runflow/outpaint

Overview

Outpaint (Expand) grows the canvas of an image with AI-generated content

that matches the existing scene. Specify how many percent to expand on each

of the four edges; the pipeline runs Flux-fill plus multi-stage upscaling and

returns a coherent result up to 4096px on the long side.

How it works

Provide an image URL and four expand-percent values (0–80 each). The pipeline

generates plausible scene continuations, multiplies through Flux fill, then

applies a tea-cached upscaler pass for sharpness.

Common use cases

• ●Aspect-ratio adaptation — turn 4:3 into 16:9 without cropping the subject
• ●Scene extension — add headroom or footroom for typography
• ●Reposition for layouts — extend the canvas instead of cropping

API call shape

```json

POST /v1/models/runflow/outpaint/runs

{ "image_url": "https://…/photo.jpg",

"expand_top": 30, "expand_bottom": 20,

"expand_left": 20, "expand_right": 20 }

```