Now showing items 1-4 of 4

    • A Low-Dimensional Function Space for Efficient Spectral Upsampling 

      Jakob, Wenzel; Hanika, Johannes (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      We present a versatile technique to convert textures with tristimulus colors into the spectral domain, allowing such content to be used in modern rendering systems. Our method is based on the observation that suitable ...
    • Re‐Weighting Firefly Samples for Improved Finite‐Sample Monte Carlo Estimates 

      Zirr, Tobias; Hanika, Johannes; Dachsbacher, Carsten (© 2018 The Eurographics Association and John Wiley & Sons Ltd., 2018)
      Samples with high contribution but low probability density, often called fireflies, occur in all practical Monte Carlo estimators and are part of computing unbiased estimates. For finite‐sample estimates, however, they can ...
    • Spectral Rendering with the Bounded MESE and sRGB Data 

      Peters, Christoph; Merzbach, Sebastian; Hanika, Johannes; Dachsbacher, Carsten (The Eurographics Association, 2019)
      In a recent journal paper, we introduced a technique to represent reflectance spectra by an arbitrary number of Fourier coefficients. As a special case, we converted tristimulus data to three Fourier coefficients. After ...
    • Wide Gamut Spectral Upsampling with Fluorescence 

      Jung, Alisa; Wilkie, Alexander; Hanika, Johannes; Jakob, Wenzel; Dachsbacher, Carsten (The Eurographics Association and John Wiley & Sons Ltd., 2019)
      Physically based spectral rendering has become increasingly important in recent years. However, asset textures in such systems are usually still drawn or acquired as RGB tristimulus values. While a number of RGB to spectrum ...