Stereoscopic lighting is one of the influencing visual quality factors improving the visual presentation of ceramic exhibits. However, the current research only has a specific definition, and there is no clear measurement and evaluation method. This research adopted the method of bidirectional verification: psychophysical experiment and immersive virtual reality (VR) with eye-movement tracking. We proposed a standard questionnaire for the stereoscopic visual experience. The eye-tracking data show that the visible fixation duration with stereoscopic lighting is (M = 5.18 s), and the number of fixation points accounted for 63.48% of the whole number. Both indexes were higher than the situation without stereoscopic lighting. The result shows that the accuracy of finding the detail changes with or without stereoscopic lighting was 12.5% through the comparison of visual identification tasks, and finding modeling changes was 11.5%. In the situation with stereoscopic lighting, the first identification frequency increased by 15.9% for small pattern changes of exhibits, as local modeling changes increased by 19%. These results indicated that the stereoscopic lighting set according to the exhibits' volume could effectively improve the viewer's visual guide, strengthen the visual attention of the details, and model elements of the exhibits to achieve the optimal appreciation. Povzetek: Pri stetoskopskem osvetljevanju muzejskih objektov so ugotavljali primerne rešitve za najboljši vtis na obiskovalcih.

This paper investigated the effect of luminance contrast between sign and surrounding object on the gaze behavior of pedestrian, static or dynamic 360° panorama rendered in a virtual environment applied to simulate the wayfinding of pedestrians in the metro stations. Fifty-five participants observed the sign posters and the advertisement boards with distinct luminance contrasts (31 of them were in static levels, 24 of the rest were in dynamic levels) and were asked to point out the graphic or textual changes in the area after 30s. The eye tracker recorded ocular data, and glare perception was inquired by questionnaire. The result of T-test and Regression analysis revealed that luminance contrast was a saliency feature distinguishing visual targets and surrounding objects. The correlation between the value of luminance contrast and fixations, fixation durations on the sign is negative. Each increase in luminance contrast by one unit reduces the mean of fixations by 0.826, accompanied by a stronger feeling of glare, which indicated the strategic adaption of visual attention. The study contributed to our understanding of a new sight of lighting design in public traffic places and confirmed that lighting simulation in an immersive virtual environment can effectively analyzes visual perception. Povzetek: Analizirana je prepoznavnost znakov v okolju podzemne železnice.

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