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3DTV view generation using uncalibrated pure rotating and zooming cameras / Songkran Jarusirisawad in Signal processing. Image communication, Vol. 24 N° 1/2 (Janvier 2009) 

Public ISBD [article]  in Signal processing. Image communication > Vol. 24 N° 1/2 (Janvier 2009) . - pp. 17-30 Titre : 3DTV view generation using uncalibrated pure rotating and zooming cameras Type de document : texte imprimé Auteurs : Songkran Jarusirisawad, Auteur ; Hideo Saito, Auteur Article en page(s) : pp. 17-30 Note générale : Electronique Langues : Anglais (eng) Mots-clés : Free  viewpoint  video  View  interpolation  Projective  grid  space  Trifocal  tensor Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : This paper proposes a novel method for synthesizing free viewpoint video captured by uncalibrated pure rotating and zooming cameras. Neither intrinsic nor extrinsic parameters of our cameras are known. Projective grid space (PGS), which is the 3D space defined by the epipolar geometry of two basis cameras, is employed for weak camera calibration. Trifocal tensors are used to relate non-basis cameras to PGS. Given trifocal tensors in the initial frame, our method automatically computes trifocal tensors in the other frames. Scale invariant feature transform (SIFT) is used for finding corresponding points in a natural scene between the initial frame and the other frames. Finally, free viewpoint video is synthesized based on the reconstructed visual hull. In the experimental results, free viewpoint video captured by uncalibrated hand-held cameras is successfully synthesized using the proposed method. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...] [article] 3DTV view generation using uncalibrated pure rotating and zooming cameras [texte imprimé] / Songkran Jarusirisawad, Auteur ; Hideo Saito, Auteur . - pp. 17-30. Electronique Langues : Anglais (eng) in Signal processing. Image communication > Vol. 24 N° 1/2 (Janvier 2009) . - pp. 17-30 Mots-clés : Free  viewpoint  video  View  interpolation  Projective  grid  space  Trifocal  tensor Index. décimale : 621.382 Dispositifs électroniques utilisant les effets des corps solides. Dispositifs semi-conducteurs Résumé : This paper proposes a novel method for synthesizing free viewpoint video captured by uncalibrated pure rotating and zooming cameras. Neither intrinsic nor extrinsic parameters of our cameras are known. Projective grid space (PGS), which is the 3D space defined by the epipolar geometry of two basis cameras, is employed for weak camera calibration. Trifocal tensors are used to relate non-basis cameras to PGS. Given trifocal tensors in the initial frame, our method automatically computes trifocal tensors in the other frames. Scale invariant feature transform (SIFT) is used for finding corresponding points in a natural scene between the initial frame and the other frames. Finally, free viewpoint video is synthesized based on the reconstructed visual hull. In the experimental results, free viewpoint video captured by uncalibrated hand-held cameras is successfully synthesized using the proposed method. DEWEY : 361.382 ISSN : 0923-5965 En ligne : http://www.sciencedirect.com/science?_ob=PublicationURL&_tockey=%23TOC%235640%23 [...]