Perceptual considerations for motion blur rendering

Abstract

Motion blur is a frequent requirement for the rendering of high-quality animated images. However, the computational resources involved are usually higher than those for images that have not been temporally antialiased. In this article we study the influence of high-level properties such as object material and speed, shutter time, and antialiasing level. Based on scenes containing variations of these parameters, we design different psychophysical experiments to determine how influential they are in the perception of image quality.This work gives insights on the effects these parameters have and exposes certain situations where motion blurred stimuli may be indistinguishable from a gold standard. As an immediate practical application, images of similar quality can be produced while the computing requirements are reduced.Algorithmic efforts have traditionally been focused on finding new improved methods to alleviate sampling artifacts by steering computation to the most important dimensions of the rendering equation. Concurrently, rendering algorithms can take advantage of certain perceptual limits to simplify and optimize computations. To our knowledge, none of them has identified nor used these limits in the rendering of motion blur. This work can be considered a first step in that direction.

Generating stereoscopic HDR images using HDR-LDR image pairs

“…This method has also been successfully applied in a manner similar to ours by Ledda et al [2005], Banterle et al [2009b], Rubinstein et al [2010], and Navarro et al [2011]. Ledda …”

“…Additional statistics that reveal data consistency both within-participant and between-participant are available. Furthermore, the method of paired comparisons has been successfully used in other similar studies [Banterle et al 2009b;Ledda et al 2005;Rubinstein et al 2010;Navarro et al 2011]. For these reasons paired comparisons was chosen as the experimental method.…”

Effects of Approximate Filtering on the Appearance of Bidirectional Texture Functions

“…This may be due not only to the lack of flickering artifacts, but also to motion de-blurring mechanisms in our visual system, which make moving images appear sharper than they actually are [42]. This preference seems to be related to the motion blur effect [18]. Future work needs to be conducted to examine the relationship between pre-filtering and motion blur.…”

“…Perception The study of visual perception in the context of computer graphics has produced many useful results [14]. Some example applications include selective rendering [15], global illumination [16], [17] and motion blur [18]. Rogowitz and Rushmeier [19] found that simplified geometries were perceived differently for static and animated cases.…”

Change Blindness Images

“…Other properties of the human visual system, such as inattentional blindness and change blindness, have also been utilized for rendering acceleration [29], [30], [31], character animation [32], and tone mapping [33]. Perceptual strategies are also useful in participating media rendering [34], virtual crowd rendering [35], and rendering of motion blur effects [36]. Ramanarayanan et al [37] proposed the visual equivalence predictor for predicting visual differences between images rendered under warped illumination and images rendered under reference illumination.…”