ReCap: Better Gaussian Relighting with Cross-Environment Captures

3DGS-DR GS-IR GShader R3DG ReCap (ours) 3DGS-DR GS-IR R3DG GShader ReCap (ours) GT Learned Env. Map Relight (fireplace) Relight (forest) (a) Visual comparison of learned environment maps and relighting quality. (b) Average relighting PSNR across unseen environment maps. Figure 1. ReCap shows a significant advantage in reconstructing environment maps with accurate tones and color fidelity. Both qualitative and quantitative assessments show that ReCap achieves more realistic and consistent relighting results under a range of unseen lighting conditions.