From a303cc6b483d3cd958c399621e22e40574bcbbc8 Mon Sep 17 00:00:00 2001 From: Rémi Flamary Date: Tue, 21 Apr 2020 17:48:37 +0200 Subject: [MRG] Actually run sphinx-gallery (#146) * generate gallery * remove mock * add sklearn to requirermnt?txt for example * remove latex from fgw example * add networks for graph example * remove all * add requirement.txt rtd * rtd debug * update readme * eradthedoc with redirection * add conf rtd --- .../auto_examples/plot_otda_color_images.rst | 291 --------------------- 1 file changed, 291 deletions(-) delete mode 100644 docs/source/auto_examples/plot_otda_color_images.rst (limited to 'docs/source/auto_examples/plot_otda_color_images.rst') diff --git a/docs/source/auto_examples/plot_otda_color_images.rst b/docs/source/auto_examples/plot_otda_color_images.rst deleted file mode 100644 index a5b0d53..0000000 --- a/docs/source/auto_examples/plot_otda_color_images.rst +++ /dev/null @@ -1,291 +0,0 @@ -.. only:: html - - .. note:: - :class: sphx-glr-download-link-note - - Click :ref:`here ` to download the full example code - .. rst-class:: sphx-glr-example-title - - .. _sphx_glr_auto_examples_plot_otda_color_images.py: - - -============================= -OT for image color adaptation -============================= - -This example presents a way of transferring colors between two images -with Optimal Transport as introduced in [6] - -[6] Ferradans, S., Papadakis, N., Peyre, G., & Aujol, J. F. (2014). -Regularized discrete optimal transport. -SIAM Journal on Imaging Sciences, 7(3), 1853-1882. - - -.. code-block:: default - - - # Authors: Remi Flamary - # Stanislas Chambon - # - # License: MIT License - - import numpy as np - import matplotlib.pylab as pl - import ot - - - r = np.random.RandomState(42) - - - def im2mat(I): - """Converts an image to matrix (one pixel per line)""" - return I.reshape((I.shape[0] * I.shape[1], I.shape[2])) - - - def mat2im(X, shape): - """Converts back a matrix to an image""" - return X.reshape(shape) - - - def minmax(I): - return np.clip(I, 0, 1) - - - - - - - - - -Generate data -------------- - - -.. code-block:: default - - - # Loading images - I1 = pl.imread('../data/ocean_day.jpg').astype(np.float64) / 256 - I2 = pl.imread('../data/ocean_sunset.jpg').astype(np.float64) / 256 - - X1 = im2mat(I1) - X2 = im2mat(I2) - - # training samples - nb = 1000 - idx1 = r.randint(X1.shape[0], size=(nb,)) - idx2 = r.randint(X2.shape[0], size=(nb,)) - - Xs = X1[idx1, :] - Xt = X2[idx2, :] - - - - - - - - - -Plot original image -------------------- - - -.. code-block:: default - - - pl.figure(1, figsize=(6.4, 3)) - - pl.subplot(1, 2, 1) - pl.imshow(I1) - pl.axis('off') - pl.title('Image 1') - - pl.subplot(1, 2, 2) - pl.imshow(I2) - pl.axis('off') - pl.title('Image 2') - - - - - -.. image:: /auto_examples/images/sphx_glr_plot_otda_color_images_001.png - :class: sphx-glr-single-img - - -.. rst-class:: sphx-glr-script-out - - Out: - - .. code-block:: none - - - Text(0.5, 1.0, 'Image 2') - - - -Scatter plot of colors ----------------------- - - -.. code-block:: default - - - pl.figure(2, figsize=(6.4, 3)) - - pl.subplot(1, 2, 1) - pl.scatter(Xs[:, 0], Xs[:, 2], c=Xs) - pl.axis([0, 1, 0, 1]) - pl.xlabel('Red') - pl.ylabel('Blue') - pl.title('Image 1') - - pl.subplot(1, 2, 2) - pl.scatter(Xt[:, 0], Xt[:, 2], c=Xt) - pl.axis([0, 1, 0, 1]) - pl.xlabel('Red') - pl.ylabel('Blue') - pl.title('Image 2') - pl.tight_layout() - - - - - -.. image:: /auto_examples/images/sphx_glr_plot_otda_color_images_002.png - :class: sphx-glr-single-img - - - - - -Instantiate the different transport algorithms and fit them ------------------------------------------------------------ - - -.. code-block:: default - - - # EMDTransport - ot_emd = ot.da.EMDTransport() - ot_emd.fit(Xs=Xs, Xt=Xt) - - # SinkhornTransport - ot_sinkhorn = ot.da.SinkhornTransport(reg_e=1e-1) - ot_sinkhorn.fit(Xs=Xs, Xt=Xt) - - # prediction between images (using out of sample prediction as in [6]) - transp_Xs_emd = ot_emd.transform(Xs=X1) - transp_Xt_emd = ot_emd.inverse_transform(Xt=X2) - - transp_Xs_sinkhorn = ot_sinkhorn.transform(Xs=X1) - transp_Xt_sinkhorn = ot_sinkhorn.inverse_transform(Xt=X2) - - I1t = minmax(mat2im(transp_Xs_emd, I1.shape)) - I2t = minmax(mat2im(transp_Xt_emd, I2.shape)) - - I1te = minmax(mat2im(transp_Xs_sinkhorn, I1.shape)) - I2te = minmax(mat2im(transp_Xt_sinkhorn, I2.shape)) - - - - - - - - - -Plot new images ---------------- - - -.. code-block:: default - - - pl.figure(3, figsize=(8, 4)) - - pl.subplot(2, 3, 1) - pl.imshow(I1) - pl.axis('off') - pl.title('Image 1') - - pl.subplot(2, 3, 2) - pl.imshow(I1t) - pl.axis('off') - pl.title('Image 1 Adapt') - - pl.subplot(2, 3, 3) - pl.imshow(I1te) - pl.axis('off') - pl.title('Image 1 Adapt (reg)') - - pl.subplot(2, 3, 4) - pl.imshow(I2) - pl.axis('off') - pl.title('Image 2') - - pl.subplot(2, 3, 5) - pl.imshow(I2t) - pl.axis('off') - pl.title('Image 2 Adapt') - - pl.subplot(2, 3, 6) - pl.imshow(I2te) - pl.axis('off') - pl.title('Image 2 Adapt (reg)') - pl.tight_layout() - - pl.show() - - - -.. image:: /auto_examples/images/sphx_glr_plot_otda_color_images_003.png - :class: sphx-glr-single-img - - -.. rst-class:: sphx-glr-script-out - - Out: - - .. code-block:: none - - /home/rflamary/PYTHON/POT/examples/plot_otda_color_images.py:164: UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure. - pl.show() - - - - - -.. rst-class:: sphx-glr-timing - - **Total running time of the script:** ( 2 minutes 28.821 seconds) - - -.. _sphx_glr_download_auto_examples_plot_otda_color_images.py: - - -.. only :: html - - .. container:: sphx-glr-footer - :class: sphx-glr-footer-example - - - - .. container:: sphx-glr-download sphx-glr-download-python - - :download:`Download Python source code: plot_otda_color_images.py ` - - - - .. container:: sphx-glr-download sphx-glr-download-jupyter - - :download:`Download Jupyter notebook: plot_otda_color_images.ipynb ` - - -.. only:: html - - .. rst-class:: sphx-glr-signature - - `Gallery generated by Sphinx-Gallery `_ -- cgit v1.2.3