Abstract
Display of images/videos on a big screen/display, such as digital signage, projection mapping, etc., is becoming popular in the area of entertainment, advertisement and so on. Comparison of the usage of an LED display and a projector is important for such applications. We have prepared experimental environment where two types of projection/display using a 200 inch LED display and a 200 inch screen and a projector. Also, two brightness conditions, light-on and light-off, and two types of contents, art content and text content, were used for the experiment. Under totally eight types of environments, we carried out a psychological experiment using 24 participants. Each subject filled a questionnaire based on five-point semantic differential scale. For the obtained results, firstly, the comparison of mean value of 5 grade scores was carried out and it was revealed that the combination of art content, light-off, and LED display gives far better results than other combinations. Next, to know more detailed analysis results, three-way ANOVA was carried out. And it was revealed how the three factors (LED display/projector, light on/off, art/text content) influence each other.
