scholarly journals Surface curvature from kinetic depth can affect lightness.

2018 ◽  
Vol 44 (12) ◽  
pp. 1856-1864
Author(s):  
Lindsay M. Peterson ◽  
Daniel J. Kersten ◽  
Damien J. Mannion
Keyword(s):  
Surface Curvature ◽  
Kinetic Depth

Depth Capture by Kinetic Depth and by Stereopsis

Perception ◽  
10.1068/p3011 ◽  
2000 ◽  
Vol 29 (2) ◽  
pp. 211-220 ◽  
Author(s):  
Keetaek Kham ◽  
Randolph Blake
Keyword(s):  
Surface Structure ◽  
Motion Parallax ◽  
Surface Curvature ◽  
Direction Parallel ◽  
Object A ◽  
Kinetic Depth ◽  
Motion Flow

The perceived depth of regions within a stereogram lacking explicit disparity information can be captured by the surface structure of regions where disparity is explicit: stereo capture. In two experiments, observers estimated surface curvature/depth of an untextured object (a ‘ribbon’) superimposed on a cylinder textured with dots, the cylinder curvature being defined by disparity (stereo depth) or by motion parallax (kinetic depth: KD). With the stereo-defined cylinder, depth capture was obtained under conditions where the disparity of the ribbon was ambiguous; with the KD, cylinder depth capture was obtained under conditions where the motion flow of the cylinder was in a direction parallel to that of the ribbon. These results demonstrate yet another similarity between KD and stereopsis.

scholarly journals Surface curvature from kinetic depth can affect lightness

2018 ◽  
Author(s):  
Lindsay Peterson ◽  
Daniel Kersten ◽  
Damien Mannion
Keyword(s):  
Visual System ◽  
Surface Curvature ◽  
Surface Shape ◽  
Surface Reflectance ◽  
Curved Surfaces ◽  
Depth Effect ◽  
Relative Contribution ◽  
Kinetic Depth Effect ◽  
Relative Brightness ◽  
Kinetic Depth

The light reaching the eye confounds the proportion of light reflected from surfaces in the environment with their illumination. To achieve constancy in perceived surface reflectance (lightness) across variations in illumination, the visual system must infer the relative contribution of reflectance to the incoming luminance signals. Previous studies have shown that contour and stereo cues to surface shape can affect the lightness of sawtooth luminance profiles. Here, we investigated whether cues to surface shape provided solely by motion (via the kinetic depth effect) can similarly influence lightness. Human observers judged the relative brightness of patches contained within abutting surfaces with identical luminance ramps. We found that the reported brightness differences were significantly lower when the kinetic depth effect supported the impression of curved surfaces, compared to similar conditions without the kinetic depth effect. This demonstrates the capacity of the visual system to use shape from motion to "explain away" alternative interpretations of luminance gradients, and supports the cue-invariance of the interaction between shape and lightness.

The enthalpy of vaporization and the liquid surface curvature

1991 ◽  
Vol 56 (7) ◽  
pp. 1400-1403
Author(s):  
Václav Svoboda
Keyword(s):  
Liquid Surface ◽  
Convex Surface ◽  
Enthalpy Of Vaporization ◽  
Surface Curvature

The effect of liquid surface curvature on enthalpy of vaporization is investigated. The limits are found at which this effect begins to manifest itself both for the concave and convex surface.

Lithium Storage in Bowl-like Carbon: The Effect of Surface Curvature and Space Geometry on Li Metal Deposition

2021 ◽  
pp. 2145-2152
Author(s):  
Weibin Ye ◽  
Lina Wang ◽  
Yichen Yin ◽  
Xinhang Fan ◽  
Yong Cheng ◽  
...  
Keyword(s):  
Surface Curvature ◽  
Metal Deposition ◽  
Lithium Storage ◽  
Space Geometry ◽  
Effect Of Surface

Steric scattering of rod-like swimmers in low Reynolds number environments

Soft Matter ◽  
2021 ◽  
Author(s):  
Kentaro Hoeger ◽  
Tristan Ursell
Keyword(s):  
Reynolds Number ◽  
Cell Size ◽  
Low Reynolds Number ◽  
Surface Curvature ◽  
Natural Environments ◽  
Solid Objects ◽  
Low Reynolds

While navigating natural environments, interactions with cell-size solid objects alter paths of swimming microbes. We characterized such ‘scattering’ from synthetic objects of controlled surface curvature. A sterics-only model agrees well with the data.

Detecting stony areas based on ground surface curvature distribution

2015 ◽  
Author(s):  
Paavo Nevalainen ◽  
Maarit Middleton ◽  
Ilkka Kaate ◽  
Tapio Pahikkala ◽  
Raimo Sutinen ◽  
...  
Keyword(s):  
Ground Surface ◽  
Surface Curvature ◽  
Curvature Distribution
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