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ComfyUI: Image-to-Image generation using Denoise

ComfyUITry it →Watch full video →Sebastian Kamph ·

Demo summary

Demonstrates how the Denoise slider in the KSampler affects the transformation of a source image (cat) into a new subject (dog) based on a prompt.

Step-by-step

  1. Load a source image into the workflow
  2. Enter a text prompt describing the desired subject change
  3. Locate the Denoise slider in the KSampler node
  4. Adjust the Denoise value to control the balance between the source image and the new prompt
  5. Run the generation to see the result

Options

  • Set Denoise to 0 to keep the source image identical
  • Set Denoise to 1 for a 100% new generation unrelated to the source image structure

Watch out for

  • The effective Denoise value varies depending on the specific model being used
  • Setting Denoise too low (e.g., 0.2) may result in no subject change regardless of the prompt

Tips

  • Aim for a Denoise value between 0.5 and 0.7 for most image-to-image tasks
  • Think of Denoise as 'gas' needed to give the AI enough room to change the image
  • Adjust Denoise based on the specific model; Flux models may require higher or lower values than others

All demos from “How to use ComfyUI for beginners.”

  1. 1:360:57Install custom workflows and missing nodes in ComfyUIThe video demonstrates how to drag and drop a JSON workflow file into ComfyUI and use the Manager to identify and install missing custom nodes.ComfyUIAI Image Generator
  2. 3:020:20Search and install models via Model ManagerA walkthrough of using the ComfyUI Model Manager to search for specific AI models, such as ControlNet, and install them directly.ComfyUIAI Image Generator
  3. 3:281:10Running and managing image generation queuesDemonstration of starting a workflow using the 'Run' button, setting up 'Run Instant' for continuous generation, and using 'Run on Change' to trigger generation upon prompt edits.ComfyUIAI Image Generator
  4. 4:590:55Navigating the ComfyUI workspace and UI settingsShows how to use zoom, fit view, pan modes, and toggle link visibility or themes (light/dark mode) within the ComfyUI interface.ComfyUIAI Image Generator
  5. 11:311:49Adding and connecting nodes in ComfyUIThe video demonstrates adding a 'Load Image' node via the library or right-click menu and connecting it to other nodes like 'Save Image' using spaghetti links.ComfyUIAI Image Generator
  6. 19:431:34Converting widgets to inputs in ComfyUIShows how to convert a node's internal settings (like seed) into an external input pin and connect a 'Primitive' node to control it.ComfyUIAI Image Generator
  7. 22:350:32Generating an image with Flux modelDemonstrates a text-to-image generation using the Flux model in ComfyUI, including prompt entry and resolving connection errors.ComfyUIText to Image
  8. 25:032:06Managing seeds and randomizationShows the difference between 'Randomize' and 'Fixed' seed settings in the KSampler to either generate new variations or reproduce the same image.ComfyUIAI Image Generator
  9. 32:382:30Image-to-Image generation using DenoiseCurrentDemonstrates how the Denoise slider in the KSampler affects the transformation of a source image (cat) into a new subject (dog) based on a prompt.ComfyUIImage to Image
  10. 36:450:34Saving images to specific foldersShows how to use the 'Save Image' node and file path syntax to organize output images into custom subfolders.ComfyUIAI Image Generator
  11. Watch “How to use ComfyUI for beginners.” →

Image to Image

  1. 41:391:29Image-to-image generation with denoisingDemonstrates the image-to-image process by loading an existing photo and adjusting the denoising strength to create variations.AI Search
  2. 32:382:30Image-to-Image generation using DenoiseCurrentDemonstrates how the Denoise slider in the KSampler affects the transformation of a source image (cat) into a new subject (dog) based on a prompt.Sebastian Kamph
  3. 1:27:395:06Image-to-Image Workflow with Denoise ControlDemonstration of converting a text-to-image workflow into an image-to-image setup using VAE Encode and adjusting the denoise parameter to control variation.pixaroma
  4. 33:282:46Image-to-image transformation with Z-ImageThe user demonstrates how to modify a ComfyUI workflow to perform image-to-image tasks, converting a 3D animation into a realistic photo using Z-Image Turbo.AI Search
  5. 4:040:41Upload character reference imageThe user shows how to upload a reference image for character replacement or stylization within the ComfyUI workflow.MDMZ
  6. 28:561:50Image-to-Image Workflow in ComfyUIThe demo shows an image-to-image setup using a 'Load Image' node and a VAE Encode node to use an existing image as a structural guide for the K Sampler.Joey /// VP Land
  7. 3:041:18Enhance 3D clay models with Flux and ControlNetThe creator demonstrates using the Flux model in ComfyUI with a Depth ControlNet to transform a gray 3D massing model into a detailed streetcar scene while maintaining structural integrity.Matt Hallett Visual
  8. 8:512:02Image-to-image enhancement with denoisingThe video shows how to use the 'denoising' strength in ComfyUI to blend a base 3D rendering with AI-generated details like autumn trees and realistic people.Matt Hallett Visual
  9. 9:050:49Image-to-image generation with FLUX.1 KontextDemonstration of uploading an image and using a natural language prompt to transform a character's appearance while maintaining consistency using FLUX.1 Kontext.AI様の下僕
  10. 9:314:03Image-to-image denoising with FluxThe user demonstrates how Flux handles image-to-image tasks by adjusting the denoise strength from 0.4 to 1.0 to show how it differs from Stable Diffusion.Artificial Images
  11. 2:450:14Analyzing reference images for Ghost Mask modeThe video shows the process of using the 'Analyze' button to generate a short description of a subject for the Ghost Mask reference mode.RedShade
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