Use of Fourier transformation chest radiography

Författare/Upphovsman:

Generated by Kieran Maher using NIH Image.

Kreditera:

http://en.wikibooks.org/wiki/Image:NM13_10.jpg

Kort länk:

https://sewiki.info/b/3958a

Källa:

Wikimedia Commons

Upplösning:

614 x 638 Pixel (58386 Bytes)

Beskrivning:

The use of the FT and its inverse to remove unwarranted information from an image. (a) An image obtained by adding the sine wave and chest radiography images together with its equivalent Fourier spectrum in (b). The unwanted interference caused by the sinusoidal brightness pattern can be removed by editing the spatial frequency information as shown by the blackened areas in (c). The inverse FT then recovers the original chest image largely undistorted as shown in (d). Further refinement of the editing process would allow complete restoration of the image quality, in theory.

Licens:

Public domain