Optimizing in-store colour scheme efficiency with LEDs and AI

March 07, 2017 // By Julien Happich
In the near future, will there be a place on earth without a subliminal "buy" message insidiously floating around the corner? In a pilot experiment conducted at German grocery retailer Globus supermarket, in Saarbrücken, Philips Lighting together with the German Research Center for Artificial Intellifence DFKI and EIT Digital have studied the impact of different combinations of coloured lighting on sales and customer behaviour.

For the experiment, researchers spent two months testing different lighting conditions at the supermarket’s 180m2 promotional display area (equipped with Philips StoreWise and LED lighting units). Three settings were tested: the store’s uniform overhead lighting, regular spotlights and a combination of spotlights with pastel coloured uplights. The 58 spotlights used in the experiment strengthened the appearance of products by increasing contrast while adding coloured uplighting (aimed at the ceiling) as well helped differentiate the promotional zone and make it more visible from far away, creating a distinct atmosphere and playing to the moods of the shoppers.


Philips Lighting shows pastel colored uplights
at EuroShop 2017.

Each light point in this lighting system could be independently controlled via the Philips StoreWise web app and be individually adjusted for colour, brightness and saturation. Sensors in the ceiling and in 300 shopping trolleys were used for recording the number of visitors and the time they spent within this zone compared to the rest of the store. The data was also analysed against sales figures, examining the number of products bought from within this specially-lit area.