extract the FFTJ folder into the plugins folder, then restart ImageJ.
FFTJ is a generalized ImageJ plugin for the calculation of Fourier Transforms. It handles forward and inverse transformations of arbitrary-sized three-dimensional (3D) volumes as well as single two-dimensional (2D) images. Details.
DeconvolutionJ effectively implements deconvolution based on a Regularized Wiener Filter, as described in Gonzales&Woods: “Digital Image Processing”, Chapter 5. It can handle arbitrary-sized three-dimensional (3D) volumes as well as single two-dimensional (2D) images. Details.
Authors: Lokesh Taxali (firstname.lastname@example.org) and Dr. Jesse Jin (email@example.com) Date: 2000/6/27 Limitations: Only works with 8-bit images Source: Log_Filter.java Installation: Download Log_Filter.class to the plugins
Author: Erik Lieng Date: 2002/10/01 Source: Gaussian_Filter.java Installation: Download Gaussian_Filter.class to the plugins folder and restart ImageJ. Description: This plugin calculates a 2D Gaussian filter.
Authors: Olivier Marchal (marchal_olivier at hotmail.fr) and Jerome Mutterer (jerome.mutterer at ibmp-ulp.u-strasbg.fr) History: 2005/02/14: First version 2009/10/13: Emil Martinec fixed a bug in convolution between