Measuring 3D crosstalk uniformity and its influence on contrast ratio

Abstract

An array detector was employed to characterize the crosstalk and contrast ratio uniformity of three‐dimensional (3D) displays. The measurement method is described and demonstrated on a stereoscopic display with passive glasses. The resulting high resolution spatial uniformity maps enable a comprehensive statistical characterization of the display and provide a useful visual assessment tool. The statistical uniformity data are used to evaluate the crosstalk dependence on viewing conditions (such as viewing distance), and show the degradation in display performance that could not be captured with a discrete spot measurement. The measurement method was also employed to examine the influence of crosstalk on contrast ratio. It is shown that for some 3D displays, the crosstalk uniformity can dominate the perceived contrast. A metric is proposed that defines the maximal crosstalk contribution to the perceived contrast for 3D images with small features. The summary parameters extracted from the uniformity maps can be utilized to define the boundary viewing conditions needed to maintain minimum image quality.

Measurement of crosstalk in stereoscopic display systems used for vision research

“…It was paired with the Nvidia shutter goggles from the previous system, and the monitor had an inbuilt infrared transmitter to permit synchronization. Due to spatial nonuniformities and temporal nonlinearities, measurement of crosstalk in LCD systems is a complex issue that has been discussed more extensively elsewhere (e.g., Hong, 2012; Penczek, Boynton, & Kelley, 2013; Tourancheau et al, 2012), and our aim here was to provide comparisons to other systems using a common methodology rather than a detailed investigation.…”

Method for 3D gray-to-gray crosstalk uniformity measurement with high perceptual relevance

“…The aforementioned 3D measurement methods, however, evaluate the display crosstalk by determining its value at a single point or at multiple discrete locations on the screen. This is not sufficient to describe the effect of crosstalk on a viewer observing the entire display [11]. Therefore, a characterization method that determines a 3D GtoG crosstalk map of the entire screen and that evaluates its uniformity is proposed.…”

“…A matrix with several gray-level transitions has been proposed by Shestak et al [10]. A characterization method that determines a 3D crosstalk map of the entire screen and evaluates its uniformity has been described by Penczek et al [11]. Perception experiments have been designed by Xia et al for a correlation analysis of objective and subjective crosstalk [2].…”

Global Evaluation and Optimization for a Directionally Illuminated Autostereoscopy

“…Huang [31] proposed a rigorous evaluation metric based on equivalent luminance and binocular luminance to figure out the viewing zone. However, the measured points on the screen are scarce to estimate the luminance uniformity and crosstalk which can be distributed unevenly on the entire screen [32]. In practice, optimizing viewing zone distribution is an effective way to improve the performance of AS3D, such as manipulating dot/linear/rectangular hybrid-shaped views [33], sub-pixel rendering [11], dynamic fusion of viewing zone [34], and ladder compound lenticular lens unit [35].…”