Certification for colour difference & colour gamut on projector

Colour Difference (CIEDE2000)

Colour difference used for describing the difference between the colours. The CIE international standard specified the method of calculating colour differences according to the CIEDE2000 formula. The standard may be used for the specification of the colour difference between two colour stimuli perceived as belonging to reflecting or transmitting objects. Colour difference was the colour accuracy for the measure colour to the target colour also.

ΔE ≤ 1, ΔE ≤ 2 & ΔE ≤ 10

ΔE means Delta E(The “E” in Delta E stands for “Empfindung”, which is the German word for sensation). Delta E is a standard measurement- created by the CIE. That quantifies the difference between two colours that appear on a screen. Delta E is measured on a scale from 0 to 100, standard perception ranges are as follows:

ΔE ≤ 1: Not perceptible by the human eye.
ΔE ≤ 2: Perceptible through close observation.
ΔE ≤ 10: Perceptible at a glance.

Colour Gamut

The colour gamut describes a range of colours within the spectrum of colours, or a colour space, that can be reproduced on the screen.

Colour Gamut ≥ 95%DCI-P3 & Colour Gamut ≥ 90%DCI-P3

The Society of Motion Pictures and Television Engineers opted to introduce its own colour standard, DCI-P3. The DCI-P3 colour standard is compatible with all digital projectors on the cinematic level and DCI-P3 opts for a colour gamut that is nearly a quarter wider than sRGB counterpart. Especially for red and green.

Colour Gamut ≥ 95%DCI-P3: Used for professional scene.

Colour Gamut ≥ 90%DCI-P3: Whether watching movies or HD movies can bring a very good visual experience. (Such as theatre-grade visual effects)

Colour Gamut ≥ 99.9%Rec.709 & Colour Gamut ≥ 95%Rec.709

Rec.709, BT.709 and ITU.709 was standard developed by ITU-R for image encoding and signal characteristics of high definition displaying or HDTV.

Colour Gamut ≥ 99.9%Rec.709: Wide colour gamut, Mainstream high-quality screen colour gamut level.

Colour Gamut ≥ 95%Rec.709：means SDR (Standard Dynamic Range) colour gamut, general colour gamut level.

Certification for colour difference & colour gamut on projector

Certification for colour difference & colour gamut on projector

SCOPE:

Basis of certification (Test requirements):

Key statements of the certification mark:

Next Steps