ComfyUI: Combine image references for furniture placement

ComfyUI Try it →Watch full video →Urban Decoders · Aug 2025

Demo summary

Using the image stitch node in ComfyUI, the creator demonstrates how to take an empty room and populate it with furniture from a second reference image using Flux Kontext.

Step-by-step

Activate the second image slot by selecting it and pressing Ctrl+B.
Upload the base scene (e.g., an empty room) to the first image slot.
Upload the reference furniture image to the second image slot.
Connect both to the Image Stitch node.
Select the stitch direction (side-by-side or top-and-bottom) in the node settings.
Manually set the resolution and aspect ratio in the Empty Latent Image node to match the original base image.
Enter a prompt describing the furniture from the second image being placed into the first scene.
Run the workflow to generate the combined image.

Options

Toggle image slots on and off using Ctrl+B
Switch between horizontal or vertical image stitching directions

Watch out for

You must manually set the resolution in the Empty Latent Image node or it will use the combined aspect ratio of both images, which is incorrect for the output.

Tips

Experiment with different stitch directions (horizontal vs vertical) to see how it affects the final composition.
If colors or details don't match perfectly (e.g., chairs changing color), continue tweaking the prompts until you get the desired result.

Highlights

“it has done a great job at keeping the original scene”

All demos from “Flux Kontext – 10 Creative AI Use Cases EXPLAINED for Design and Architecture”

0:361:56Creative replacement with Flux KontextThe user demonstrates how to change a specific part of an image, such as replacing a building entrance with a glass door, using the Flux Kontext model in ComfyUI while maintaining the original scene context.ComfyUI· AI Inpainting
3:241:56Combine image references for furniture placementCurrentUsing the image stitch node in ComfyUI, the creator demonstrates how to take an empty room and populate it with furniture from a second reference image using Flux Kontext.ComfyUI· AI Image Combiner
5:200:53Change season to winter in architectural scenesThe demonstration shows how to use a text prompt to transform a summer architectural shot into a winter scene with snow on rooftops and trees using Flux Kontext.ComfyUI· AI Inpainting
6:130:34Day to night time-of-day transformationThe creator shows how to prompt Flux Kontext to change a daytime architectural shot into an evening scene with ambient lighting.ComfyUI· AI Relighting
6:471:52Selective inpainting with crop and stitchUsing the 'ComfyUI inpaint crop and stitch' nodes, the user demonstrates masking a specific window area to insert a glowing LED digital facade.ComfyUI· AI Inpainting
8:540:42Style transfer to watercolor paintingThe video shows how to use a reference image to transform a realistic house photo into a watercolor painting style using Flux Kontext.ComfyUI· AI Style Transfer
11:001:54Applying LoRAs for line drawings and Lego stylesThe user demonstrates stacking LoRA models in ComfyUI to transform buildings into line drawings or Lego-style structures using Flux Kontext.ComfyUI· AI Style Transfer
12:540:41Editing text on shop frontsThe demonstration shows how to use Flux Kontext to change specific text on a shop sign while maintaining the original font style and position.ComfyUI· AI Inpainting
14:250:55Applying texture references to 3D objectsThe video demonstrates applying a tiled pattern texture from one image onto a white sofa in another image, effectively performing AI-based UV mapping.ComfyUI· AI Texture Generator
Watch “Flux Kontext – 10 Creative AI Use Cases EXPLAINED for Design and Architecture” →

AI Image Combiner

11:131:26Combine two images using Image StitchThe tutorial demonstrates using the Image Stitch node to combine two separate reference images (a woman and a bunny) into a single scene using Flux Kontext.pixaroma
8:021:24Merging multiple characters with Image ConcatenateThe video demonstrates using an 'Image Concatenate' node to combine two different reference images, allowing Flux Kontext to generate a single scene featuring both characters walking together.Sebastian Kamph
10:260:54Merging two characters with Kontext Dev Grouped workflowThe video shows the 'grouped' workflow in ComfyUI, where two separate character images are referenced to generate a single composite image of them hugging.AI様の下僕
3:241:56Combine image references for furniture placementCurrentUsing the image stitch node in ComfyUI, the creator demonstrates how to take an empty room and populate it with furniture from a second reference image using Flux Kontext.Urban Decoders