Estimating Spectral Reflectance of Fabrics from High-Resolution Multi-band HDR Images(<Special issue>Digital Museum Evolution)

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  • 高分解能マルチバンドHDR画像解析に基づく織物の分光反射率推定(<特集>デジタルミュージアムの展開)
  • 高分解能マルチバンドHDR画像解析に基づく織物の分光反射率推定
  • コウブンカイノウ マルチバンド HDR ガゾウ カイセキ ニ モトズク オリモノ ノ ブンコウ ハンシャリツ スイテイ

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In this paper, we propose a new method to estimate spectral reflectance of glossy objects such as silk-like fabrics from high resolution multi-band HDR images. Specular reflection of fabrics is known to be body-colored and quite larger than diffuse reflection, which makes spectral reflectance estimation unstable. To overcome this problem, luminance of multi-band signal is normalized before estimating spectral reflectance estimation. Experimental results on glossy color charts and a satin fabric demonstrated superior performance over conventional methods. The proposed method was also effective regardless of the estimation methods such as PLS and Wiener estimation, multiple regression analysis.

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