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224
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]225<h1>Module fourier Methods</h1>
cristyd8833bf2013-02-24 22:14:53 +0000[diff] [blame]226<p class="navigation-index">[<a href="fourier.html#ForwardFourierTransformImage">ForwardFourierTransformImage</a> &bull; <a href="fourier.html#InverseFourierTransformImage">InverseFourierTransformImage</a>]</p>
cristya2c730b2011-02-15 15:19:16 +0000[diff] [blame]227
cristy20398432011-08-11 01:31:50 +0000[diff] [blame]228<h2><a href="http://www.imagemagick.org/api/MagickCore/fourier_8c.html" id="ForwardFourierTransformImage">ForwardFourierTransformImage</a></h2>
229<div class="doc-section">
230
231<p>ForwardFourierTransformImage() implements the discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
232
233<p>The format of the ForwadFourierTransformImage method is:</p>
234
235<pre class="code">
236 Image *ForwardFourierTransformImage(const Image *image,
237 const MagickBooleanType modulus,ExceptionInfo *exception)
238</pre>
239
240<p>A description of each parameter follows:</p>
241
242<h5>image</h5>
243<p>the image.</p>
244
245<h5>modulus</h5>
246<p>if true, return as transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
247
248<h5>exception</h5>
249<p>return any errors or warnings in this structure.</p>
250
251 </div>
252<h2><a href="http://www.imagemagick.org/api/MagickCore/fourier_8c.html" id="InverseFourierTransformImage">InverseFourierTransformImage</a></h2>
253<div class="doc-section">
254
255<p>InverseFourierTransformImage() implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
256
257<p>The format of the InverseFourierTransformImage method is:</p>
258
259<pre class="code">
260 Image *InverseFourierTransformImage(const Image *magnitude_image,
261 const Image *phase_image,const MagickBooleanType modulus,
262 ExceptionInfo *exception)
263</pre>
264
265<p>A description of each parameter follows:</p>
266
267<h5>magnitude_image</h5>
268<p>the magnitude or real image.</p>
269
270<h5>phase_image</h5>
271<p>the phase or imaginary image.</p>
272
273<h5>modulus</h5>
274<p>if true, return transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
275
276<h5>exception</h5>
277<p>return any errors or warnings in this structure.</p>
278
279 </div>
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