ITKThresholdImage

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Group (Subgroup)

ITKImageProcessing (ITKImageProcessing)

Description

Set image values to a user-specified value if they are below, above, or between simple threshold values.

ThresholdImageFilter sets image values to a user-specified "outside" value (by default, "black") if the image values are below, above, or between simple threshold values.

The available methods are:

ThresholdAbove() : The values greater than the threshold value are set to OutsideValue

ThresholdBelow() : The values less than the threshold value are set to OutsideValue

ThresholdOutside() : The values outside the threshold range (less than lower or greater than upper) are set to OutsideValue

Note that these definitions indicate that pixels equal to the threshold value are not set to OutsideValue in any of these methods

The pixels must support the operators >= and <=.

\par Wiki Examples:

\li All Examples

\li Threshold an image

Parameters

Name Type Description
Lower double Set/Get methods to set the lower threshold.
Upper double Set/Get methods to set the upper threshold.
OutsideValue double The pixel type must support comparison operators. Set the "outside" pixel value. The default value NumericTraits::ZeroValue() .

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 (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

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