ITE Technical Report

If participants are not carefully selected for subjective evaluations of TV picture quality, the evaluations tend to be imprecise and to lose power to detect statistically significant differences between experimental conditions. In assessments of traditional television, participants' visual acuity (VA) should be screened. For emerging TV systems with a wide field of view (FOV), in which objects move quickly relative to the display frame, it is unclear whether screening viewers' VA is sufficient or not. Here, we evaluated saccadic eye movement parameters to identify adequate methods to screen participants. We found that the peak saccade velocity can be used to screen participants for wide-FOV TV motion picture evaluation studies, because of the significant correlation between the average subjective evaluation score and the peak saccade velocity.

View full abstract

Show abstractHide abstract

Photorealistic reproduction of material appearance is an important issue in the 3D display using computer-generated hologram. However, the advanced computer graphic techniques cannot be applied, and it is difficult to reproduce the material appearance related to the physical phenomena such as specular reflection, refraction, and transparence, because the computation of hologram requires the rendering based on wavefront propagation. In the method proposed in this paper, advanced rendering techniques of conventional computer graphics can be employed without sacrificing the important feature of holographic display, i.e., deep 3D scene is reproduced in high-resolution. Then it is possible to compute a hologram that reconstructs a photorealistic material appearance and a high resolution deep scene. Holograms were calculated with the proposed method and fabricated by a laser-lithography system, and we verified optical reconstruction of superior 3D images.

View full abstract

Download PDF (747K)

Register with J-STAGE for free!