ComfyUI-Image-Filters

Image and matte filtering nodes for ComfyUI

latent/filters/*
image/filters/*
mask/filters/*

Two install batch files are provided, install.bat which only installs requirements, and import_error_install.bat, which uninstalls all versions of opencv-python before reinstalling only the correct version, opencv-contrib-python (use this if you get import errors relating to opencv or cv2, which are caused by having multiple versions or the wrong version of opencv installed.)

Nodes

Alpha Clean

Clean up holes and near-solid areas in a matte.

Alpha Matte

Takes an image and alpha or trimap, and refines the edges with closed-form matting. Optionally extracts the foreground and background colors as well. Good for cleaning up SAM segments or hand drawn masks.

Blur Image (Fast)

Blurs images using opencv gaussian blur, which is >100x faster than comfy image blur. Supports larger blur radius, and separate x/y controls.

Blur Mask (Fast)

Same as Blur Image (Fast) but for masks instead of images.

Dilate/Erode Mask

Dilate or erode masks, with either a box or circle filter.

Enhance Detail

Increase or decrease details in an image or batch of images using a guided filter (as opposed to the typical gaussian blur used by most sharpening filters.)

Guided Filter Alpha

Use a guided filter to feather edges of a matte based on similar RGB colors. Works best with a strong color separation between FG and BG.

Remap Range

Fits the color range of an image to a new blackpoint and whitepoint (clamped). Useful for clamping or thresholding soft mattes.

Clamp Outliers

Clamps latents that are more than n standard deviations away from 0. Could help with fireflies or stray noise that disrupt the VAE decode.

AdaIN Latent/Image

Normalizes latents/images to the mean and std dev of a reference input. Useful for getting rid of color shift from high denoise strength, or matching color to a reference in general.

Batch Normalize Latent/Image

Normalizes each frame in a batch to the overall mean and std dev, good for removing overall brightness flickering.

Difference Checker

Absolute value of the difference between inputs, with a multiplier to boost dark values for easier viewing. Alternative to the vanilla merge difference node, which is only a subtraction without the abs()

TODO:

• bilateral filter image for single frame denoise
• temporal filters for video denoise
• deconvolution