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cristy20398432011-08-11 01:31:50 +0000[diff] [blame]231<h1>Module fourier Methods</h1>
cristy72da67d2013-02-24 21:40:48 +0000[diff] [blame^]232<p class="navigation-index">[<a href="fourier.php#ForwardFourierTransformImage">ForwardFourierTransformImage</a> &bull; <a href="fourier.php#InverseFourierTransformImage">InverseFourierTransformImage</a>]</p>
cristya2c730b2011-02-15 15:19:16 +0000[diff] [blame]233
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]234<h2><a href="http://www.imagemagick.org/api/MagickCore/fourier_8c.html" id="ForwardFourierTransformImage">ForwardFourierTransformImage</a></h2>
235<div class="doc-section">
236
237<p>ForwardFourierTransformImage() implements the discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
238
239<p>The format of the ForwadFourierTransformImage method is:</p>
240
241<pre class="code">
242 Image *ForwardFourierTransformImage(const Image *image,
243 const MagickBooleanType modulus,ExceptionInfo *exception)
244</pre>
245
246<p>A description of each parameter follows:</p>
247
248<h5>image</h5>
249<p>the image.</p>
250
251<h5>modulus</h5>
252<p>if true, return as transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
253
254<h5>exception</h5>
255<p>return any errors or warnings in this structure.</p>
256
257 </div>
258<h2><a href="http://www.imagemagick.org/api/MagickCore/fourier_8c.html" id="InverseFourierTransformImage">InverseFourierTransformImage</a></h2>
259<div class="doc-section">
260
261<p>InverseFourierTransformImage() implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
262
263<p>The format of the InverseFourierTransformImage method is:</p>
264
265<pre class="code">
266 Image *InverseFourierTransformImage(const Image *magnitude_image,
267 const Image *phase_image,const MagickBooleanType modulus,
268 ExceptionInfo *exception)
269</pre>
270
271<p>A description of each parameter follows:</p>
272
273<h5>magnitude_image</h5>
274<p>the magnitude or real image.</p>
275
276<h5>phase_image</h5>
277<p>the phase or imaginary image.</p>
278
279<h5>modulus</h5>
280<p>if true, return transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
281
282<h5>exception</h5>
283<p>return any errors or warnings in this structure.</p>
284
285 </div>
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