A realistically inserted virtual object in the real-time physical environment is a desirable feature in augmented reality (AR) applications and mixed reality (MR) in general. This problem is considered a vital research area in computer graphics, a field that is experiencing ongoing discovery. The algorithms and methods used to obtain dynamic and real-time illumination measurement, estimating, and rendering of augmented reality scenes are utilized in many applications to achieve a realistic perception by humans. We cannot deny the powerful impact of the continuous development of computer vision and machine learning techniques accompanied by the original computer graphics and image processing methods to provide a significant range of novel AR/MR techniques. These techniques include methods for light source acquisition through image-based lighting or sampling, registering and estimating the lighting conditions, and composition of global illumination. In this review, we discussed the pipeline stages with the details elaborated about the methods and techniques that contributed to the development of providing a photo-realistic rendering, visual coherence, and interactive real-time illumination results in AR/MR.

中文翻译：

---

真实感增强/混合现实的实时照明和视觉连贯性

在实时物理环境中真实插入的虚拟对象通常是增强现实 (AR) 应用程序和混合现实 (MR) 的理想功能。这个问题被认为是计算机图形学的一个重要研究领域，这个领域正在经历不断的发现。用于获得增强现实场景的动态和实时照明测量、估计和渲染的算法和方法在许多应用中被用于实现人类的真实感知。我们不能否认计算机视觉和机器学习技术的不断发展，伴随着原始的计算机图形和图像处理方法的强大影响，提供了大量新颖的 AR/MR 技术。这些技术包括通过基于图像的照明或采样来获取光源的方法、记录和估计照明条件以及全局照明的组合。在这篇评论中，我们讨论了流程阶段，并详细阐述了有助于在 AR/MR 中提供照片级逼真渲染、视觉连贯性和交互式实时照明结果的方法和技术。