ComfyUI-Image-Toolkit

Custom Node Pack for ComfyUI

This node pack provides convenient tools for image processing and transformation.

Features

This pack includes the following nodes:

BrightnessTransparency

Adjusts transparency based on brightness. Bright areas become transparent, while dark areas remain opaque.

AlphaToGrayscale

Converts alpha channel (transparency) to grayscale values. Functions as the inverse transformation of BrightnessTransparency, restoring brightness information that was expressed as transparency back to grayscale images.

AlphaFlatten

Flattens images with alpha channels by compositing them against a white background. Transparent areas are composited with white background and output as RGB images without transparency.

BinarizeImage

Binarizes images. Areas brighter than the specified threshold become white (1.0), while darker areas become black (0.0).

BinarizeImageUsingOtsu

Automatically binarizes images using Otsu's binarization algorithm. Automatically calculates the optimal threshold and separates light and dark areas in the image.

RemoveWhiteBackgroundNoise

Removes noise mixed in white backgrounds. Performs binarization with the specified threshold and replaces white background areas with pure white to remove noise.

GrayscaleImage

Converts color images to grayscale. Processes RGB values uniformly to generate grayscale images.

AntialiasingImage

Applies antialiasing effects to images. Smooths edges by first upscaling the image and then returning it to the original size.

Installation

Recommended Method

• Install using ComfyUI-Manager.

Manual Installation

1. Navigate to the ComfyUI/custom_nodes directory.
2. Clone the repository with the following command:

   git clone https://github.com/your-username/ComfyUI-Image-Toolkit
   cd ComfyUI-Image-Toolkit
   

Usage

1. Launch ComfyUI.
2. Look for the "ComfyUI-Image-Toolkit" category in the node browser.
3. Add the required nodes to your workflow and use them.

License

GPL-3.0 license