Siemens Aktiengesellschaft

Stefan Maetschke

Bernd Quaschner

Friedrich Erkens

A method of determining the orientation of subject data in a two-dimensional data set includes: determining a center of the subject data; determining angles from the center to each subject data; generating a frequency distribution based on the angles; and determining the orientation of the subject data based on the frequency distribution.

Determining the orientation of subject data in a two-dimensional data set

A system and method of separating subject data from background data in a signal data set includes generating a frequency distribution of the subject data and background data based on a characteristic; identifying a maximum of the frequency distribution; establishing a first threshold to one side of the maximum; establishing a second threshold to another side of the maximum; and assigning data outside the first and second thresholds as one of the subject data and the background data.

Method and apparatus for signal segmentation

A system and method evaluates a characteristic for suitability in classification of subjects. The system generates subject data including characteristic data and class data. The method includes arranging the subject data based on the characteristic data, and identifying the number of class changes from one class to another class in the arranged subject data. The number of class changes represents the suitability of the characteristic for classification of the subjects. The method further includes measuring the interval between class changes in the arranged subject data. The interval between class changes also represents the suitability of the characteristic for classification of the subjects.

System and method for evaluating characteristics for suitability in classification

A system and method of determining the quality of a spot weld based on a set of image data includes separating the weld data from the background data and estimating a diameter of a weld (e.g., the nugget diameter of a spot weld) based on the weld data. The image data (e.g., a digital image) represents an image of the weld and includes weld data and background data. The estimation indicates the quality of the weld. In one embodiment, the surface brightness of the image data attributable to the spot weld is used to estimate the inner diameter of the spot weld.

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Unterrieden, Germany

Stefan Maetschke