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cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]214<h1>Module fourier Methods</h1>
cristy6f77f692011-02-15 15:31:39 +0000[diff] [blame]215<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]216
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]217<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]218<div class="doc-section">
219
220<p>ForwardFourierTransformImage() implements the discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
221
222<p>The format of the ForwadFourierTransformImage method is:</p>
223
224<pre class="code">
225 Image *ForwardFourierTransformImage(const Image *image,
226 const MagickBooleanType modulus,ExceptionInfo *exception)
227</pre>
228
229<p>A description of each parameter follows:</p>
230
231<h5>image</h5>
232<p>the image.</p>
233
234<h5>modulus</h5>
235<p>if true, return as transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
236
237<h5>exception</h5>
238<p>return any errors or warnings in this structure.</p>
239
240 </div>
cristy350dea42011-02-15 17:31:04 +0000[diff] [blame]241<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]242<div class="doc-section">
243
244<p>InverseFourierTransformImage() implements the inverse discrete Fourier transform (DFT) of the image either as a magnitude / phase or real / imaginary image pair.</p>
245
246<p>The format of the InverseFourierTransformImage method is:</p>
247
248<pre class="code">
249 Image *InverseFourierTransformImage(const Image *magnitude_image,
250 const Image *phase_image,const MagickBooleanType modulus,
251 ExceptionInfo *exception)
252</pre>
253
254<p>A description of each parameter follows:</p>
255
256<h5>magnitude_image</h5>
257<p>the magnitude or real image.</p>
258
259<h5>phase_image</h5>
260<p>the phase or imaginary image.</p>
261
262<h5>modulus</h5>
263<p>if true, return transform as a magnitude / phase pair otherwise a real / imaginary image pair.</p>
264
265<h5>exception</h5>
266<p>return any errors or warnings in this structure.</p>
267
268 </div>
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