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- KurzbeschreibungImages contain information about the spatial properties of the scene they depict. When coupled with suitable assumptions, images can be used to infer thr- dimensional information. For instance, if the scene contains objects made with homogeneous material, such as marble, variations in image intensity can be - sociated with variations in shape, and hence the &8220;shading&8221; in the image can be exploited to infer the &8220;shape&8221; of the scene (shape from shading). Similarly, if the scene contains (statistically) regular structures, variations in image intensity can be used to infer shape (shape from textures). Shading, texture, cast shadows, - cluding boundaries are all &8220;cues&8221; that can be exploited to infer spatial properties of the scene from a single image, when the underlying assumptions are sat- ?ed. In addition, one can obtain spatial cues from multiple images of the same scene taken with changing conditions. For instance, changes in the image due to a moving light source are used in &8220;photometric stereo,&8221; changes in the image due to changes in the position of the cameras are used in &8220;stereo,&8221; &8220;structure from motion,&8221; and &8220;motion blur. &8221; Finally, changes in the image due to changes in the geometry of the camera are used in &8220;shape from defocus. &8221; In this book, we will concentrate on the latter two approaches, motion blur and defocus, which are referred to collectively as &8220;accommodation cues.
- AutorPaolo Favaro,Stefano Soatto
- Seiten249 Seiten
- Gewicht404 g
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