We performed a perception study to examine the human's ability to perceive relative depth of stereoscopically and monoscopically rendered two-dimensional shapes. Participants were required to estimate the relative distance ratios of shapes with respect to a reference object.
To display stereoscopic 3D content, a TFT-LCD monitor, model ZM-M240W, by Zalman Tech. Co., Ltd. was used. It is a passive stereoscopic 3D LCD monitor requiring polarized 3D glasses. The screen resolution was set to 1920x1080. Questions were displayed on a second monitor, and could be answered by using a mouse.
To avoid accidental motion parallax, blurring effects, as well as fluctuations in perceived depths, each participant was required to place their head on a chin rest. While seated, the distance from each participant's forehead was made to be exactly 1 metre away from the base of the 3D monitor.