[
    {
        "id": "Habel_08_SSH",
        "type_id": "inproceedings",
        "tu_id": null,
        "repositum_id": null,
        "title": "Efficient Spherical Harmonics Lighting with the Preetham Skylight Model",
        "date": "2008-04",
        "abstract": "We present a fast and compact representation of a skylight model for spherical harmonics lighting, especially for outdoor scenes. This representation allows dynamically changing the sun position and weather conditions on a per frame basis. We chose the most used model in real-time graphics, the Preetham skylight model, because it can deliver both realistic colors and dynamic range and its extension into spherical harmonics can be used to realistically light a scene. We separate the parameters of the Preetham skylight models' spherical harmonics extension and perform a polynomial two-dimensional non-linear least squares fit for the principal parameters to achieve both negligible memory and computation costs. Additionally, we execute a domain specific Gibbs phenomena suppression to remove ringing artifacts.",
        "authors_et_al": false,
        "substitute": null,
        "main_image": {
            "description": "Sunset",
            "filetitle": "image",
            "main_file": false,
            "use_in_gallery": true,
            "access": "public",
            "image_width": 1024,
            "image_height": 768,
            "name": "Habel_08_SSH-image.jpg",
            "type": "image/jpeg",
            "size": 313779,
            "path": "Publication:Habel_08_SSH",
            "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image.jpg",
            "thumb_image_sizes": [
                16,
                64,
                100,
                175,
                300,
                600
            ],
            "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image:thumb{{size}}.png"
        },
        "sync_repositum_override": null,
        "repositum_presentation_id": null,
        "authors": [
            618,
            706,
            193
        ],
        "booktitle": "Eurographics 2008 - Short Papers",
        "editor": "Katerina Mania and Erik Reinhard",
        "issn": "1017-4656",
        "lecturer": [
            618
        ],
        "location": "Crete, Greece",
        "pages_from": "119",
        "pages_to": "122",
        "publisher": "Eurographics Association",
        "research_areas": [
            "Rendering"
        ],
        "keywords": [
            "Natural Phenomena",
            "Spherical Harmonics",
            "Skylight"
        ],
        "weblinks": [],
        "files": [
            {
                "description": "Sunset",
                "filetitle": "image",
                "main_file": false,
                "use_in_gallery": true,
                "access": "public",
                "image_width": 1024,
                "image_height": 768,
                "name": "Habel_08_SSH-image.jpg",
                "type": "image/jpeg",
                "size": 313779,
                "path": "Publication:Habel_08_SSH",
                "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image.jpg",
                "thumb_image_sizes": [
                    16,
                    64,
                    100,
                    175,
                    300,
                    600
                ],
                "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-image:thumb{{size}}.png"
            },
            {
                "description": null,
                "filetitle": "implementation",
                "main_file": false,
                "use_in_gallery": false,
                "access": "public",
                "name": "Habel_08_SSH-implementation.rar",
                "type": "application/x-rar",
                "size": 147898,
                "path": "Publication:Habel_08_SSH",
                "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-implementation.rar",
                "thumb_image_sizes": []
            },
            {
                "description": "Sky-SH",
                "filetitle": "Movie",
                "main_file": false,
                "use_in_gallery": false,
                "access": "public",
                "name": "Habel_08_SSH-Movie.wmv",
                "type": "text/plain",
                "size": 6629409,
                "path": "Publication:Habel_08_SSH",
                "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-Movie.wmv",
                "thumb_image_sizes": []
            },
            {
                "description": "Efficient Spherical Harmonics Lighting with the Preetham Skylight Model",
                "filetitle": "Preprint",
                "main_file": true,
                "use_in_gallery": false,
                "access": "public",
                "name": "Habel_08_SSH-Preprint.pdf",
                "type": "application/pdf",
                "size": 992797,
                "path": "Publication:Habel_08_SSH",
                "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-Preprint.pdf",
                "thumb_image_sizes": [
                    16,
                    64,
                    100,
                    175,
                    300,
                    600
                ],
                "thumb_url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/Habel_08_SSH-Preprint:thumb{{size}}.png"
            }
        ],
        "projects_workgroups": [
            "Treelumination"
        ],
        "url": "https://www.cg.tuwien.ac.at/research/publications/2008/Habel_08_SSH/",
        "__class": "Publication"
    }
]