Random RGB Copernicus node

Creates an RGB layer with random colors.

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Parameters
- Range
- Random
Inputs
Outputs

This node generates random colors for an RGB layer. The Seed parameter controls the random selection, which by default fills the layer. For per-pixel randomness, turn Random per Pixel on or use the seed input to vary the randomness for each custom shape.

Parameters ¶

Range ¶

Range Values

The method used to select the range in which to generate the random colors.

Min/Max

The random color is between the given minimum and maximum values.

Color Ramp

A ramp parameter look up generates the random colors.

Specific Values

The random colors are one of the listed RGB colors. This lets you provide a list of specific colors or multiple ranges, which can be useful to create colors representing specific color palettes.

Color Model

When Range Values is Min/Max, this is the color space for specifying the range of color values.

RGB

Constrain the red, green, and blue component values.

HSV

Restrict the adjustment values to a slice of the hue, saturation, and value wheel.

Relative to Color

The color to which the given color range is relative. This is useful if you have a specific color in mind and want small deviations from it.

Red Min/Max

The minimum and maximum values of the red component.

Green Min/Max

The minimum and maximum values of the green component.

Blue Min/Max

The minimum and maximum values of the blue component.

Hue Min/Max

The minimum and maximum values of the hue component, which captures the pure color.

Saturation Min/Max

The minimum and maximum values of the saturation component, which captures the vibrancy of the color.

Value Min/Max

The minimum and maximum values of the value component, which captures the brightness.

Color Ramp

When Range Values is Color Ramp, the intermediate uniformly-distributed value is fed through this ramp to obtain the random color.

See Ramp parameters for more information.

Color Palette

When Range Values is Specific Values, this is a set of pre-defined color palettes. Select one of these options to populate the Number of Colors parameter with four preset colors.

Number of Colors

When Range Values is Specific Values, this controls the number of sets of possible random colors. Each set can be a single color or consist of multiple related colors, which the Color # dropdown menu determines.

Color #

The base color for the set. You can also use the dropdown menu to control how the set of colors is derived from the specified base Color #.

Constant

This set includes only the base Color #.

Complementary

This set consists of the base Color # and its complementary color. Complementary colors are opposite to each other on the color wheel.

2 Analogous

This set consists of three colors: the base Color # and its two neighbors around the color wheel.

4 Analogous

This set consists of five colors: the base Color # and its four neighbors around the color wheel.

Triadic

This set consists of three colors: the base Color # and its two neighbors around the color wheel.

Tetradic

This set consists of four colors: the base Color # and its complement, as well as a neighbor for each.

5 Shades

This set contains five colors with varying levels of brightness.

5 Tints

This set contains five colors with varying levels of saturation.

Weight

The weight with which to sample the given adjustment value. Values with a lower Weight are selected less frequently. When all weights are the same, each adjustment value has the same probability.

Angle

The distance to the color’s neighbors on the color wheel.

Distance

The spacing between the colors' varying levels of brightness (for 5 Shades) or saturation (for 5 Tints).

Random ¶

Random per Pixel

Sets the random color selection on a per-pixel basis. Use this option if you want to create fine, grain-like noise.

Seed

All generated colors depend randomly on this value. Choose a different value if the current seed produces undesirable samples.

Time

All generated colors depend randomly on this value. Choose a different value if the current seed produces undesirable samples.

Zero Negative IDs

When a seed input is wired in, this outputs black color for any pixel where the seed is a negative integer.

Turn this on when you consider negative seed values as part of the background where you don’t want to generate random colors.

Inputs ¶

size_ref

A representative layer that determines the size of the output image and controls the metadata.

min

A layer to control the minimum component limit when Range Values is set to Min/Max.

max

A layer to control the maximum component limit when Range Values is set to Min/Max.

ramp

A layer from which to horizontally sample the range colors when Range Values is set to Color Ramp.

seed

A layer to control the random color distribution.

Outputs ¶

random

The output layer with the random colors applied.

See also

Random Mono

Copernicus nodes

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Start of a block, containing its inputs.
Block End

End of a block, declaring its outputs.
Block to Geometry

Compiles a block and produces its geometry representation.
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Applies a blur to a layer.
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Camera Import

Creates a layer in a camera’s space.
Camera Properties

Adjusts the camera properties of a layer.
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Extracts a channel from a layer.
Channel Join

Combines multiple Mono layers into one multichannel layer.
Channel Split

Divides a layer’s channels into Mono layers.
Channel Swap

Swaps channels within a multichannel layer.
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Chladni Cymatic Patterns

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Chromatic Aberration

Adds chromatic aberration to your image.
Clamp

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Blends two normal maps together.
Compare

Creates a mask by comparing two layers.
Constant

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Contact Sheet

Arranges input layers into a contact sheet.
Contrast

Applies contrast to a layer.
Convert Normal

Converts normal layers between signed and offset.
Convolve 3×3

Convolves a layer by a 3×3 kernel.
Crop

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Cross Product

Performs a cross product of two RGB layers.
Cryptomatte

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Cryptomatte Encode

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Denoise TVD

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Dilates or erodes a layer.
Distort

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Dot Product

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Detects edges in the input image.
Edge Detect by Contour

Detects varying-width silhouette lines.
Edge Detect by Depth

Detects varying-width self-occluding silhouettes.
Edge Detect by Normal

Detects varying-width crease-lines.
Eikonal

Computes distances by solving the Eikonal equation.
Equalize

Equalizes colors by stretching or shifting their range.
Error

Generates a message, warning, or error.
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Fills empty areas of an image using colors at the edges of non-empty areas.
Feather

Smooths out sharp changes in contrast.
File

Loads an image or video from disk.
Fill

Fills a layer with a constant value.
Flip

Flips a layer horizontally, vertically, or diagonally.
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Generates fractal noise.
Fractal Noise 3D

Generates fractal noise from 3D locations.
Function

Applies a mathematical function to a layer
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Applies gamma correction to a layer.
Geometry to Layer

Converts a 2D volume into a layer.
Glow

Adds glow to an image based on its luminance.
HSV Adjust

Converts between RGB and HSV color spaces, or modifies HSV.
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Imagines a sphere for each pixel and determines how occluded that sphere is based on its surroundings.
Height to Normal

Converts a height layer to a normal layer.
Hex Tile

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Histogram

Builds a histogram from a layer.
ID to Mask

Creates a mask from an ID layer based on filtering parameters.
ID to Mono

Converts an ID layer into a mono layer.
ID to RGB

Converts an ID layer into an RGB layer.
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Illegal Pixel

Detects and then fixes or highlights illegal pixels in images.
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Invert

Inverts a layer.
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Runs a block using inputs plugged into this node.
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Computes the Julia set to create a fractal.
Kuwahara Filter

Applies the Kuwahara filter, which creates painterly effects.
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Generates a layer.
Layer Attribute Create

Adds or edits user-defined metadata on a layer.
Layer Properties

Edits basic layer metadata.
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Converts a layer into a 2D volume.
Light

Lights a layer given a light direction and normals.
Match Camera

Transforms a layer to match a reference camera.
Median

Applies a median filter to an image.
Mirror

Mirrors an image based on an arbitrary number of planes.
Mono

Converts a layer to mono.
Mono to ID

Converts a mono layer into an ID layer.
Mono to RGB

Converts a mono layer into an RGB layer.
Mono to RGBA

Converts a mono layer into an RGBA layer.
Mono to SDF

Computes a signed distance field from an iso-level of a mono layer.
Null

Passes inputs to the outputs.
OCIO Transform

Converts color spaces using OCIO transforms.
ONNX Inference

Applies inference from an ONNX Machine Learning model.
OpenCL

Executes an OpenCL kernel on layers.
Output

Collects the outputs of a subnetwork.
Polar to UV

Converts polar coordinate pixels to Cartesian pixels.
Position Map

Generates a position map.
Prefix Sum

Computes the prefix sum of a layer.
Premultiply

Premultiplies or un-premultiplies an RGBA layer.
Preview Material

Applies the preview material to geometry.
Project on Layer

Projects a layer onto a target layer.
Quantize

Quantizes input data into discrete steps.
RGB to RGBA

Converts RGB layers to RGBA.
RGB to UV

Splits an RGB layer into UV and mono layers.
RGBA to RGB

Converts RGBA layers to RGB.
RGBA to UV

Splits an RGBA layer into two UV layers.
ROP Image

Writes the output of a COP network to disk.
Ramp

Generates linear and radial ramps.
Random Mono

Creates a mono layer with random values.
Random RGB

Creates an RGB layer with random colors.
Rasterize Geometry

Rasterizes geometry onto a layer.
Rasterize Layer

Rasterizes a layer onto another layer’s camera.
Rasterize Setup

Prepares geometry for the Rasterize Geometry COP.
Remap

Remaps a layer.
Resample

Performs image scaling by changing the width, height, and pixel sizes.
SDF Adjust

Modifies the values for a Mono SDF layer.
SDF Blend

Combines two Mono SDF layers.
SDF Shape

Builds a 2D signed distance field of a selected shape.
SDF to Mono

Converts an SDF field to a Mono image layer.
SDF to RGB

Converts an SDF field to an RGB color layer.
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Imports SOP Geometry into Copernicus.
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Segment a layer into connected components.
Segment by Value

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Sequence Blend

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Slap Comp Import

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Slope Direction

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Smooth Fill

Smoothly fills a region of a layer.
Stamp Points

Stamps layers from point positions.
Statistics

Outputs the average, minimum and maximum values of the input layer
Statistics by ID

Compute statistics for each ID island.
Streak Blur

Streaks an image, adding a motion blur effect.
Subnetwork

Used to organize a collection of COPs into one node.
Switch

Selects an input layer.
Switch If Wired

Selects an input based on what is connected.
Switch by Type

Selects an output layer by the type of the inputs.
Tile Pattern

Generates rectangular tiles for texture patterns.
Transform 2D

Transforms a layer in 2D.
Transform 3D

Transforms a layer in 3D.
UV Map

Generates a UV Map.
UV Map by ID

Creates a UV Map for each connected ID island.
UV Sample

Samples an input layer using a UV layer.
UV Transform

Transforms the values of a UV layer in 2d space.
UV to Polar

Converts Cartesian coordinate pixels to polar coordinate pixels.
UV to RGB

Joins a UV and mono layer into an RGB layer.
UV to RGBA

Joins two UV layers into an RGBA layer.
Vector Transform

Transforms values of an RGB layer in 3d space.
Wipe

Performs a wipe transition between two images.
Worley Noise

Generates Worley noise.
Worley Noise 3D

Generates Worley noise from 3d locations.
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Z Composite

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