Naturalness

About: Naturalness is a research topic. Over the lifetime, 1305 publications have been published within this topic receiving 31737 citations.

Visual Experience of 3D-TV with pixelated Ambilight

Abstract: Nowadays, imaging systems can be equipped with immersive enhancements like 3D and Ambilight. In this experiment, a demonstrator with state of the art 3D technology and pixelated LED based Ambilight was built. The goal of the experiment was to investigate the concepts naturalness, viewing experience, and presence in relation to image quality, depth, and Ambilight. Results show that the concept viewing experience is a nice example of a concept taking into account the quality level of the video as well as enhancements like 3D and Ambilight. The viewing experience is significantly higher for a set-up with 3D and Ambilight compared to a set-up without 3D and without Ambilight. The concept presence takes into account the quality level of the video but to a lesser extend than naturalness and viewing experience. On the other hand, enhancements of depth and Ambilight have a larger effect on presence ratings than on naturalness or viewing experience. Depth and dynamic Ambilight give more sensory information to the viewer which results in a higher sensation of presence.

Marshall and Parsons on 'Intrinsic'

Abstract: Dan Marshall and Josh Parsons note, correctly, that the property of being either a cube or accompanied by a cube is incorrectly classified as intrinsic under the definition we have given unless it turns out to be disjunctive. Whether it is disjunctive, under the definition we gave, turns on certain judgements of the relative naturalness of properties. They doubt the judgements of relative naturalness that would classify their property as disjunctive. We disagree. They also suggest that the whole idea of judging relative naturalness is a dubious business. We reply that, like them or not, such judgements cannot easily be avoided.

Naturalness of exponential cosmon potentials and the cosmological constant problem

Abstract: We discuss the naturalness of exponential potentials for quintessence, showing that the resulting almost flat direction in the space of scalar fields, as well as the small time dependent cosmon mass, can be related to an anomalous dilatation symmetry. We argue that the physics of the cosmological constant is Planck scale physics, and comment on the role of quantum fluctuations. We present three higher dimensional scenarios how a runaway of the ``cosmological constant'' to zero can be combined with stable particle physics properties, leading at most to small variations of the ``fundamental couplings''.

The naturalness of reproduced high dynamic range images

Abstract: The problem of visualizing high dynamic range images on the devices with restricted dynamic range has recently gained a lot of interest in the computer graphics community. Various so-called tone mapping operators have been proposed to face this issue. The field of tone mapping assumes thorough knowledge of both the objective and subjective attributes of an image. However, there no published analysis of such attributes exists so far. In this paper, we present an overview of image attributes which are used extensively in different tone mapping methods. Furthermore, we propose a scheme of relationships between these attributes, leading to the definition of an overall quality measure which we call naturalness. We present results of the subjective psychophysical testing that we have performed to prove the proposed relationship scheme. Our effort sets the stage for well-founded quality comparisons between tone mapping operators. By providing good definitions of the different attributes, comparisons, be they user-driven or fully automatic, are made possible at all.