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Summary

This demo contains a bundled object version of a Macbeth Color Checker. This object can be easily inserted into other scenes and used to create color calibrated images from DIRSIG’s native radiance images.

Details

The Macbeth color checker panel object contains 24 specific panels that are used for visual perception and calibration applications. The panel in the bundled object is 1 meter x 2/3 meter. Since the object is exactly 1 meter wide, it can be easily scaled to any size when it is instanced into a scene GLIST file.

Important Files

This section highlights key files important to the simulation.

The Bundled Object

The bundled color checker object is in the geometry/bundles/macbeth folder. Within that folder, the following files define the geometry and materials for the object:

macbeth.glist

This is the main bundle GLIST that should in instanced into the scene.

macbeth.obj

This is the OBJ file for the panel set. Each color panel is a pair of triangles and the background is an additional pair of trianges. The color panels are offset in the Z direction by 0.001 meters above the background panel.

macbeth.mat

This is the material database that contains the entries for the 24 panel materials (using the standard panel numbering and naming scheme) and a black (0%) reflector for the panel frame that the color panels are mounted on. All the materials are configured with the SimpleReflectance model.

materials

This folder contains the spectral reflectance curves for the 24 panels and the background (black).

Setup

This section includes any step-by-step instructions for running and visualizing the simulation.

To run the simulation, perform the following steps:

  1. Run the DIRSIG demo.sim file

  2. Load the resulting rgb.img radiance file in the image viewer.

Results

The RGB radiance image of the Macbeth Color Checker target.

images/rgb.png