Comfyui_StrypeConv

A ComfyUI custom node that blends a natural image with a stripe pattern image using pixel-wise multiplication, producing a geometric composite output.

How It Works

The node multiplies each pixel of the natural image by the corresponding pixel of the stripe image:

output = natural_image × stripe_image

This is equivalent to convolution in the frequency domain — the FFT of the result is the convolution of the two input spectra.

Installation

Clone this repository into your ComfyUI custom_nodes directory:

cd /path/to/ComfyUI/custom_nodes
git clone https://github.com/yourname/Comfyui_StrypeConv

Then restart ComfyUI.

No additional dependencies are required beyond what ComfyUI already provides (numpy, torch, Pillow).

Node

Stripe Blend (Natural × Stripe)

Found under image → postprocessing in the node browser.

Port	Type	Description
natural_image	IMAGE (input)	The source image (photo, render, etc.)
stripe_image	IMAGE (input)	The stripe pattern to multiply with
blended_image	IMAGE (output)	Pixel-wise product of the two inputs

Notes:

• Both inputs are converted to grayscale before multiplication.
• If the two images differ in size, the stripe image is resized to match the natural image using Lanczos resampling.
• The output is a grayscale image returned as an RGB tensor compatible with all standard ComfyUI image nodes.

Standalone CLI

A command-line version is also included for use outside of ComfyUI.

# Use an existing stripe image
python stripe_blend.py natural.jpg stripe.jpg output.png

# Auto-generate a sine-wave stripe (frequency=0.05, angle=45°)
python stripe_blend.py natural.jpg output.png --freq 0.05 --angle 45

# Also save an FFT spectrum panel
python stripe_blend.py natural.jpg stripe.jpg output.png --fft

Argument	Description	Default
natural	Path to the natural image	required
stripe	Path to the stripe image	optional
output	Output file path	output_blend.png
--freq	Stripe frequency when auto-generating	0.05
--angle	Stripe angle in degrees when auto-generating	45
--fft	Save an additional FFT spectrum panel	off

License

MIT