Nodetool Image Library

This package provides a set of reusable nodes for Nodetool. The nodes are implemented using nodetool-core and can be used inside the Nodetool UI or in custom workflows.

Node Catalog

Pillow Operations

• Blend – blend two images with adjustable alpha.
• Composite – composite two images using a mask.

Drawing

• Background – create a blank image of a given size and color.
• RenderText – draw text on an image.
• GaussianNoise – generate an image filled with Gaussian noise.

Enhance

• AutoContrast – automatically adjust contrast.
• Sharpness – control image sharpness.
• Equalize – apply histogram equalization.
• Contrast – adjust contrast level.
• EdgeEnhance – emphasize edges.
• Sharpen – sharpen an image.
• RankFilter – rank based filtering.
• UnsharpMask – sharpen using the unsharp mask technique.
• Brightness – adjust brightness.
• Color – adjust color balance.
• Detail – enhance fine details.
• AdaptiveContrast – CLAHE based contrast enhancement.

Filters

• Invert – invert colors.
• Solarize – apply solarization.
• Posterize – reduce number of colors.
• Expand – add a border around an image.
• Blur – Gaussian blur.
• Contour – contour detection filter.
• Emboss – emboss effect.
• FindEdges – edge detection.
• Smooth – smooth an image.
• Canny – Canny edge detection.
• ConvertToGrayscale – convert to grayscale.
• GetChannel – extract a single color channel.

SVG Generation

Nodes for creating and manipulating SVG graphics:

• RectNode, CircleNode, EllipseNode, LineNode, PolygonNode, PathNode – basic shapes.
• Text – add text elements.
• GaussianBlur, DropShadow, Gradient, Transform, ClipPath – SVG filters and effects.
• Document – build an SVG document from elements.
• SVGToImage – rasterize an SVG document to an image.

OCR

• PaddleOCRNode – run Optical Character Recognition using PaddleOCR with support for many languages.

Image Grids

• SliceImageGrid – cut an image into a grid of tiles.
• CombineImageGrid – recombine tiles back into a single image.

Installation

Install directly in the Nodetool UI or with the CLI:

nodetool-package install nodetool-ai/nodetool-lib-image

Example

from nodetool.nodes.lib.pillow.enhance import AutoContrast
from nodetool.nodes.lib.pillow.filter import Blur

# enhance an image
node1 = AutoContrast(image=input_img)
node2 = Blur(image=node1.output, radius=2)

See the Nodetool documentation for details on how to build full workflows.

License

AGPL