ITKZeroCrossingImage
====================
Group (Subgroup)¶
ITKImageProcessing (ITKImageProcessing)
Description¶
This filter finds the closest pixel to the zero-crossings (sign changes) in a signed itk::Image .
Pixels closest to zero-crossings are labeled with a foreground value. All other pixels are marked with a background value. The algorithm works by detecting differences in sign among neighbors using city-block style connectivity (4-neighbors in 2d, 6-neighbors in 3d, etc.).
\par Inputs and Outputs The input to this filter is an itk::Image of arbitrary dimension. The algorithm assumes a signed data type (zero-crossings are not defined for unsigned data types), and requires that operator>, operator<, operator==, and operator!= are defined.
\par
The output of the filter is a binary, labeled image of user-specified type. By default, zero-crossing pixels are labeled with a default "foreground" value of itk::NumericTraits
\par Parameters There are two parameters for this filter. ForegroundValue is the value that marks zero-crossing pixels. The BackgroundValue is the value given to all other pixels.
\see Image
\see Neighborhood
\see NeighborhoodOperator
\see NeighborhoodIterator
\par Wiki Examples:
\li All Examples
\li Find zero crossings in a signed image
Parameters¶
| Name | Type | Description |
|---|---|---|
| ForegroundValue | int | Set/Get the label value for zero-crossing pixels. |
| BackgroundValue | int | Set/Get the label value for non-zero-crossing pixels. |
Required Geometry¶
Image
Required Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Cell Attribute Array | None | N/A | (1) | Array containing input image |
Created Objects¶
| Kind | Default Name | Type | Component Dimensions | Description |
|---|---|---|---|---|
| Cell Attribute Array | None | uint8_t | (1) | Array containing filtered image |
References¶
[1] T.S. Yoo, M. J. Ackerman, W. E. Lorensen, W. Schroeder, V. Chalana, S. Aylward, D. Metaxas, R. Whitaker. Engineering and Algorithm Design for an Image Processing API: A Technical Report on ITK - The Insight Toolkit. In Proc. of Medicine Meets Virtual Reality, J. Westwood, ed., IOS Press Amsterdam pp 586-592 (2002). [2] H. Johnson, M. McCormick, L. Ibanez. The ITK Software Guide: Design and Functionality. Fourth Edition. Published by Kitware Inc. 2015 ISBN: 9781-930934-28-3 [3] H. Johnson, M. McCormick, L. Ibanez. The ITK Software Guide: Introduction and Development Guidelines. Fourth Edition. Published by Kitware Inc. 2015 ISBN: 9781-930934-27-6
Example Pipelines¶
License & Copyright¶
Please see the description file distributed with this plugin.
DREAM3D Mailing Lists¶
If you need more help with a filter, please consider asking your question on the DREAM3D Users mailing list: https://groups.google.com/forum/?hl=en#!forum/dream3d-users