A Study on the Effect of the Real-world Backgrounds using Colour Blending Technique on Optical See-through AR User Interface Design

Through the few numbers of formal study that shows the usability of the optical see-through augmented reality (AR) display, especially in the outdoor environment, has been affected by ambient lighting conditions and dynamic real-world backgrounds. They used painted posters which represented a real-world background to examine the effect. Under changing lighting conditions, the colour palette of the environment can also cause considerable problems. For example, specific label colours can be affected by the similarity of the selected colour scheme. Besides, the actual outdoor light source illuminates the actual objects in outdoor AR systems, while the augmented virtual objects are illuminated by a virtual light source. The colour differentials arise from these two light sources, with the actual object and virtual object being visualized as a combination of the colours induced by the two light sources. Furthermore, there is a visible colour difference between the real object and the virtual object. This paper studies the effect of the real-world backgrounds using colour blending technique on optical see-through AR user interface design. It enables AR graphics to be overlaid onto real-world backgrounds as nicely as painted posters. Colour blending effects influenced physical materials as backgrounds are almost the same as their corresponding poster backgrounds, even if each pair of colours are just a metameric match.