michel-leonard

Small numerical inconsistency in CIEDE2000 implementation (line 145) causes ΔE00 error of 4e-5

1

Hi, I noticed a small but consistent numerical difference between the ΔE00 results from `culori` and a reference implementation of the CIEDE2000 formula. After analyzing the source, it seems the...

Incorrect `hpmean` correction in CIEDE2000 implementation

1

Hi, While validating the `DeltaE` function of this package against several established implementations (including [colormath (Python)](https://github.com/ubernostrum/colormath), [palette (Rust)](https://github.com/Ogeon/palette), and my own implementation at [michel-leonard/ciede2000-color-matching](https://github.com/michel-leonard/ciede2000-color-matching)), I noticed a systematic deviation in...

Hello, I came across [ColorExtractor.php](https://github.com/thephpleague/color-extractor/blob/master/src/ColorExtractor.php#L171), and saw that you do trigonometry with degrees in ΔE2000. However, the PHP manual, like that of most languages, indicates that angles are in radians...