研究目的
To develop an integrated lighting design system in VR that includes direct, indirect, and inverse lighting paradigms to provide an immersive, intuitive, and effective way for lighting design, addressing the limitations of current systems that only support direct lighting and require iterative fine-tuning.
研究成果
The proposed system successfully integrates multiple lighting design paradigms in VR, providing an intuitive and efficient interface. The iterative least squares approximation method allows for solving inverse lighting problems at interactive rates with good quality, reducing the trial-and-error process in lighting design.
研究不足
The method is computationally intensive and may not handle highly complex scenes in real-time; it relies on approximations that could sacrifice some quality for speed, and the VR experience is dependent on rendering performance.
1：Experimental Design and Method Selection:
The system integrates three lighting design paradigms (direct, indirect, inverse) in a VR environment. The inverse lighting problem is formulated as a constrained weighted linear least squares problem and solved using an iterative least squares approximation method to achieve interactive rates.
2：Sample Selection and Data Sources:
Surface sampling is performed in preprocessing to generate sample points with geometric data from object surfaces. User-painted lighting goals are sampled on these surfaces.
3：List of Experimental Equipment and Materials:
VR environment and controllers for interaction; computational hardware for solving inverse lighting problems.
4：Experimental Procedures and Operational Workflow:
Users can paint lighting goals on the scene; the system solves the inverse lighting problem by minimizing the error between goals and illumination, using a coarse-to-fine strategy to add lights if needed, and iteratively updating light intensities.
5：Data Analysis Methods:
The method involves solving linear least squares problems and iterative approximations to achieve lighting goals, with comparisons to ground truth setups for validation.
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