The commands on the Filter toolbar are listed below; click on the icon for more information.
Kernel Filters – invoke the Kernel Filter command, to sharpen or blur an image
FFT Filters – invoke the FFT Filter command (Fast Fourier Transform filters), to sharpen or blur an image
Unsharp Mask – invoke the Unsharp Mask command to sharpen an image
Digital Development - invoke the Digital Development Processing command, which emulates photographic development to enhance an image
Rank Filter – invoke the Rank filter processing command, which enhances structure in an image
Local-Adaptive Filter – invoke the Local Adaptive Filter command, which enhances images by sharpening details only in areas of low contrast
Rotational Gradient – apply a Rotational Gradient filter, which enhances radial structure in an image.
Wavelet – apply a Wavelet filter, in an image.
Deconvolve – sharpen an image by applying either Maximum Entropy or Richardson-Lucy deconvolution, mathematical techniques which undo the effect of systematic aberrations on an image..
Photons Wizard – invoke a wizard to assist you in determining the gain of your CCD camera.
Flatten Background – remove a background that varies in brightness across the image by subtracting a two-dimensional polynomial fit to the background at user-specified points.
Auto Flatten Background – automatically remove a background that varies in brightness across the image by subtracting a two-dimensional polynomial fit to the background at software-determined points.
Auto Remove Gradient – automatically remove any background gradient present in the image.