Smart Dimming Sunglasses for Photophobia Using Spatial Light Modulator

04/14/2023
by   Xiaodan Hu, et al.
Shanghai Jiao Tong University
Nara Institute of Science and Technology
0

We propose a smart dimming sunglasses system for individuals with photophobia, especially those who are easily irritated by light intensity. The system uses a spatial light modulator (SLM) to selectively filter light entering the eye based on the scene detection of a camera. By controlling the transmittance of each pixel on the SLM using a modulation function, the proposed sunglasses enable an automated non-linear field of view dimming and also flexible light modulation that meets the photophobic user's visual requirements. Meanwhile, an occlusion mask created on the SLM, which possesses low transmittance to block the incoming light rays, appears blurred from the eye since the focal plane is not on the SLM and blocks the light stimulation insufficiently. To solve this problem, the aperture-based expanded mask has been used in past studies, however, the excessive large expansion ratio used in this approach leads to over-blocking (occlusion leak). In this work, we build an optimization model by simulating the defocused occlusion mask and determining the effective contribution of the degraded pixels based on the occlusion efficiency of the pixel transmittance. While the non-processed mask cannot provide sufficient occlusion and the aperture-based expanded mask causes occlusion leak, our optimized mask attenuates the intensely bright areas to a proper brightness without incorrectly attenuating surrounding areas that no need to modulation.

READ FULL TEXT

page 4

page 11

page 12

11/09/2017

Toward Depth Estimation Using Mask-Based Lensless Cameras

Recently, coded masks have been used to demonstrate a thin form-factor l...
01/16/2023

I See-Through You: A Framework for Removing Foreground Occlusion in Both Sparse and Dense Light Field Images

Light field (LF) camera captures rich information from a scene. Using th...
05/02/2020

Towards Occlusion-Aware Multifocal Displays

The human visual system uses numerous cues for depth perception, includi...
03/30/2021

Mask-ToF: Learning Microlens Masks for Flying Pixel Correction in Time-of-Flight Imaging

We introduce Mask-ToF, a method to reduce flying pixels (FP) in time-of-...
08/29/2019

Improving Self-Supervised Single View Depth Estimation by Masking Occlusion

Single view depth estimation models can be trained from video footage us...
07/11/2021

Projector Pixel Redirection Using Phase-Only Spatial Light Modulator

In projection mapping from a projector to a non-planar surface, the pixe...

Please sign up or login with your details

Forgot password? Click here to reset