Hue Range

This rule checks that the hue values of pixels in an image fall within the specified range.

Parameter table

param	unit	required	description
minHue	°	no	Minimum hue value in degrees (minHue).
maxHue	°	no	Maximum hue value in degrees (maxHue).

Detailed description

• Ensures that all colors in the image fall within the specified hue range ([minHue, maxHue]) in degrees.
• Black, white, and gray colors are exempt from this hue check.

Correction

The correction process proposes 2 alternatives:

1. Redistribution of Hue:
   • The first proposal redistributes hues to fit within the specified hue range.
   • This aims to maintain the original color diversity.
2. Gray Replacement:
   • The second proposal replaces colors outside the specified hue range with grayscale tones.
   • This ensures compliance with the specified hue constraints, with a focus on areas that do not comply with the specified hue constraints.

How to setup

This rule evaluates whether an image's hue values conform to specified constraints. Key parameters include:

• minHue: Minimum hue value in degrees.
• maxHue: Maximum hue value in degrees.

At least one parameter is required.

Creator tips

• Analyze the image's color distribution to determine an appropriate hue range.
• Use color picker tools to identify specific hues in an image.

Examples

value	valid	maxHue	minHue	description
	✅	30	-30	The image should be made up of shades of red only.
	✅	180	90	The image should be made up of shades of green only.