A Study on the Effect of Interior Gradation Pattern on Sense of Roominess in Car Room

Abstract

Cars are requested to obtain a wide room space and a compact package at the same time. Expression of depth through gradation of brightness is known well in general, and in this study, subjects were experimented whether car room could be shown larger when this method using a gradation tunnel pattern, was applied to the interior of a car. Following results were derived from the experiment, by sorting and analyzing subjects' comments and analyzing variances of numerical data, and it was clarified that the method is influential in the sense of depth.
1. The depth perception created by the gradation tunnel pattern is a few centimeters, more or less.
2. There are both cases when it seems dented and when it seems swollen.
3. Black centered pattern looks deeper than white centered pattern.
4. Stepping gradation pattern looks deeper than continuous gradation pattern.
5. How it is perceived varies among subjects, and roughly they could be divided into four groups.
6. What looks deeper is not necessarily preferable, and the application to door trim seems adequate.