In this case, a single projection cannot be satisfactory and an interactive rendering tool must be used to obtain successive projections of the data in arbitrary directions using transparency filters. Unlike a single 2D image, which can be rendered and interpreted straightforwardly on a screen, a 3D stack needs to be processed to be displayed.Īn image stack can be employed to image a full 3D object. Furthermore, it is common nowadays to image the same preparation repetitively at various depths to obtain a three-dimensional (3D) image under the form of a stack of two-dimensional (2D) images. Cell biologists routinely use fluorescence microscopy to observe spatial organization of organelles, co-localization of vesicles or to study the impact of gene expression or small compounds on cell morphology 1, 2, 3, 4.
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