Mr. Sébastien de Cunsel Profile

Sébastien de Cunsel

at Sony Europe B.V.

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Proceedings Article | 30 March 2020 Paper

Evaluation of augmented reality (AR) displays performance based on human visual perception

Sébastien de Cunsel

Proceedings Volume 11350, 1135008 (2020) https://doi.org/10.1117/12.2555472

KEYWORDS: Augmented reality, Eye, Modulation transfer functions, Image transmission, LCDs, Visualization, Image quality, Autoregressive models, Light sources and illumination, Standards development

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Conventional display metrics are currently used to evaluate the performance of augmented reality (AR) displays: the maximum luminance it can reach, the image uniformity, the contrast ratio and others. However, these metrics initially defined for non-transmissive displays, do not consider the impact of the see-through environment as it exists in AR applications. These measurements (usually obtained in a dark laboratory) are used to quantify the performance of AR display devices, but do not necessary relates to the perceived quality of images rendered by such devices, due to the non-linearity of human perception. Upon this, the projected image (Fig. 1) is an overlay upon the see-through environment. The intensity balance between these two "layers" becomes critical as the perceived scene (Fig. 2) is resulting from color mixing. Here, we want to highlight the fact that the brightness (perceived intensity) and color uniformity of the projected image becomes less important whereas the contrast ratio between the image and the environment becomes very critical. Other metrics are also less significant once the outside scene is added such as pixel sharpness (MTF) and the generated halo effects. These metrics are still important to evaluate the display performance for comparison purpose, but higher thresholds should be permitted for an AR display. The performance requirements must be adjusted in accordance to the AR application itself and not as it is done for conventional displays.

Proceedings Article | 21 June 2019 Presentation + Paper

Evaluation of augmented reality (AR) displays performance based on human visual perception

Sébastien de Cunsel

Proceedings Volume 11062, 110620V (2019) https://doi.org/10.1117/12.2527613

KEYWORDS: Augmented reality, Modulation transfer functions, Eye, Image transmission, LCDs, Visualization, Image quality, Autoregressive models, Light sources and illumination, Standards development

Read Abstract +

Conventional display metrics¹ are currently used to evaluate the performance of augmented reality (AR) displays: the maximum luminance it can reach, the image uniformity, the contrast ratio and others. However, these metrics initially defined for non-transmissive displays, do not consider the impact of the see-through environment² as it exists in AR applications. These measurements (usually obtained in a dark laboratory) are used to quantify the performance of AR display devices, but do not necessary relates to the perceived quality of images rendered by such devices, due to the non-linearity of human perception. Upon this, the projected image (Fig. 1) is an overlay upon the see-through environment. The intensity balance between these two “layers” becomes critical as the perceived scene (Fig. 2) is resulting from color mixing. Here, we want to highlight the fact that the brightness (perceived intensity) and color uniformity² of the projected image becomes less important whereas the contrast ratio between the image and the environment becomes very critical. Other metrics are also less significant once the outside scene is added such as pixel sharpness² (MTF) and the generated halo effects. These metrics are still important to evaluate the display performance for comparison purpose, but higher thresholds should be permitted for an AR display. The performance requirements must be adjusted in accordance to the AR application itself and not as it is done for conventional displays.

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