MODEL ID runware:112@2

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BiRefNet v1 Base – COD

January 7, 2024

This BiRefNet variant is specialized for camouflaged object detection, targeting objects that closely blend with their surroundings. It enhances subtle boundary contrast and improves detection reliability in low-visibility and texture-confusing scenarios.

API Options

Platform-level options for task execution and delivery.

taskType string required value: removeBackground: Identifier for the type of task being performed

taskUUID string required UUID v4: UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

outputType string default: URL: Image output type.

Allowed values 3 values

outputFormat string default: JPG

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

`JPG`: Best for photorealistic images with smaller file sizes (no transparency).
`PNG`: Lossless compression, supports high quality and transparency (alpha channel).
`WEBP`: Modern format providing superior compression and transparency support.

**Transparency**: If you are using features like background removal or LayerDiffuse that require transparency, you must select a format that supports an alpha channel (e.g., `PNG`, `WEBP`, `TIFF`). `JPG` does not support transparency.

Allowed values 3 values

outputQuality integer min: 20 max: 99 default: 95: Compression quality of the output. Higher values preserve quality but increase file size.

webhookURL string URI

Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

Learn more 1 resource

Webhooks
PLATFORM

deliveryMethod string default: sync

Determines how the API delivers task results.

Allowed values 2 values

: Returns complete results directly in the API response.
: Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.

Learn more 1 resource

Task Polling
PLATFORM

uploadEndpoint string URI

Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

Common use cases:

Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
CDN integration: Upload to content delivery networks for immediate distribution.

// S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg

The content data will be sent as the request body to the specified URL when generation is complete.

ttl integer min: 60: Time-to-live (TTL) in seconds for generated content. Only applies when outputType is URL.

includeCost boolean default: false: Include task cost in the response.

Inputs

Input resources for the task (images, audio, etc). These must be nested inside the inputs object.

inputs » image image string required: Image input (UUID, URL, Data URI, or Base64).

Generation Parameters

Core parameters for controlling the generated content.

model string required value: runware:112@2

Identifier of the model to use for generation.

Learn more 3 resources

taskType string required value: removeBackground: Type of the task.

taskUUID string required UUID v4: UUID of the task.

imageUUID string required UUID v4: UUID of the output image.

imageURL string URI: URL of the output image.

imageBase64Data string: Base64-encoded image data.

imageDataURI string URI: Data URI of the output image.

cost float: Task cost in USD. Present when includeCost is set to true in the request.

Image to Image

Pixelated Marsh Heron Silhouette

Request

{
  "taskType": "removeBackground",
  "taskUUID": "d27ab86a-a180-4276-9f35-b9d9dbbbd00e",
  "model": "runware:112@2",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/c43efb44-a76e-4781-8781-542726b2ad84.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "d27ab86a-a180-4276-9f35-b9d9dbbbd00e",
  "imageUUID": "d62161cb-1e31-4159-94cb-8e7cc1323459",
  "imageURL": "https://im.runware.ai/image/os/a10d08/ws/3/ii/d62161cb-1e31-4159-94cb-8e7cc1323459.png",
  "cost": 0.0006,
  "inputImageUUID": "3e5a2b2c-88b5-463d-93c8-85bb5e098c40"
}

Image to Image

Pixelated Forest Moth Cleanup

Request

{
  "taskType": "removeBackground",
  "taskUUID": "bcad53d5-424c-4c86-ab99-055e2d05cd9e",
  "model": "runware:112@2",
  "inputs": {
    "image": "https://assets.runware.ai/assets/inputs/7b6e3f72-334c-45f3-b6e9-47d1ac08d90d.jpg"
  }
}

Response

{
  "taskType": "imageBackgroundRemoval",
  "taskUUID": "bcad53d5-424c-4c86-ab99-055e2d05cd9e",
  "imageUUID": "a3969ffa-ec7f-495f-b559-348da42aa36b",
  "imageURL": "https://im.runware.ai/image/os/a18d05/ws/4/ii/a3969ffa-ec7f-495f-b559-348da42aa36b.png",
  "cost": 0.0006,
  "inputImageUUID": "40536e5e-a731-40eb-90fc-0440be0b73f8"
}