Opt Express. 2023 Feb 27;31(5):8953-8974. doi: 10.1364/OE.479715.
We present a method to capture the 7-dimensional light field structure, and translate it into perceptually-relevant information. Our spectral cubic illumination method quantifies objective correlates of perceptually relevant diffuse and directed light components, including their variations over time, space, in color and direction, and the environment's response to sky and sunlight. We applied it "in the wild", capturing how light on a sunny day differs between light and shadow, and how light varies over sunny and cloudy days. We discuss the added value of our method for capturing nuanced lighting effects on scene and object appearance, such as chromatic gradients.
我们提出了一种捕获 7 维光场结构并将其转换为感知相关信息的方法。我们的光谱立方照明方法量化了感知相关的漫射和定向光分量的客观关联，包括它们随时间、空间、颜色和方向的变化，以及环境对天空和阳光的响应。我们将其应用于“野外”，捕捉晴天时阳光和阴影之间的光线差异，以及晴天和阴天时光线的变化。我们讨论了我们的方法在捕捉场景和物体外观上细微的照明效果（如颜色梯度）方面的附加值。
