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Statistical features can support with valuable information beside a CCI-feature or a case-feature. Use this feature to get statistical properties of spectra resolved by pixels in the scene.

 

Function

Statistically derived properties of spectra are obtained. The resulting image describes statistical values by its gray values.
Statistical features are typically used as co-information together with a case- and/or CCI-Feature. Example: the discrimination of background of foreground often can be done very robust by means of the mean intensity feature. By streaming such a statistical information e.g. parallel to a CCI-feature (classification IDs), the client machine vision application might be able to distinguish foreground from background objects more robust.

User Interface

The data set plastics is loaded (the data set is selected in the project browser to the left). Per plastic group a spectra set is defined and are shown in the Selected Spectra graph as well as their originating pixel positions by colored markers in the Input view.
The model method Statistical Features is selected in the ribbon menu. The control panel of this method is shown lower right as well the result of the method is shown in the Output view.
The preprocessing method Intensity is selected in the ribbon menu. The statistical feature Mean is selected. Spectra are shown in the range ~1000-1700nm.
The pixel values of the output image correspond to the mean of all reflectance spectra in the range from 1000-1700nm. Therefore, the output corresponds to the relative reflectance degree of 3 plastic plates in the NIR-range (1000-1700nm).
Left hand sided, information to the loaded data set are available like the Statistics panel as well as descriptive parameters attached to the data set.

Method Parameters

Method parameters are shown in the panel to the lower left of the perspective.

Statistical feature selector

Select a feature of interest

Minimum

The output image corresponds to the statistical minimum value of spectra per pixel.

Maximum

The output image corresponds to the statistical maximum value of spectra per pixel.

Mean

The output image corresponds to the statistical mean value of spectra per pixel.

Dynamic

The output image corresponds to the statistical dynamic of spectra per pixel. The dynamic is the difference of maximum and minimum.

Work Flow

  • Select one of the statistical methods
  • E.g. apply preprocessing
  • Study the gained output image
  • Save the model for later usage (e.g. to setup the live streaming)

Mentioned in:

Found 4 search result(s) for "statistical feature".

Page: Hyperspectral imaging step by step (Manuals)
... pixel values. modelDyn1stDerplastics.png The statistical feature methods allows an extraction of information based on statistical methodology. Perprocessing 1st derivative was applyed to the data beforehands. The spectral dynamic is extracted ... class ID per taught material (e.g. per spectra set). Model a ...
Dec 11, 2019
Page: UDP Streaming Protocol Definition (Manuals)
... 3 (RGB). depends on the model, which was used to create the stream. e.g. a CCI feature will produce a color image stream with spectral size = 3 (RGB), a statistical feature will create a grayscale stream with spectral size = 1 15 uint8 Bytes per ...
Oct 10, 2019
Page: Quantitative Analysis of Ibuprofen Pills (Manuals)
... der" are potential candidates for a proper preprocessing when the extraction of the Ibuprofen content is aimed. Statistical Features judge the quality of spectra pillexploreuncertainties.png Various statistical feature can get selected out from the ribbon menu on the top of Perception Studios ...
Oct 10, 2019
Page: Exploratory analysis of plastics (Manuals)
... cube is visualized in form of a color or a monochrome image. The image information is obtained by applying a feature functions to the Hyperspectral cube. cubeprojection.png As default, the preview feature is selected (in the ribbons Feature group) and results in a color image. By selecting a statistical feature like Mean, the mean ...
Oct 10, 2019

 


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