Multi-display system and method for adjusting multi-display system

A multi-display system comprising:

• a master display device;
• a first slave display device that is different from the master display device;
• an optical measuring instrument configured to measure luminance and color which are displayed by a first image display unit of the master display device;
• and
• a deterioration factor calculating unit configured to calculate a deterioration factor on the basis of a first set of measurement parameters of the first image display unit of the master display device, where the first set of measurement parameters are parameters that represent the luminance and the color measured by the optical measuring instrument, and of initial values of the first set of measurement parameters of the first image display unit of the master display device,
• wherein the master display device is configured to perform adjustment of the master display device on the basis of the first set of measurement parameters of the first image display unit of the master display device, and
• wherein the first slave display device is configured to perform adjustment of the first slave display device on the basis of a second set of measurement parameters of a second image display unit of the first slave display device, wherein the second set of measurement parameters are calculated from the deterioration factor calculated by the deterioration factor calculating unit and from initial values of the second set of measurement parameters of the second image display unit of the first slave display device.