Acquiring Curvature-Dependent Reflectance Function from Translucent Material

2016 ◽  
Author(s):  
Midori Okamoto ◽  
Hiroyuki Kubo ◽  
Yasuhiro Mukaigawa ◽  
Tadahiro Ozawa ◽  
Keisuke Mochida ◽  
...  
Keyword(s):  
Reflectance Function ◽  
Translucent Material

scholarly journals Curvature-Dependent Reflectance Function for Interactive Rendering of Subsurface Scattering

2011 ◽  
Vol 10 (1) ◽  
pp. 45-51
Author(s):  
Hiroyuki Kubo ◽  
Yoshinori Dobashi ◽  
Shigeo Morishima
Keyword(s):  
Human Skin ◽  
Curve Fitting ◽  
Simulated Data ◽  
Single Parameter ◽  
Surface Scattering ◽  
Subsurface Scattering ◽  
Data Set ◽  
Interactive Rendering ◽  
Reflectance Function ◽  
Translucent Material

Simulating sub-surface scattering is one of the most effective ways to realistically synthesize translucent materials such as marble, milk or human skin. We have developed a curvature-dependent reflectance function (CDRF) which mimics the presence of subsurface scattering. In this approach, we provide only a single parameter that represents the intensity of theincident light scattered in a translucent material. The parameter is not only provided by curve-fitting to a simulated data-set, but also manipulated by an artist. Furthermore, this approach is easily implementable on a GPU and does not require any complicated pre-processing and multi-pass rendering as is often the case in this area of research.

A Bi-Directional Reflectance Function for Woven Textiles

1998 ◽  
Author(s):  
Brad Hunting ◽  
Stephen Derby ◽  
Raymond Puffer
Keyword(s):  
Surface Properties ◽  
Broad Class ◽  
Fiber Surface ◽  
Anisotropic Model ◽  
Reflectance Function ◽  
Function Models ◽  
Woven Textile ◽  
Special Case ◽  
Reflectance Data ◽  
Directional Reflectance

Abstract This paper presents a novel bi-directional reflectance function for woven textile substrates. The new reflectance function models a broad class of woven substrates, including substrates with significant anisotropic reflectance. Isotropic behavior is handled as a special case of the anisotropic model. The new model recognizes fiber surface properties, thread geometry, and weave geometry. Experimental reflectance data is presented.

Formula for spectral reflectance function of Munsell color

1984 ◽  
Vol 68 (Appendix) ◽  
pp. 76-76
Author(s):  
K. Takahama ◽  
H. Sobagaki ◽  
Y. Nayatani
Keyword(s):  
Spectral Reflectance ◽  
Reflectance Function

Translucent material transfer based on single images

2011 ◽  
Author(s):  
Chao Li ◽  
Weiming Dong ◽  
Ning Zhou ◽  
Xiaopeng Zhang ◽  
Jean-Claude Paul
Keyword(s):  
Material Transfer ◽  
Translucent Material

Development of Sound Absorbers for Large Spaces

2005 ◽  
Vol 12 (4) ◽  
pp. 237-254
Author(s):  
Yoshihito Kobayashi ◽  
Toshiya Kitamura ◽  
Shinji Yamada
Keyword(s):  
Absorption Coefficient ◽  
Resonance Frequency ◽  
High Frequency ◽  
Sound Absorption ◽  
Low Frequency ◽  
Frequency Bands ◽  
Sound Fields ◽  
Absorption Area ◽  
Translucent Material ◽  
The Chairs

Moulded chairs have been developed, in which sound absorption at low frequency bands is increased by using the seat section and/or the back section as a resonator. In addition, a translucent sound absorption panel has been developed for application in large spaces. In the case of the chairs the resonance frequency, determined by the position, number, and depth of the holes, was examined. Prototypes were constructed, and the equivalent absorption area was measured in a reverberation room. The resonators of the chairs achieved an equivalent absorption area of 0.15 m2/seat, in the 125 Hz band. For the case of the translucent material, sound absorption was measured and compared with conventional sound absorption materials. The panels were designed in order to control sound fields in large spaces. The panels achieved a sound absorption coefficient of 0.6 to 1.0 at middle and high frequency bands.

Le pan de verre scientifique: Le Corbusier and the Saint-Gobain glass laboratory experiments (1931–32)

2013 ◽  
Vol 17 (1) ◽  
pp. 63-72
Author(s):  
Rosa Urbano Gutiérrez
Keyword(s):  
Laboratory Experiments ◽  
Le Corbusier ◽  
Internal Cavity ◽  
Glass Wall ◽  
New Era ◽  
Winter Cold ◽  
Translucent Material ◽  
Environmental Theory ◽  
Near Future ◽  
The Way

As to the isothermicity of the translucent walls, experimental laboratories will be able in the near future to give us a new translucent material whose isothermal properties will be equal to that of the thickest wall. From then on, we will witness the inauguration of a new era: buildings will be altogether hermetically closed. Windows will no longer be needed on the façade; consequently neither dust nor flies nor mosquitoes will enter the houses; nor will noise.Le Corbusier's fascination with light and glass formed a continuing thread throughout his career. After his maxim ‘architecture is lighted floors’ came the passionate discourses to defend the building's openness, first with his fenêtre en longueur, the ribbon window, and ultimately with his emblematic pan de verre, the glass wall that would not only provide sunlight-flooded interiors but would also most significantly contribute to shape the Modernist imagery. Despite the profuse explorations invested in this concept, Le Corbusier would always lament his failure to execute his ‘pan de verre 100%’ in the way he would have desired: ‘as a mur neutralisant constituted by a double glass-wall with an internal cavity through which conditioned air would circulate, hot in winter, cold in summer’.The idea of the mur neutralisant was born as part of a challenging environmental theory for buildings, termed either respiration exacte or air exact [1], proposed by Le Corbusier in collaboration with his cousin and practice partner Pierre Jeanneret in 1928. Le Corbusier would describe this theory in two of his most dogmatic publications: first, as one of his lectures (5 October 1929) collected in Précisions (1930) and, second, as part of La Ville Radieuse (1935), his manifesto on modern habitation.

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