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://imagej.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.measure.Measurements
ADD_TO_OVERLAY, ALL_STATS, AREA, AREA_FRACTION, CENTER_OF_MASS, CENTROID, CIRCULARITY, ELLIPSE, FERET, INTEGRATED_DENSITY, INVERT_Y, KURTOSIS, LABELS, LIMIT, MAX_STANDARDS, MEAN, MEDIAN, MIN_MAX, MODE, NaN_EMPTY_CELLS, PERIMETER, RECT, SCIENTIFIC_NOTATION, SHAPE_DESCRIPTORS, SKEWNESS, SLICE, STACK_POSITION, STD_DEV
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, NO_UNDO_RESET, PARALLELIZE_IMAGES, PARALLELIZE_STACKS, ROI_REQUIRED, SNAPSHOT, STACK_REQUIRED, SUPPORTS_MASKING
Constructors Constructor Description
Modifier and Type Method Description
run(ImageProcessor ip)Filters use this method to process the image.
setup(java.lang.String arg, ImagePlus imp)This method is called once when the filter is loaded.
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).
public int setup(java.lang.String arg, ImagePlus imp)Description copied from interface:
PlugInFilterThis 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
PlugInFilter.FINAL_PROCESSINGflag, the setup method will be called again, this time with arg = "final" after all other processing is done.
public void run(ImageProcessor ip)Description copied from interface:
PlugInFilterFilters use this method to process the image. If the
PlugInFilter.DOES_STACKSflag was set, it is called for each slice in a stack. With
PlugInFilter.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
PlugInFilter.NO_IMAGE_REQUIREDflag and not the
PlugInFilter.DONEflag, run(ip) is called once with the argument
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.