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Figure 4 | Pacific Journal of Mathematics for Industry

Figure 4

From: Visual data mining based on differential topology: a survey

Figure 4

Examples of contour trees extracted from discrete samples on functions R 2 Rand R 3 R. (a) A digital elevation model around Hakone area, which contains a crater lake (Lake Ashi) surrounded by mountains [17]. (b) Voxel samples at a 3D grid in a volume data, which is obtained through a simulation of the probability distribution of a nucleon in the atomic nucleus 16O[18].

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