Real-time simulation and visualization of human vision through eyeglasses on the GPU

Abstract

Figure 1: Simulation results of a presbyopic eye (i.e., limited accommodation) using a progressive addition lens (B-spline/sphere): view through the far vision section (left) and near vision section (right). Defocus is computed approximately and rendertime is less than 32 ms per frame. The smaller images show effective astigmatism and refractive power of wavefronts at the virtual eye lens, respectively. AbstractWe present a novel approach that allows real-time simulation of human vision through eyeglasses. Our system supports glasses that are composed of a combination of spheric, toric and in particular of free-form surfaces. In order to obtain eye accommodation we perform wavefront tracing on the GPU. Defocus is achieved either by progressive distributed ray tracing of the eye lens (accurate) or by approximate blurring according to the obtained wavefront parameters. While the first variant is best suited guiding lens manufacturers during the design process of lenses, we consider the second approach ideal for giving customers a real-time impression of customized virtual spectacles in eye shops. Additionally, we visualize refractive power and effective astigmatism of incident wavefronts. That allows quality assessment of special purpose lenses such as reading or sport glasses in particular scene environments.

Real-time Simulation of Human Vision using Temporal Compositing with CUDA on the GPU

“…In addition, we would like to incorporate eyeglasses and ametropic visual defects into our simulation. Therefore, we plan to determine eye lens accommodation by using a wavefront-tracing-based algorithm; e.g., [NSG12]. In fact, the goal towards handling multi-lens systems led us to the design choice of using ray tracing rather than (potentially faster) rasterization for scene rendering.…”

“…Wavefront tracing [K + 64, Sta72] is used to avoid this limitation and has been applied for the optimization of the design of eyeglasses [LSS98]. In addition, wavefront tracing is an integral part of several approaches that simulate human vision [Bar04], [KTMN07], [KTN10], [NSG12]. While these approaches focus on the lens system of the human eye, they do not address temporal aspects of human vision.…”

Simulating real-world scenes viewed through ophthalmic lenses

“…It is worth to note that most authors ignore the uniform sampling requirement, evaluating the involved functions in a uniform grid in (e.g. [5,6,8]). This translates into a significant error, corresponding to ignoring the scaling factor produced by the Jacobian of T, which represents the variable energy density at different spatial locations due to optical distortion.…”

“…Furthermore, we propose scene image modeling for, on the one hand, understanding and improving ophthalmic lens designs, and, on the other hand, selecting the best design for a specific need and subject. Inde ed, in the last decade, the goal of simulating scene images seen through eyeglasses has been tackled by researches in the field of computer graphics [5,6], with a special emphasis in progressive addition lenses [7,8]. However, the models proposed in the aforementioned works do not provide the way to estimate the relative blur size with respect to the area of the scene.…”

Efficient Rendering of Ocular Wavefront Aberrations using Tiled Point‐Spread Function Splatting

“…Most algorithms employ either an analytic [MKL97, FM06, DWRW16, LMB*19] or polygonal [WPP14] representation to model the various refracting elements of the eye. Alternatively, wavefront tracing can be used to derive the most important characteristics of the optical system, then fall back to a simplified lens model for the actual ray-tracing process [LSS01,NSG12].…”