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2D Fourier calculates the two-dimensional Fourier transform of an image. Color images are first transferred to black/white. The Fourier image shows the amplitude of the complex kvectors along kx and ky axes. In “complex” setting the App shows the real and imaginary parts of k in red and blue, respectively.

Selected regions of the Fourier image can brushed out, or selected spatial frequencies can be added, and the effect on the corresponding spatial image is presented.

Concept: Albert Polman and Ernst Jan Vesseur, FOM Institute AMOLF, Amsterdam (
Realization: Reinder Nijhoff (
Cartoon: Amolf/Tremani (

What's New in Version 1.4

- Improved resolution (4x) by using Apple's Accelerate framework.
- Export to camera roll.


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This app is designed for both iPhone and iPad
  • Free
  • Category: Education
  • Updated:
  • Version: 1.4
  • Size: 3.5 MB
  • Language: English
  • Developer:

Compatibility: Requires iOS 4.0 or later. Compatible with iPhone, iPad and iPod touch.

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