RT-Splatting: a Gaussian splatting framework that tackles semi-transparent specular surfaces that exhibit both complex reflections and clear transmission by explicitly disentangling geometric occupancy from optical opacity.</p>\n","updatedAt":"2026-05-20T19:11:29.032Z","author":{"_id":"65819cd7f8a9cac49123f78f","avatarUrl":"https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/3C-0H3bQ59K8sU-xengsy.jpeg","fullname":"Ji Shi","name":"sjj118","type":"user","isPro":false,"isHf":false,"isHfAdmin":false,"isMod":false,"isUserFollowing":false}},"numEdits":0,"identifiedLanguage":{"language":"en","probability":0.8493139743804932},"editors":["sjj118"],"editorAvatarUrls":["https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/3C-0H3bQ59K8sU-xengsy.jpeg"],"reactions":[],"isReport":false}}],"primaryEmailConfirmed":false,"paper":{"id":"2605.18263","authors":[{"_id":"6a0df041d1ef9ecdf71c0e7f","name":"Ji Shi","hidden":false},{"_id":"6a0df041d1ef9ecdf71c0e80","name":"Xianghua Ying","hidden":false},{"_id":"6a0df041d1ef9ecdf71c0e81","name":"Bowei Xing","hidden":false},{"_id":"6a0df041d1ef9ecdf71c0e82","name":"Ruohao Guo","hidden":false},{"_id":"6a0df041d1ef9ecdf71c0e83","name":"Wenzhen Yue","hidden":false}],"mediaUrls":["https://cdn-uploads.huggingface.co/production/uploads/65819cd7f8a9cac49123f78f/qtZ1R9KKrmfMJ_bp6QYy7.mp4"],"publishedAt":"2026-05-18T00:00:00.000Z","submittedOnDailyAt":"2026-05-20T00:00:00.000Z","title":"RT-Splatting: Joint Reflection-Transmission Modeling with Gaussian Splatting","submittedOnDailyBy":{"_id":"65819cd7f8a9cac49123f78f","avatarUrl":"https://cdn-avatars.huggingface.co/v1/production/uploads/noauth/3C-0H3bQ59K8sU-xengsy.jpeg","isPro":false,"fullname":"Ji Shi","user":"sjj118","type":"user","name":"sjj118"},"summary":"3D Gaussian Splatting (3DGS) enables real-time novel view synthesis with high visual quality. However, existing methods struggle with semi-transparent specular surfaces that exhibit both complex reflections and clear transmission, often producing blurry reflections or overly occluded transmission. To address this, we present RT-Splatting, a framework that disentangles each Gaussian's geometric occupancy from its optical opacity. This factorization yields a unified surface-volume scene representation with a single set of Gaussian primitives. Our hybrid renderer interprets this representation both as a surface to capture high-frequency reflections and as a volume to preserve clear transmission. To mitigate the ambiguity in jointly optimizing reflection and transmission, we introduce Specular-Aware Gradient Gating, which suppresses misleading gradients from highly specular regions into the transmission branch, effectively reducing distracting floaters. Experiments on challenging semi-transparent scenes show that RT-Splatting achieves state-of-the-art performance, delivering high-fidelity reflections and clear transmission with real-time rendering. Moreover, our factorization naturally enables flexible scene editing. 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RT-Splatting: Joint Reflection-Transmission Modeling with Gaussian Splatting
Published on May 18
· Submitted by Ji Shi on May 20 Abstract
RT-Splatting introduces a novel 3D Gaussian Splatting framework that separates geometric occupancy from optical opacity to improve rendering of semi-transparent specular surfaces with high-fidelity reflections and transmission.
AI-generated summary
3D Gaussian Splatting (3DGS) enables real-time novel view synthesis with high visual quality. However, existing methods struggle with semi-transparent specular surfaces that exhibit both complex reflections and clear transmission, often producing blurry reflections or overly occluded transmission. To address this, we present RT-Splatting, a framework that disentangles each Gaussian's geometric occupancy from its optical opacity. This factorization yields a unified surface-volume scene representation with a single set of Gaussian primitives. Our hybrid renderer interprets this representation both as a surface to capture high-frequency reflections and as a volume to preserve clear transmission. To mitigate the ambiguity in jointly optimizing reflection and transmission, we introduce Specular-Aware Gradient Gating, which suppresses misleading gradients from highly specular regions into the transmission branch, effectively reducing distracting floaters. Experiments on challenging semi-transparent scenes show that RT-Splatting achieves state-of-the-art performance, delivering high-fidelity reflections and clear transmission with real-time rendering. Moreover, our factorization naturally enables flexible scene editing. The project page is available at https://sjj118.github.io/RT-Splatting.
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RT-Splatting: a Gaussian splatting framework that tackles semi-transparent specular surfaces that exhibit both complex reflections and clear transmission by explicitly disentangling geometric occupancy from optical opacity.
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Cite arxiv.org/abs/2605.18263 in a model README.md to link it from this page.
Cite arxiv.org/abs/2605.18263 in a dataset README.md to link it from this page.
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