Method filter

ij/src/main/java/ij/plugin/FFT.java:190–200

Does frequency domain fitering of the speciified image @param imp The image to be filtered. @param filter The filter, 32-bits (0-1) or 8-bits (0-255) @see #forward @see #multiply @see #inverse

(ImagePlus imp, ImageProcessor filter)

	 * @see #inverse
	*/
	public static void filter(ImagePlus imp, ImageProcessor filter) {
		Object obj = imp.getProperty("FHT");
		FHT fht = obj!=null&&(obj instanceof FHT)?(FHT)obj:null;
		if (fht!=null) {
			FFT.multiply(imp, filter);
			return;
		}
		ImagePlus imp2 = FFT.forward(imp);
		FFT.multiply(imp2, filter);
		imp.setProcessor(FFT.inverse(imp2).getProcessor());
	}

	/** Version of filter() that accepts an ImagePlus for the filter. */
	public static void filter(ImagePlus imp, ImagePlus filter) {