Improving 2D-3D Registration by Mutual Information using Gradient Maps

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dc.contributor.authorPalma, Gianpaoloen_US
dc.contributor.authorCorsini, Massimilianoen_US
dc.contributor.authorDellepiane, Matteoen_US
dc.contributor.authorScopigno, Robertoen_US
dc.contributor.editorEnrico Puppo and Andrea Brogni and Leila De Florianien_US
dc.date.accessioned2014-01-27T16:34:10Z
dc.date.available2014-01-27T16:34:10Z
dc.date.issued2010en_US
dc.description.abstractIn this paper we propose an extension for the algorithms of image-to-geometry registration by Mutual Information( MI) to improve the performance and the quality of the alignment. Proposed for the registration of multi modal medical images, in the last years MI has been adapted to align a 3D model to a given image by using different renderings of the model and a gray-scale version of the input image. A key aspect is the choice of the rendering process to correlate the 3D model to the image without taking into account the texture data and the lighting conditions. Even if several rendering types for the 3D model have been analyzed, in some cases the alignment fails for two main reasons: the peculiar reflection behavior of the object that we are not able to reproduce in the rendering of the 3D model without knowing the material characteristics of the object and the lighting conditions of the acquisition environment; the characteristics of the image background, especially non uniform background, that can degrade the convergence of the registration. To improve the quality of the registration in these cases we propose to compute the MI between the gradient map of the 3D rendering and the gradient map of the image in order to maximize the shared data between them.en_US
dc.description.seriesinformationEurographics Italian Chapter Conference 2010en_US
dc.identifier.isbn978-3-905673-80-7en_US
dc.identifier.urihttps://doi.org/10.2312/LocalChapterEvents/ItalChap/ItalianChapConf2010/089-094en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.2.10 [Vision and Scene Understanding]: Intensity, color, photometry, thresholding-I.3.7 [Three Dimensional Graphics and Realism]: Color, shading, shadowing and texture-I.4.8 [Scene Analysis]: Shading-I.4.1 [Digitization and Image Capture]: Imaging Geometry-I.4.3 [Enhancement]: Registrationen_US
dc.titleImproving 2D-3D Registration by Mutual Information using Gradient Mapsen_US
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