Method and means of spatial filtering

US5822466A · kind A · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Gregor Morfill · Birkenfeld, DE
• Herbert Scheingraber · Hersbruck, DE
• Gerda Wiedenmann · Hersbruck, DE

Key dates

• Filing date: Mar 18, 1996
• Grant date: Oct 13, 1998
• Expiry date: Mar 18, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T5/20
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

The invention relates to a method of spatial filtering a point distribution representing a structure buried in noise and each of the points of which are defined by n coordinate values of an n-dimensional space, wherein for each point the function representing the number of the points in an area around the point concerned as a function of a dimension of the area is established, and a scaling coefficient equal to the exponent (a) of a simple power function is determined which approximates as near as possible the function determined in step a) in a certain area having the dimension (d), furthermore the scaling coefficients of the points of a n-dimensional stochastic point distribution of a type equivalent to the point distribution to be filtered are determined, the difference between the scaling coefficients of the point distribution to be filtered and the scaling coefficients of the stochastic point distribution are determined, and the points, the scaling coefficients of which are contained in the difference and those more or less completely representing the structure free of noise are represented or further processed in at least a two-dimensional space.