Image-based relighting (IBL) is a technique to change the illumination of an image-based object/scene. In this paper, we define a representation called the reflected irradiance field which records the reflection from an object surface irradiated by a point light source that moves on a plane. This representation is dual to that of the light field. It synthesizes a novel image under a different illumination by interpolating and superimposing appropriate recorded samples. Furthermore, we study the minimum sampling problem of the reflected irradiance field, i.e., how many point light sources are needed during sampling. We find that there exists a geometry-independent bound for the sampling interval whenever the second-order derivatives of the surface BRDF and the minimum depth of the scene are bounded. This bound ensures that the error in the reconstructed image is controlled by a given tolerance, regardless of the geometry. Experiments on both synthetic and real surfaces are conducted to verify our analysis.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Relighting with the reflected irradiance field: representation, sampling and reconstruction


    Beteiligte:
    Zouchen Lin, (Autor:in) / Tien-Tsin Wong, (Autor:in) / Heung-Yeung Shum, (Autor:in)


    Erscheinungsdatum :

    2001-01-01


    Format / Umfang :

    882323 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Relighting with the Reflected Irradiance Field: Representation, Sampling and Reconstruction

    Lin, Z. / Wong, T.-T. / Shum, H.-Y. et al. | British Library Conference Proceedings | 2001


    Relighting with the Reflected Irradiance Field Representation, Sampling and Reconstruction

    Lin, Z. / Wong, T. T. / Shum, H. Y. | British Library Online Contents | 2002


    Relighting an airport runway

    Roell, F.G. | Tema Archiv | 1978


    EDITORIAL - Relighting the fire.

    Online Contents | 2005


    Face relighting with radiance environment maps

    Zhen Wen, / Zicheng Liu, / Huang, T.S. | IEEE | 2003