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cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]208<h1>Module fourier Methods</h1>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]209<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]210
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]211<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]212<div class="doc-section">
213
214<p>ForwardFourierTransformImage() implements the discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
215
216<p>The format of the ForwadFourierTransformImage method is:</p>
217
218<pre class="code">
219 Image *ForwardFourierTransformImage(const Image *image,
220 const MagickBooleanType modulus,ExceptionInfo *exception)
221</pre>
222
223<p>A description of each parameter follows:</p>
224
225<h5>image</h5>
226<p>the image.</p>
227
228<h5>modulus</h5>
229<p>if true, return as transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
230
231<h5>exception</h5>
232<p>return any errors or warnings in this structure.</p>
233
234 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]235<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]236<div class="doc-section">
237
238<p>InverseFourierTransformImage() implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
239
240<p>The format of the InverseFourierTransformImage method is:</p>
241
242<pre class="code">
243 Image *InverseFourierTransformImage(const Image *magnitude_image,
244 const Image *phase_image,const MagickBooleanType modulus,
245 ExceptionInfo *exception)
246</pre>
247
248<p>A description of each parameter follows:</p>
249
250<h5>magnitude_image</h5>
251<p>the magnitude or real image.</p>
252
253<h5>phase_image</h5>
254<p>the phase or imaginary image.</p>
255
256<h5>modulus</h5>
257<p>if true, return transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
258
259<h5>exception</h5>
260<p>return any errors or warnings in this structure.</p>
261
262 </div>
cristya2c730b2011-02-15 15:19:16 +0000[diff] [blame]263
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