diff --git a/math/pbr3ed.html b/math/pbr3ed.html index 5476537..092e541 100644 --- a/math/pbr3ed.html +++ b/math/pbr3ed.html @@ -45,6 +45,22 @@
$$\Phi=\lim\limits_{{\Delta}t \to 0}\frac{{\Delta}Q}{{\Delta}t}=\frac{dQ}{dt}$$
+A remarkable property of the human visual system makes it possible to represent colors for human perception with just three floating-point numbers. The tristimulus theory of color perception says that all visible SPDs can be accurately represented for human observers with three values, \( \mathcal{x}_{\lambda} \), , \( \mathcal{y}_{\lambda} \) and \( \mathcal{z}_{\lambda} \). Given an emissive SPD , these values are computed by integrating its product with the spectral matching curves \(X(\lambda)\), \(Y(\lambda)\), and \(Z(\lambda)\):
+Fourier analysis gave us one way of evaluating the quality of a 2D sampling pattern, but it took us only as far as being able to quantify the improvement from adding more evenly spaced samples in terms of the band-limited frequencies that could be represented
+Outside of Fourier analysis, mathematicians have developed a concept called discrepancy that can be used to evaluate the quality of a pattern of -dimensional sample positions.
++ Nvidia应用深度学习研究副总裁Bryan Catanzaro表示,原生分辨率不再是游戏中实现最大图形保真度的最佳解决方案,游戏图形行业在未来正朝着更加依赖AI图像重建和基于AI的图形渲染的方向发展。 ++ +