Use Of The In-Situ Database - Image Engineering camSPECS User Manual

4.11 Use of the in-situ database

For calculating color transforms and profiles, spectral reflectance values are needed as training data. By
default, the patches of a ColorChecker or ColorChecker SG are used as objects for this purpose. The
corresponding files can be selected in the menu of the CCM calculation module.
For improved results, training data is available in the iQ in-situ database (http://insitu.image-
engineering.de). In this database, the spectral radiances of more than 2000 natural objects under various
illuminations are available. Choose a couple of objects in the database and add them to the basket (see
figure above). For example, to choose skin colors, select images from the category "portrait." Increasing
the number and diversity of selected objects will improve the calculation of the color transform for those
objects chosen. Now export the spectral radiance values by
clicking the "export / both" button. The data is saved as a
.csv file that then needs to be copied to the directory
C:/Program Files/Image Engineering/ camSPECS
V.../calibration_files/reflectance" to make it available for
CCM calculation. After a restart of camSPECS, the new
radiance data is available in menu "Training data" in the
Image Engineering
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