EFFECT OF SURFACE PROPERTIES ON THE VISUAL EVALUATION OF BUILDING STONE FINISHING : Part 4 Influences of lighting irradiation angle and observation distance on visual evaluation of sandstone

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  • TSUCHIYA Jun
    Dept. of Architecture, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan Univ.
  • KITSUTAKA Yoshinori
    Dept. of Architecture, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan Univ.
  • TAMURA Masaki
    Dept. of Architecture, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan Univ.

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Other Title
  • 建築石材仕上げの視覚的評価に及ぼす表面性状の影響に関する研究 : その4 砂岩の視覚的評価に及ぼす距離・照射角度の複合的影響
  • ケンチク セキザイ シアゲ ノ シカクテキ ヒョウカ ニ オヨボス ヒョウメン セイジョウ ノ エイキョウ ニ カンスル ケンキュウ ソノ 4 サガン ノ シカクテキ ヒョウカ ニ オヨボス キョリ ショウシャ カクド ノ フクゴウテキ エイキョウ

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In this paper, the effects of the lighting irradiation angle and the observation distance on the visual evaluation of building stone finishing were investigated. The factors affecting the visual evaluation such as unevenness, comfort of stone surface were analyzed by performing the sensory test using the natural sandstone specimen which were changing the stone type, surface finishing method and surface pattern. In the sensory test, lighting irradiation angle (θ) for the stone surface and the observation distance (L) were changed, and the relationships between θ, L and the sensory values were considered. It was cleared that the visual evaluation of unevenness became smaller with increasing distance under 15, 30 degrees of lighting irradiation angle, and the evaluation of smooth surface dose not change with the observation distance.

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