Outpainting With Automatic Canvas Extension

via “outpainting with context-aware boundary extension”

Open-source image generation — SD3, SDXL, massive ecosystem of LoRAs, ControlNets, runs locally.

Unique: Uses the same inpainting mechanism as object removal but applies it to extend boundaries rather than fill holes. The model uses existing image edges as context to generate coherent continuations. This is more sophisticated than simple tiling or padding but requires iterative application and careful boundary management.

vs others: More flexible than fixed aspect ratio generation and cheaper than hiring artists for manual extension. Weaker than full 3D-based panorama stitching but faster and requires no 3D expertise.