T. A. Foley and D. A. Lane. Multi-valued volumetric visualization. In Proceedings: Visualization '91, pages 218 -- 225. IEEE Computer Society, 1991.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....images which can be composited together[CA91] The 29 textures and images can be obtained by operating on different parameters and integrated to reveal relationships. Foley and Lane describe various techniques that can be incorporated into a single image to visualize 3D multiparameter data sets[FL91] The techniques involve defining a surface or a geometric object in the volume and operating on that volume. By combining the operations in a single image, different parameters can be related to one another. Two dimensional vector visualization is also quite common. The most widespread method ....

T. A. Foley and D. A. Lane. Multi-valued volumetric visualization. In Proceedings: Visualization '91, pages 218 -- 225. IEEE Computer Society, 1991.

.... Another behavior that takes in a geometry(the iso surface) as input and colors it according to a stream value can be used to investigate a relationship between two parameters of a data set by showing the variation of one parameter over a surface on which the other parameter is constant as in [4]. The following composition illustrates these ideas: A spart with four streams: IsoThresh [ S1 ] Fnd1 ) Tag1 ) Val1 ) IsoSurf [ S1 ] Fnd1 ] Tag1 ] Val1 ] Obj1 ) AddColSurf [ S2 ] Fnd1 ] Obj1 ] Obj2 ) IsoThresh [ S3 ] Fnd2 ) Tag2 ) Val2 ) VecGlyph [ S4 ] Fnd2 ] Vec ) ....

T. A. Foley and D. A. Lane. Multi-valued volumetric visualization. In Proceedings: Visualization '91, pages 218 -- 225. IEEE Computer Society, 1991.

....using this shader is given in Figure 8. The data set is obtained from a global atmospheric model simulation, and gives the carbon dioxide concentrations in the atmosphere at a single time step in a full year s simulation. One of the multi volume visualization techniques described by Foley and Lane [9] has also been implemented using data shaders. To render the values that lie on a value probe, it is necessary to procedurally define the probe in the shading language. For example, it is straightforward to define a sphere within the volume inside of which all data samples are opaque. This ....

Foley, Thomas, and David Lane, "Multi-Valued Volumetric Visualization," Proceedings of Visualization '91, pp. 218-225, October 1991.

.... the work in visualization of uncertainty has been in the field of Geographic Information Systems, for which we refer the reader to [GBW94] or [WSF 95] We also mention that several techniques have been proposed for visualizing surfaces over surfaces and multi valued volumetric visualization [FL91, Nie87] but none of them seems to have addressed the question of visually comparing surfaces or visualizing geometric uncertainty. 3 Features of the System The geometric uncertainty visualization system that we have developed is written in C and GL library for SGI platforms using FORMS ....

T. A. Foley and D. A. Lane. Multi-valued volumetric visualization. In G. M. Nielson and L. Rosenblum, editors, Proceedings of Visualization '91, pages 218--225. IEEE, 1991.

.... [4, 12] Data shaders were first used to reimplement the original renderer s shading model, which includes features similar to those presented by Levoy [11] and Upson and Keeler [17] Other volume shading techniques, such as Sabella s HSV color mapping [16] Foley and Lane s value probes [6], and several experimental techniques have also been implemented using data shaders. Each of these data shaders is implemented in less than 75 lines of shading language code. Although the number of shaders that have been written thus far is small, the flexibility and power of data shaders is ....

Foley, T., and Lane, D., "Multi-Valued Volumetric Visualization," Proceedings of Visualization '91, pp. 218-225, October 1991.

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