Color Impact 2023 was a great success. These pages are left here for archival purposes.
We hope to see you at a future Color Council meeting! Our next conference in June 2025.
June 11-15, 2023
Rochester Institute of Technology, Rochester, NY, USA
Presenter - Yuhao Zhu
Yuhao Zhu, Researcher and Educator
Color-Perception-Guided Display Power Reduction for Virtual RealityBattery life is an increasingly urgent challenge for today’s untethered VR and AR devices. However, the power efficiency of head-mounted displays is naturally at odds with growing computational requirements driven by better resolution, refresh rate, and dynamic ranges, all of which reduce the sustained usage time of untethered AR/VR devices. We present a gaze-contingent system that, without degrading luminance, minimizes the display power consumption while preserving high visual fidelity when users actively view immersive video sequences. This is enabled by constructing 1) a gaze-contingent color discrimination model through psychophysical studies, and 2) a display power model (with respect to pixel color) through real-device measurements. Critically, due to the careful design decisions made in constructing the two models, our algorithm is cast as a constrained optimization problem with a closed-form solution, which can be implemented as a real-time, image-space shader. We evaluate our system using a series of psychophysical studies and large-scale analyses on natural images. Experiment results show that our system reduces the display power by as much as 24% (14% on average) with little to no perceptual fidelity degradation.
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The Inter-Society Color Council advances the knowledge of color as it relates to art, science, industry and design.
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