Abstract
In projection-based augmented reality (AR) alleviating visual distraction of patterns has been a great challenge. As a representative one, a method of embedding patterns and their complements (hereafter, we call the pairs complementary patterns) into AR images alternately has been proposed recently. This paper presents subjective evaluation results and their statistical analysis on the visual perceptibility of embedding complementary patterns in different ways in a standard hardware environment. Then, we explore the constraints for embedded complementary patterns to be less perceptible. As expected, high projector refresh rate and low pattern strength were the general conditions for a decrease in the perception of embedded complementary patterns. However, reducing pattern size and projecting complementary patterns with an interval were also among the factors affecting the results. Detailed constraints are given in the experimental results. Also, we present which constraint is more dominant for pattern perceptibility.
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