Fuzzy Set Visualization Method and Its Application in Medical Data Visualization

Abstract

The invention discloses a fuzzy set visualization method. The method comprises the following steps of: 1, mapping each element and a set center in a fuzzy set into points with colors and transparencies, and initializing geometric positions of the points; 2, optimizing the positions of the element points and the set center point; 3, establishing a disperse triangular mesh passing through the points by using Delaunay triangular mesh generation by taking the optimized element points and set center point and the boundary of a display medium as constraints; and 4, calculating color and transparency distribution of each vertex of the triangular mesh, and carrying out coloring according to the calculation result. The invention furthermore discloses an application of the method to the aspect of medical data visualization. Compared with the prior art, the method disclosed by the invention is capable of sufficiently utilizing geometric color and transparency information to display the information in fuzzy set more clearly and visually in a schematic form.

Description

technical field [0001] The invention relates to a fuzzy set visualization method and its application in medical data visualization. Background technique [0002] Due to the complexity of human body systems and unavoidable errors in medical testing equipment, medical data often contain certain uncertainties. The traditional medical data presentation methods focus more on deterministic data. In consultation, telemedicine, and patient communication, it is easy to cause misunderstanding to express uncertain medical data in the form of a definite chart, which hinders the objectivity of diagnosis and communication in medical treatment. cause unnecessary trouble. Therefore, it is necessary to visualize these uncertain medical data. [0003] According to the characteristics of uncertainty data, [A.M.MacEachren, R.E.Roth, J.F.O'Brien, B.Li, D.Swingley and M.Gahegan, Visual Semiotics & Uncertainty Visualization: An Empirical Study, IEEE Transactions on Visualization and Computer Gra...

AI Technical Summary

Problems solved by technology

Since fuzzy sets are composed of pairs of elements and their belonging functions, the traditional method of storing and displaying fuzzy sets is to simply list or list these pairs, which lacks intuition

Especially when the amount of data increases, it is not easy for users to find key information from the full-screen data, such as which of any two elements has a greater degree of belonging to the set, and whether there are many elements with a degree of belonging to the set greater than 0.5, etc. Wait

[0005] The existing fuzzy set visualization method [Y.Park, J.Park, Disk diagram: An interactive visualization technique of fuzzy set operations for the analysis of fuzzydata, Information Visualization 9,3(2010), 220-232] uses a circular diagram, This visualization method is not suitable for fuzzy sets with multiple membership functions of 1. It is prone to occlusion when the number of elements increases and the membership function values ​​are similar.

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