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Pointer's Gamut Checker Command Line Interface

Warning

This software is deprecated.

This tool allow you to check if the gamut of pixels of a given image are in the Pointer's Gamut or not.

Or alternatively check if your textures (diffuse reflectance i.e albedo only) are physically correct.

This is a command line tool, it implies no graphical interface to interact with. Please refer to getting-started for having an explanation of how to use it if you never used a CLI.

The output result is an image of the same size as the original with red pixel representing the out-of-gamut ones, and black for the one in the Pointer's Gamut.

Get the app

Download the app here: https://gum.co/pgtool

Example

What is the Pointer's Gamut

The Pointer’s gamut is (an approximation of) the gamut of real surface colors as can be seen by the human eye, based on the research by Michael R. Pointer (1980). What this means is that every color that can be reflected by the surface of an object of any material is inside the Pointer’s gamut.

Pointer’s gamut is defined for diffuse reflection (matte surface)

-- from https://www.tftcentral.co.uk/articles/pointers_gamut.htm

So what that it means for 3d artist ?

That in theory, using the Pointer's Gamut you can tell if your albedo texture/aov is physically correct.

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