Popular recipes tagged "image_processing" and "math" but not "paperwhite"http://code.activestate.com/recipes/tags/image_processing-paperwhite+math/2016-07-31T22:50:28-07:00ActiveState Code RecipesImage Projection Onto Sphere (Python)
2016-07-31T22:50:28-07:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/580695-image-projection-onto-sphere/
<p style="color: grey">
Python
recipe 580695
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/graphics/">graphics</a>, <a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/image_processing/">image_processing</a>, <a href="/recipes/tags/imaging/">imaging</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/mathematics/">mathematics</a>, <a href="/recipes/tags/pil/">pil</a>).
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<p>Image projection onto sphere using Equirectangular map projection.</p>
<p>Download the test image from the Wikipedia page!</p>
2D Discrete Fourier Transform (Python)
2015-01-03T03:39:34-08:00FB36http://code.activestate.com/recipes/users/4172570/http://code.activestate.com/recipes/578997-2d-discrete-fourier-transform/
<p style="color: grey">
Python
recipe 578997
by <a href="/recipes/users/4172570/">FB36</a>
(<a href="/recipes/tags/image/">image</a>, <a href="/recipes/tags/images/">images</a>, <a href="/recipes/tags/image_processing/">image_processing</a>, <a href="/recipes/tags/math/">math</a>, <a href="/recipes/tags/mathematics/">mathematics</a>, <a href="/recipes/tags/signal_processing/">signal_processing</a>).
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<p>2D Discrete Fourier Transform (DFT) and its inverse.</p>
<p>Calculates 2D DFT of an image and recreates the image using inverse 2D DFT.</p>
<p>Computation is slow so only suitable for thumbnail size images.</p>