ij.plugin.filter
Class FFTFilter
java.lang.Object
ij.plugin.filter.FFTFilter
- All Implemented Interfaces:
- Measurements, PlugInFilter
public class FFTFilter
- extends java.lang.Object
- implements PlugInFilter, Measurements
This class implements the Process/FFT/Bandpass Filter command. It is based on
Joachim Walter's FFT Filter plugin at "http://rsb.info.nih.gov/ij/plugins/fft-filter.html".
2001/10/29: First Version (JW)
2003/02/06: 1st bugfix (works in macros/plugins, works on stacks, overwrites image(=>filter)) (JW)
2003/07/03: integrated into ImageJ, added "Display Filter" option (WSR)
2007/03/26: 2nd bugfix (Fixed incorrect calculation of filter from structure sizes, which caused
the real structure sizes to be wrong by a factor of 0.75 to 1.5 depending on the image size.)
Fields inherited from interface ij.plugin.filter.PlugInFilter |
CONVERT_TO_FLOAT, DOES_16, DOES_32, DOES_8C, DOES_8G, DOES_ALL, DOES_RGB, DOES_STACKS, DONE, FINAL_PROCESSING, KEEP_THRESHOLD, NO_CHANGES, NO_IMAGE_REQUIRED, NO_UNDO, PARALLELIZE_STACKS, ROI_REQUIRED, SNAPSHOT, STACK_REQUIRED, SUPPORTS_MASKING |
Fields inherited from interface ij.measure.Measurements |
AREA, AREA_FRACTION, CENTER_OF_MASS, CENTROID, CIRCULARITY, ELLIPSE, FERET, INTEGRATED_DENSITY, INVERT_Y, KURTOSIS, LABELS, LIMIT, MAX_STANDARDS, MEAN, MEDIAN, MIN_MAX, MODE, PERIMETER, RECT, SCIENTIFIC_NOTATION, SHAPE_DESCRIPTORS, SKEWNESS, SLICE, STACK_POSITION, STD_DEV |
Method Summary |
void |
run(ImageProcessor ip)
Filters use this method to process the image. |
int |
setup(java.lang.String arg,
ImagePlus imp)
This method is called once when the filter is loaded. |
ImageProcessor |
tileMirror(ImageProcessor ip,
int width,
int height,
int x,
int y)
Puts ImageProcessor (ROI) into a new ImageProcessor of size width x height y at position (x,y). |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
FFTFilter
public FFTFilter()
setup
public int setup(java.lang.String arg,
ImagePlus imp)
- Description copied from interface:
PlugInFilter
- This method is called once when the filter is loaded. 'arg',
which may be blank, is the argument specified for this plugin
in IJ_Props.txt or in the plugins.config file of a jar archive
containing the plugin. 'imp' is the currently active image.
This method should return a flag word that specifies the
filters capabilities.
For Plugin-filters specifying the FINAL_PROCESSING flag,
the setup method will be called again, this time with
arg = "final" after all other processing is done.
- Specified by:
setup
in interface PlugInFilter
run
public void run(ImageProcessor ip)
- Description copied from interface:
PlugInFilter
- Filters use this method to process the image. If the
SUPPORTS_STACKS flag was set, it is called for each slice in
a stack. With CONVERT_TO_FLOAT, the filter is called with
the image data converted to a FloatProcessor (3 times per
image for RGB images).
ImageJ will lock the image before calling
this method and unlock it when the filter is finished.
For PlugInFilters specifying the NO_IMAGE_REQUIRED flag
and not the DONE flag, run(ip) is called once with the
argument
null
.
- Specified by:
run
in interface PlugInFilter
tileMirror
public ImageProcessor tileMirror(ImageProcessor ip,
int width,
int height,
int x,
int y)
- Puts ImageProcessor (ROI) into a new ImageProcessor of size width x height y at position (x,y).
The image is mirrored around its edges to avoid wrap around effects of the FFT.