Visual hull (original) (raw)
A visual hull is a geometric entity created by shape-from-silhouette 3D reconstruction technique introduced by A. Laurentini. This technique assumes the foreground object in an image can be separated from the background. Under this assumption, the original image can be thresholded into a foreground/background binary image, which we call a silhouette image. The foreground mask, known as a silhouette, is the 2D projection of the corresponding 3D foreground object. Along with the camera viewing parameters, the silhouette defines a back-projected generalized cone that contains the actual object. This cone is called a silhouette cone. The upper right thumbnail shows two such cones produced from two silhouette images taken from different viewpoints. The intersection of the two cones is called a
| Property | Value |
|---|---|
| dbo:abstract | A visual hull is a geometric entity created by shape-from-silhouette 3D reconstruction technique introduced by A. Laurentini. This technique assumes the foreground object in an image can be separated from the background. Under this assumption, the original image can be thresholded into a foreground/background binary image, which we call a silhouette image. The foreground mask, known as a silhouette, is the 2D projection of the corresponding 3D foreground object. Along with the camera viewing parameters, the silhouette defines a back-projected generalized cone that contains the actual object. This cone is called a silhouette cone. The upper right thumbnail shows two such cones produced from two silhouette images taken from different viewpoints. The intersection of the two cones is called a visual hull, which is a bounding geometry of the actual 3D object (see the bottom right thumbnail). When the reconstructed geometry is only used for rendering from a different viewpoint, the implicit reconstruction together with rendering can be done using graphics hardware. (en) |
| dbo:thumbnail | wiki-commons:Special:FilePath/SilhouetteCones.jpg?width=300 |
| dbo:wikiPageID | 7692767 (xsd:integer) |
| dbo:wikiPageLength | 2669 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1062736419 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Bounding_volume dbr:Convex_hull dbr:File:SilhouetteCones.jpg dbr:File:VisualHull.jpg dbr:3D_reconstruction dbr:3D_reconstruction_from_multiple_images dbc:3D_imaging dbc:Computer_graphics dbc:Geometry_in_computer_vision dbc:Photogrammetry dbc:Projective_geometry dbr:Foreground_detection dbr:Tomographic_reconstruction dbc:Convex_hull_algorithms dbr:Touchscreen dbr:Generalized_cone |
| dbp:wikiPageUsesTemplate | dbt:Citation_needed dbt:Expand_section dbt:Multiple_issues dbt:One_source dbt:Primary_sources dbt:Reflist dbt:Computer_vision dbt:Mixed_reality |
| dct:subject | dbc:3D_imaging dbc:Computer_graphics dbc:Geometry_in_computer_vision dbc:Photogrammetry dbc:Projective_geometry dbc:Convex_hull_algorithms |
| gold:hypernym | dbr:Entity |
| rdf:type | dbo:Organisation |
| rdfs:comment | A visual hull is a geometric entity created by shape-from-silhouette 3D reconstruction technique introduced by A. Laurentini. This technique assumes the foreground object in an image can be separated from the background. Under this assumption, the original image can be thresholded into a foreground/background binary image, which we call a silhouette image. The foreground mask, known as a silhouette, is the 2D projection of the corresponding 3D foreground object. Along with the camera viewing parameters, the silhouette defines a back-projected generalized cone that contains the actual object. This cone is called a silhouette cone. The upper right thumbnail shows two such cones produced from two silhouette images taken from different viewpoints. The intersection of the two cones is called a (en) |
| rdfs:label | Visual hull (en) |
| owl:sameAs | freebase:Visual hull wikidata:Visual hull https://global.dbpedia.org/id/4xvKc |
| prov:wasDerivedFrom | wikipedia-en:Visual_hull?oldid=1062736419&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/SilhouetteCones.jpg wiki-commons:Special:FilePath/VisualHull.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:Visual_hull |
| is dbo:wikiPageWikiLink of | dbr:Bounding_volume dbr:Cone dbr:Convex_hull dbr:3D_scanning dbr:Touchscreen |
| is foaf:primaryTopic of | wikipedia-en:Visual_hull |
