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cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]199<h1>Module fourier Methods</h1>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]200<p class="navigation-index">[<a href="#ForwardFourierTransformImage">ForwardFourierTransformImage</a> &bull; <a href="#InverseFourierTransformImage">InverseFourierTransformImage</a>]</p>
cristya2c730b2011-02-15 15:19:16 +0000[diff] [blame]201
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]202<h2><a href="http://www.imagemagick.org/api/MagickCore/fourier_8c.html" id="ForwardFourierTransformImage">ForwardFourierTransformImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]203<div class="doc-section">
204
205<p>ForwardFourierTransformImage() implements the discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
206
207<p>The format of the ForwadFourierTransformImage method is:</p>
208
209<pre class="code">
210 Image *ForwardFourierTransformImage(const Image *image,
211 const MagickBooleanType modulus,ExceptionInfo *exception)
212</pre>
213
214<p>A description of each parameter follows:</p>
215
216<h5>image</h5>
217<p>the image.</p>
218
219<h5>modulus</h5>
220<p>if true, return as transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
221
222<h5>exception</h5>
223<p>return any errors or warnings in this structure.</p>
224
225 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]226<h2><a href="http://www.imagemagick.org/api/MagickCore/fourier_8c.html" id="InverseFourierTransformImage">InverseFourierTransformImage</a></h2>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]227<div class="doc-section">
228
229<p>InverseFourierTransformImage() implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
230
231<p>The format of the InverseFourierTransformImage method is:</p>
232
233<pre class="code">
234 Image *InverseFourierTransformImage(const Image *magnitude_image,
235 const Image *phase_image,const MagickBooleanType modulus,
236 ExceptionInfo *exception)
237</pre>
238
239<p>A description of each parameter follows:</p>
240
241<h5>magnitude_image</h5>
242<p>the magnitude or real image.</p>
243
244<h5>phase_image</h5>
245<p>the phase or imaginary image.</p>
246
247<h5>modulus</h5>
248<p>if true, return transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
249
250<h5>exception</h5>
251<p>return any errors or warnings in this structure.</p>
252
253 </div>
cristya2c730b2011-02-15 15:19:16 +0000[diff] [blame]254
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