b80b-70441b2e97e4",
  "model": "runware:109@1",
  "settings": {
    "rgba": [
      255,
      255,
      255,
      0
    ],
    "postProcessMask": true,
    "alphaMatting": true,
    "alphaMattingForegroundThreshold": 235,
    "alphaMattingBackgroundThreshold": 12,
    "alphaMattingErodeSize": 4
  },
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/35b37672-4a53-4bbd-8781-94b3895832d1.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "277fb836-9d5c-4b60-b80b-70441b2e97e4",
  "imageUUID": "0755f8e6-2323-417b-8f6f-962e9cb8877e",
  "imageURL": "https://im.runware.ai/image/os/a24d12/ws/3/ii/0755f8e6-2323-417b-8f6f-962e9cb8877e.png",
  "cost": 0.0013,
  "inputImageUUID": "9cd88089-8856-4e22-9b3a-9622ad153ef1"
}