We present a scheme for fast environment light estimation from the RGBD appearance of individual objects and their local image areas. Conventional inverse rendering is too computationally demanding for real-time applications, and the performance of purely learning-based techniques may be limited by the meager input data available from individual objects. To address these issues, we propose an approach that takes advantage of physical principles from inverse rendering to constrain the solution, while also utilizing neural networks to expedite the more computationally expensive portions of its processing, to increase robustness to noisy input data as well as to improve temporal and spatial stability. This results in a rendering-aware system that estimates the local illumination distribution at an object with high accuracy and in real time. With the estimated lighting, virtual objects can be rendered in AR scenarios with shading that is consistent to the real scene, leading to improved realism.

提出了一种方法，通过逆向渲染的物理原理来约束解决方案，同时利用神经网络来增强处理的计算能力，以提高对嘈杂输入数据的鲁棒性并实现高精度的目标物体光照估计，从而在AR情境下实现真实感增强。

基于物体的，考虑渲染的神经网络光照估计