Extensions/ComfyUI-FFT-2D
ComfyUI Extension

ComfyUI-FFT-2D

2D frequency-domain image processing nodes for ComfyUI.

By NobutakaKuroki·Created about a month ago·Updated about a month ago· 1
NobutakaKuroki/ComfyUI-FFT-2D
Nodes14
On cloudLocal install
Categoryfft
Stars1
Updatedabout a month ago

Nodes (14)

CZP (Generate)

A zone plate, on demand

fft
FFT Add

Add two spectrums together to recombine what you split

fft
FFT-Based Resize (Crop)

Resize in frequency space and see exactly what resampling does

fft
FFT Crossover (Low/High)

Split your image into soft and sharp halves

fft
FFT Divide (Wiener)

Wiener deconvolution, the closest thing this pack has to magic

fft
FFT Graphic EQ (5-band)

Five EQ sliders for your image, the way you'd mix audio

fft
FFT Magnitude Preview

The preview node that makes FFT less abstract

fft
FFT Multiply

Multiply two spectrums and get a blur

fft
FFT Phase Preview

The phase spectrum, painted in color so it's actually readable

fft
FFT Radial Mask (Generate)

Build your own low-pass or high-pass filter, then multiply it in

fft
FFT Subtract

Pull one frequency band out of another

fft
Image FFT (2D)

Turn any image into something you can edit like audio

fft
Image IFFT (2D)

Turn a spectrum back into a picture

fft
PSF Normalize (Auto-center)

The silent fixer that stops your convolutions shifting and blowing out

fft
Readme

ComfyUI-FFT-2D

FFT-based image processing nodes for ComfyUI.

Overview

This package provides frequency-domain image processing nodes for ComfyUI, including FFT/IFFT transforms, frequency filters, convolution, deconvolution, spectrum visualization, and educational sample workflows.

Features

  • 2D FFT / IFFT
  • Frequency-domain filtering
  • FFT-based image resize
  • Low / High frequency crossover
  • 5-band graphic equalizer
  • Frequency masking
  • Convolution and Wiener deconvolution
  • Magnitude and phase preview

Included Nodes

Transform

  • Image FFT (2D)
  • Image IFFT (2D)

Filters

  • FFT Based Resize
  • FFT Crossover (Low/High)
  • FFT Graphic EQ (5-band)
  • FFT Radial Mask (Generate)

Math

  • FFT Add
  • FFT Subtract
  • FFT Multiply
  • FFT Divide (Wiener)

Preview

  • FFT Magnitude Preview
  • FFT Phase Preview

Util

  • PSF Normalize (Auto-center)
  • CZP (Generate)

Sample Workflows

Sample input images are included in the examples folder. Copy them to your ComfyUI input folder.

Lesson 1. FFT → IFFT

Workflow1

Lesson 2. FFT-based Resize

Workflow2

Lesson 3. Band-pass Filter

Workflow3

Lesson 4. Low / High Frequency Split

Workflow4

Lesson 5. Frequency Masking

Workflow5

Lesson 6. Convolution

Workflow6

Lesson 7. Deconvolution

Workflow7

Installation

Clone this repository into your ComfyUI custom_nodes folder.

ComfyUI/
└── custom_nodes/
    └── comfyui-fft-2d/

Restart ComfyUI after installation.

FREQUENCY Data Type

This node pack introduces a new custom data type:

IMAGE
   ↓ FFT
FREQUENCY
   ↓ processing
IMAGE

The zero-frequency component is always located at the center of the spectrum.

License

MIT License