Adept AdeptSight User Guide - Manual (Page 430)

Filtering Operations
Gaussian Filter
The Gaussian operation acts like a low pass filter. This has the effect of blurring the image.
Gaussian filters are designed to remove noise. The kernel size can be 3, 5 or 7. The kernels
used by the Image Processing Tool are shown in the following figure.
Gaussian Filtering Kernels
Horizontal Prewitt Filter
The Horizontal Prewitt operation acts like a gradient filter. This has the effect of highlighting
horizontal edges (gradients) in the image. The kernel size used is 3 and it is shown in the fol-
lowing figure. The absolute clipping method is usually used with this filtering operation.
Horizontal Prewitt Filtering Kernel
Vertical Prewitt Filter
The Vertical Prewitt operation acts like a gradient filter. This has the effect of highlighting ver-
tical edges (gradients) in the image. The kernel size used is 3 and it is shown in the following
figure. The absolute clipping method is usually used with this filtering operation.
AdeptSight User's Guide, Version 3.2.x, Updated: 8/23/2012
Page 430