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You can use inverse transformation (IFT) to transform an FT image back into a gray-value image. If you have used filters on the FT image, they will be taken into account in the inverse transformation. The bit depth of the resulting gray-value image (the IFT image) is the same as the bit depth of the source image. Note: Changes that you make to the source image or the FT image have an immediate effect on the IFT image. Use the Inverse FT See also Tool Window - Fourier Transform Creating inverse FT imagesUsing the "Fourier Transform" tool window1.Select the image that you want to transform in the document group or in the Explorer group of the Fourier Transform tool window. 2.In the Fourier Transform tool window, click the Inverse FT button. •The IFT image is computed from the FT image. •A new image window for the IFT image is automatically created. This image window is displayed in its own document group to the right of the source image and next to the FT image. This means that you can view the IFT image, the FT image and the source image at the same time. Note: If the IFT image doesn't automatically appear next to the source image, you may be in the document group's single frame view. In this case, switch back to the tile view. You can find more information on this topic here. •The inverse image is named IFT <consecutive number> of FT <consecutive number of the FT image> by default. The FT image's name is displayed in the Fourier Transform tool window and in the FT image's document title. •The source image, the FT image and the IFT image are displayed in the Explorer group in the Fourier Transform tool window. 3.If necessary, optimize the display in the Adjust Display tool window. Using the "Mode" menu command1.In addition to using the Inverse FT button, you can also create an IFT image from an FT image using the Image > Mode > 16 Bit / Channel command. 2.If necessary, optimize the display in the Adjust Display tool window. 4058 20032014 |
