Eigentool Smooth
Home Eigentool Venograph Eigentool Restoration Eigentool Orthogonal Views Eigentool Smooth Eigentool Deformable Contours Eigentool Segmentation Eigentool Image Plot Eigentool Iso-Data Eigentool Substance (Browsers) Eigentool Substance (Images) Eigentool Math Eigentool Dicom Header Eigentool Simulations Eigentool External Programs Deformable Contours (3d) Eigentool Registration Eigentool Spectroscopy

 

Up

 

 

Smooth Dialog

Use this dialog to apply temporal and/or spatial kernels on images.  (reference)

bullet

Example Smoothing a Set of Images

  1. Load a set of images. They can be from the same spatial location or same scanning parameters of differing locations.
  2. Select Spatial processing.
  3. Unselect Temporal processing.
  4. Enter values for the kernel elements.
  5. Unselect Background (zero) pixels. If disabled, zero pixels are not incuded in the processing of non-zero pixels.
  6. Select No overwrite to put results in new browser.
  7. Press Smooth to apply the kernel to the selected images.
bullet

Dialog Items
bullet

Median

Press Median to smooth the selected image(s) by finding the median value in each neighborhood.

bullet

Max

Press Max to smooth the selected image(s) by finding the maximum value in each neighborhood.

bullet

Mode

Press Mode to smooth the selected image(s) by finding the most frequent value in each neighborhood.

bullet

Texture (reference)

Press Texture to apply the texture filters to the selected image(s).

bulletSelect Multi-Wavelet 1, the only texture method currently available.
bullet

XxX

Press XxX to create spatially smoothed image(s) using a X x X low-pass filter. This method uses an fft to decrease computation time.

Filter Size
bulletSelect 9x9 to use a 9 x 9 low-pass filter.
bulletSelect 17x17 to use a 17 x 17 low-pass filter.
bulletSelect 33x33 to use a 33 x 33 low-pass filter.
bulletSelect 65x65 to use a 65 x 65 low-pass filter.
bulletSelect 129x129 to use a 129 x 129 low-pass filter.
bulletSelect 257x257 to use a 257 x 257 low-pass filter.
bulletSelect 513x513 to use a 513 x 513 low-pass filter.

Iterations

bulletSelect n to perform the X x X low-pass filter n times.

Slice Values
bullet

Enter the minimum gray level value to be used in Lower.  Enter the maximum gray level value to be used in Upper.

Note

All other gray levels will be treated as background and replaced with the average value of the included gray levels in the image.

bullet

Overwrite Options
bulletSelect No Overwrite to display the result images in a new browser
bulletSelect Overwrite to replace the source images with the result images.
bulletSelect Divide to divide the source images by the result images, replacing the source images.  The result of the smooth will be displayed in a new browser.

Note

The Divide option available for X x X, 1 iteration only.

bullet

Background

Select Background to include zero pixels in the smooth operation, disable to ignore zero pixels in the smooth operation.

Note

For X x X, the background is defined as the values outside the lower, upper range provided by the user.

bullet

Kernel Entry

Enter the temporal and/or spatial smoothing parameters in the spaces provided.

bullet

Normalize

Select Normalize to adjust the smooth mask to have a mean value of 1.

bullet

Neighborhood eta

Enter a value, in eta, for the distance between pixel gray levels for a pixel to be included in smooth of the central pixel.

bullet

Smooth

Press Smooth to apply the temporal andor spatial kernel to the selected images.

bullet

Temporal/Spatial Selection
bulletSelect Temporal to enable temporal smoothing.
bulletSelect Spatial to enable spatial smoothing.

bullet

Kernel
bulletSelect User to set the spatial smooth mask to a 3x3 constant 1 mask.
bulletSelect Sobel-row to set the spatial smooth mask to a 3x3 Sobel row mask.
bulletSelect Sobel-column to set the spatial smooth mask to a 3x3 Sobel column mask.
bulletSelect Prewitt-row to set the spatial smooth mask to a 3x3 Prewitt row mask.
bulletSelect Prewitt-column to set the spatial smooth mask to a 3x3 Prewitt column mask.
bulletSelect Roberts-row to set the spatial smooth mask to a 3x3 Roberts row mask.
bulletSelect Roberts-column to set the spatial smooth mask to a 3x3 Roberts column mask.
bulletSelect Laplacian-1 to set the spatial smooth mask to a 3x3 Laplacian mask (type 1).
bulletSelect Laplacian-2 to set the spatial smooth mask to a 3x3 Laplacian mask (type 2).
bulletSelect Laplacian-3 to set the spatial smooth mask to a 3x3 Laplacian mask (type 3).
bulletSelect Gaussian-3x3 to set the spatial smooth mask to a 3x3 Gaussian mask.
bulletSelect Gaussian-5x5 to set the spatial smooth mask to a 5x5 Gaussian mask.
bulletSelect Low-Pass-1 to set the spatial smooth mask to a 3x3 Low-Pass (type 1) mask.
bulletSelect Low-Pass-2 to set the spatial smooth mask to a 3x3 Low-Pass (type 2) mask.
bulletSelect Low-Pass-3 to set the spatial smooth mask to a 3x3 Low-Pass (type 3) mask.
bulletSelect High-Pass-1 to set the spatial smooth mask to a 3x3 High-Pass (type 1) mask.
bulletSelect High-Pass-2 to set the spatial smooth mask to a 3x3 High-Pass (type 2) mask.
bulletSelect High-Pass-3 to set the spatial smooth mask to a 3x3 High-Pass (type 3) mask.

bullet

Direction
bulletSelect 0 to rotate the kernel by 0 degrees before applying the kernel to the selected image(s).
bulletSelect +45 to rotate the kernel by +45 degrees before applying the kernel to the selected image(s).
bulletSelect +90 to rotate the kernel by +90 degrees before applying the kernel to the selected image(s).
bulletSelect +135 to rotate the kernel by +135 degrees before applying the kernel to the selected image(s).
bulletSelect +180 to rotate the kernel by +180 degrees before applying the kernel to the selected image(s).
bulletSelect -135 to rotate the kernel by -135 degrees before applying the kernel to the selected image(s).
bulletSelect -90 to rotate the kernel by -90 degrees before applying the kernel to the selected image(s).
bulletSelect -45 to rotate the kernel by -45 degrees before applying the kernel to the selected image(s).
bulletSelect All to rotate the kernel by all degrees, in turn, before applying the kernel to the selected image(s).

bullet

Neighborhood Size
bulletSelect 3 x 3 to define a 3 row x 3 column neighborhood..
bulletSelect 5 x 5 to define a 5 row x 5 column neighborhood..

bullet

Repeat

Press Repeat to perform smooth on other browsers or files.

Note

Previous results of repeat processing need to be deleted manually for images saved in Dicom format.

bullet

Cancel

Press Cancel to remove the Smooth dialog.

bullet

Help

Press Help to display help for the Smooth dialog.

Back to Eigentool

[Home] [Eigentool Getting Started] [Dual Boot PC] [Eigentool File Operations] [Eigentool Region of Interest] [Eigentool Tools] [Eigentool Histogram] [Eigentool Information] [Eigentool Link Displays/Browsers] [Eigentool Image Display] [Eigentool Image Selection] [Eigentool User Resources] [Eigentool Project Instructions] [Eigentool Release Notes] [Eigentool Copyright] [Eigentool Acknowledgements]
Copyright © 2001,2002 Radiology Research at Henry Ford Health System
Last modified: 01/17/05