demobook

ComfyUI: Iterating and upscaling character variations

ComfyUITry it →Watch full video →Ľudovít Nastišin ·

Demo summary

The demonstration shows how to refine specific outputs by adjusting prompts (e.g., 'extremely angry') and batch-running upscaler nodes to finalize the character sheet.

Step-by-step

  1. Plug the target image into the router nodes for description and generation.
  2. Review the generated description (e.g., skin tone, face shape) to ensure accuracy.
  3. Select only the image generation nodes first to preview variations.
  4. Adjust the text prompt with specific modifiers like 'extremely angry' to refine expressions.
  5. Run the model to generate the new variations.
  6. Select all upscaler nodes once satisfied with the previews.
  7. Execute the upscalers to finalize the character sheet.

Options

  • Crop images within the workflow if the framing is slightly off
  • Run specific selected nodes instead of the entire workflow

Watch out for

  • Ensure the prompt has enough tokens to specifically trigger the desired look or expression

Tips

  • Select only image generation first rather than upscaled versions to save time during iteration
  • Use more descriptive tokens like 'extremely' to push the AI toward more distinct character expressions

Highlights

it was like under two minutes with every single case

All demos from “Consistent AI Characters: The "Sheet Method" (Workflow Included)

  1. 0:313:50Overview of the AI character sheet workflowThe creator walks through a node-based interface (likely Krea or ComfyUI) showing how a reference image, an automated text description, and specific pose/expression prompts are combined to create a character sheet.ComfyUIAI Avatar Generator
  2. 5:033:47Generating character angles and expressions from a reference photoThe user inputs a photo of a woman into the workflow, uses an 'Image Describer' node to generate a prompt, and runs multiple generation nodes to produce profile views, back views, and various facial expressions.ComfyUIAI Person Generator
  3. 8:502:13Iterating and upscaling character variationsCurrentThe demonstration shows how to refine specific outputs by adjusting prompts (e.g., 'extremely angry') and batch-running upscaler nodes to finalize the character sheet.ComfyUIAI Image Upscaler
  4. Watch “Consistent AI Characters: The "Sheet Method" (Workflow Included)” →

AI Image Upscaler

  1. 30:073:41Upscaling images using modelsDemonstrates upscaling a low-resolution 512x512 image using the 4X Ultra Sharp model to add clarity and detail.AI Search
  2. 36:021:32Using Preview Chooser for selective upscalingShows how to use the Image Chooser node to generate a batch of images and selectively progress only one specific image to the upscaler.AI Search
  3. 43:496:52Tiled upscaling with Ultimate SD UpscaleA detailed demo of the Ultimate SD Upscale node, showing how tiled upscaling generates significantly higher facial detail than standard upscaling.AI Search
  4. 2:432:38Generate and upscale images with Flux KontextThe creator demonstrates setting up a basic Flux Kontext workflow in ComfyUI, generating a character image, and then using a KSampler-based upscaler to increase resolution.pixaroma
  5. 9:521:53Upscale an existing image to 4K with PiDThe video demonstrates uploading a landscape photo into a ComfyUI workflow and using the PiD (Pixel Diffusion) model to upscale it to 4096 resolution in under 10 seconds.AI Search
  6. 13:200:38Compare original vs upscaled image using RG3 nodesThe user adds an 'image compare' node by RG3 to the ComfyUI canvas to show a side-by-side slider comparison of the blurry original image versus the sharp PiD upscaled result.AI Search
  7. 14:274:08Generate and upscale images using Zee Image and PiDA demonstration of a combined workflow where Zee Image Turbo generates a 1K image of a red panda which is then automatically passed into the PiD upscaler for a 4K final output.AI Search
  8. 1:491:28Simple non-AI image resizing in ComfyUIThe creator demonstrates a basic 'Upscale Image By' node that performs a standard resolution increase without AI, similar to Photoshop resizing, and uses an RG3 image comparer node to view the results.pixaroma
  9. 3:193:04Upscaling with Neural Network modelsThis clip shows how to use the 'Upscale Image (using Model)' node in ComfyUI with various PTH models like UltraSharp and 8x upscalers to sharpen and reconstruct details.pixaroma
  10. 6:233:22Tiled Diffusion upscaling with Zimage TurboThe creator walks through a complex workflow using Tiled Diffusion and the Zimage Turbo model to upscale images while managing VRAM by processing the image in smaller tiles.pixaroma
  11. 9:451:24Upscaling with Nunchaku Flux ManiaA demonstration of using a modified Flux.1 Dev model (Flux Mania) via Nunchaku nodes to perform a 2x upscale that enhances skin textures and fine details.pixaroma
  12. 11:103:10High-fidelity upscaling with SeedVR2The video shows the setup and execution of the SeedVR2 node pack, demonstrating how to select specific models and adjust resolution for sharp, consistent upscaling results.pixaroma