Kalibrazioa eta ezaugarritzea ez dira gauza bera.
Richard Hughes
richard@hughsie.com
Asier Saratsua Garmendia
asiersarasua@ni.eus 2025

# Zein da kalibrazioaren eta ezaugarritzearen arteko desberdintasuna?

Jende askok nahastu egiten ditu kalibrazioa eta ezaugarritzea. Kalibrazioa gailu baten kolore-portaera aldatzea da. Hori egiteko bi modu daude:

Gailuak dituen kontrolak edo barneko ezarpenak aldatzea

Kurbak aplikatzea kolore-kanalei

The idea of calibration is to put a device in a defined state with regard to its color response. Often this is used as a day to day means of maintaining reproducible behavior. Typically calibration will be stored in device or systems specific file formats that record the device settings or per-channel calibration curves.

Characterization (or profiling) is recording the way a device reproduces or responds to color. Typically the result is stored in a device ICC profile. Such a profile does not in itself modify color in any way. It allows a system such as a CMM (Color Management Module) or a color aware application to modify color when combined with another device profile. Only by knowing the characteristics of two devices, can a way of transferring color from one device representation to another be achieved.

Kontuan izan gailu baten ezaugarritzea (profila) baliozkoa izan dadin, ezaugarritzea egin zeneko kalibrazio-modu berean egon behar du gailuak.

In the case of display profiles there is some additional confusion because often the calibration information is stored in the profile for convenience. By convention it is stored in a tag called the vcgt tag. Although it is stored in the profile, none of the normal ICC based tools or applications are aware of it, or do anything with it. Similarly, typical display calibration tools and applications will not be aware of, or do anything with the ICC characterization (profile) information.