Scalable 3D image conversion of stereoscopic images for safety and comfort

Since 3D display methods and viewing environments vary widely, high-quality content is expected to become multi-purpose. Meanwhile, there is increasing interest in the bio-medical effects of various types of image content and there are moves toward international standardization, so safety and comfort need to be considered in 3D content production. The aim of the authors' research is to contribute to the production and application of 3D content that is safe and comfortable. In this paper, the authors focus on the process of changing the screen size, examining a scalable 3D conversion algorithm and evaluating its effectiveness. The authors evaluated the visual load imposed during the viewing of various 3D contents converted by the prototype algorithm by comparing them with ideal conditions and with content expanded without conversion. To examine the effects of screen size reduction on viewers, changes in user impression and experience were elucidated using an evaluation grid method.