Composition and Features:
Spanning 18 different indoor environments such as bedrooms, bathrooms, and living rooms, LightS is built on meticulously designed CAD models by professional architects. These models emphasize optimal light scattering effects within each scene. The dataset uniquely manipulates light intensities across three levels (high, normal, and low) to enhance the occurrence and observation of specularity — both direct and indirect. Direct specularity arises when light reflects off surfaces directly from a light source, while indirect specularity occurs through light reflected off other surfaces, such as mirrors.