PCA model

Unsupervised PCA model

Parameters

Number of components

The number of component you want to detect and visualize.

Pretreatments

In top-down applied order ⬇️ , meaning Savitzky-Golay is applied first then Derivative and so on.

• Savitzky-Golay

• Derivative

• SNV (Standard Normal Variate)

• Logarithm

• Center

• UV (Unit Variance) scaling

For more on each type of pretreatment see: Pretreatments

Smooth

Smooth prediction result using median filter kernel

• None

  • No Smoothing prediction.

• Low

  • Smoothing using median filter kernel with 5x5 pixel box

• Medium

  • Smoothing using median filter kernel with 10x10 pixel box

• High

  • Smoothing using median filter kernel with 15x15 pixel box