From 5f92f14ee628a9231ad4070d98a429ecf12ea6df Mon Sep 17 00:00:00 2001
From: Jean-Luc Parouty <Jean-Luc.Parouty@simap.grenoble-inp.fr>
Date: Wed, 2 Feb 2022 17:50:04 +0100
Subject: [PATCH] Update scratchbook with upsampling example
---
Misc/Scratchbook.ipynb | 63 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 62 insertions(+), 1 deletion(-)
diff --git a/Misc/Scratchbook.ipynb b/Misc/Scratchbook.ipynb
index f39fc5b..765b64e 100644
--- a/Misc/Scratchbook.ipynb
+++ b/Misc/Scratchbook.ipynb
@@ -233,10 +233,71 @@
" print(f'#{i} : {x} => {y}')"
]
},
+ {
+ "cell_type": "markdown",
+ "id": "67e3c888-aaa4-4166-90a1-cdb63920fd7d",
+ "metadata": {},
+ "source": [
+ "## 3 - Upsampling"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 42,
+ "id": "20f12cf0-1fdb-4b53-92c6-d03b140e42d1",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "\n",
+ "Initial : (2, 2)\n",
+ "[[1 2]\n",
+ " [3 4]]\n",
+ "\n",
+ "Reshape as a batch of (2,2) vectors : (1, 2, 2, 1)\n",
+ "[[[[1]\n",
+ " [2]]\n",
+ "\n",
+ " [[3]\n",
+ " [4]]]]\n",
+ "\n",
+ "y shape : (1, 4, 4, 1)\n",
+ "\n",
+ " After a (4,4) reshape :\n",
+ "[[1 1 2 2]\n",
+ " [1 1 2 2]\n",
+ " [3 3 4 4]\n",
+ " [3 3 4 4]]\n"
+ ]
+ }
+ ],
+ "source": [
+ "x = np.array([1,2,3,4])\n",
+ "x = x.reshape(2,2)\n",
+ "print('\\nInitial : ', x.shape)\n",
+ "print(x)\n",
+ "\n",
+ "x = x.reshape((1,2,2,1))\n",
+ "print('\\nReshape as a batch of (2,2) vectors : ', x.shape)\n",
+ "print(x)\n",
+ "\n",
+ "y = tf.keras.layers.UpSampling2D( size=(2, 2), interpolation=\"nearest\" )(x)\n",
+ "\n",
+ "y = np.array(y)\n",
+ "print('\\ny shape : ',y.shape)\n",
+ "\n",
+ "y = y.reshape(4,4)\n",
+ "print('\\n After a (4,4) reshape :')\n",
+ "print(y)\n",
+ "\n"
+ ]
+ },
{
"cell_type": "code",
"execution_count": null,
- "id": "4d94892b-d3a5-448d-aa2b-28c3a01a4b72",
+ "id": "09ac4e52-8953-41d9-b712-e6a83a9ae860",
"metadata": {},
"outputs": [],
"source": []
--
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