{ "cells": [ { "cell_type": "markdown", "metadata": { "id": "view-in-github", "colab_type": "text" }, "source": [ "\"Open" ] }, { "cell_type": "markdown", "metadata": { "id": "6kohkHmDspFv" }, "source": [ "Goal: Build a DCGAN to generate pictures of dogs." ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "H6-2T1sZaMbT" }, "outputs": [], "source": [ "from torch import nn\n", "from torch.utils.data import DataLoader\n", "\n", "import torchvision\n" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "Uw6HT4aiXASR" }, "outputs": [], "source": [ "# dataset builders\n", "import zipfile\n", "from torch.utils.data import Dataset" ] }, { "cell_type": "code", "source": [ "import os" ], "metadata": { "id": "LReZU0GjcWbs" }, "execution_count": 7, "outputs": [] }, { "cell_type": "markdown", "metadata": { "id": "PxA7ZSjeVfks" }, "source": [ "# Build Dataset" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/" }, "id": "-jZgZHozVdnb", "outputId": "217cefa9-8b71-4d38-c979-bbe43bae9eb7" }, "outputs": [ { "name": "stdout", "output_type": "stream", "text": [ "--2023-12-31 14:53:33-- https://cg.cs.tsinghua.edu.cn/ThuDogs/low-annotations.zip\n", "Resolving cg.cs.tsinghua.edu.cn (cg.cs.tsinghua.edu.cn)... 101.6.6.219, 2402:f000:1:416:101:6:6:219\n", "Connecting to cg.cs.tsinghua.edu.cn (cg.cs.tsinghua.edu.cn)|101.6.6.219|:443... connected.\n", "HTTP request sent, awaiting response... 200 OK\n", "Length: 37326330 (36M) [application/zip]\n", "Saving to: ‘/content/dl_test/low-annotations.zip’\n", "\n", "low-annotations.zip 100%[===================>] 35.60M 10.8MB/s in 4.0s \n", "\n", "2023-12-31 14:53:39 (8.96 MB/s) - ‘/content/dl_test/low-annotations.zip’ saved [37326330/37326330]\n", "\n" ] } ], "source": [ "!wget -P /content/dl_test/ 'https://cg.cs.tsinghua.edu.cn/ThuDogs/low-annotations.zip'" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "heTKBBPpVdak" }, "outputs": [], "source": [ "with zipfile.ZipFile(\"/content/dl_test/low-annotations.zip\",\"r\") as zip_ref:\n", " zip_ref.extractall(\"/content/dl_test/\")\n" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/" }, "id": "8yWOCRc-X92Q", "outputId": "6eb66fdb-83cb-4fce-873a-d538f2dbc031" }, "outputs": [ { "output_type": "stream", "name": "stdout", "text": [ "--2023-12-31 15:02:35-- https://cloud.tsinghua.edu.cn/seafhttp/files/817eeb66-a140-4903-a869-c59e12fb72c4/low-resolution.zip\n", "Resolving cloud.tsinghua.edu.cn (cloud.tsinghua.edu.cn)... 166.111.6.101, 2402:f000:1:406:166:111:6:101\n", "Connecting to cloud.tsinghua.edu.cn (cloud.tsinghua.edu.cn)|166.111.6.101|:443... connected.\n", "HTTP request sent, awaiting response... 200 OK\n", "Length: 2664983287 (2.5G) [application/zip]\n", "Saving to: ‘/content/imgs/low-resolution.zip’\n", "\n", "low-resolution.zip 100%[===================>] 2.48G 12.3MB/s in 3m 27s \n", "\n", "2023-12-31 15:06:03 (12.3 MB/s) - ‘/content/imgs/low-resolution.zip’ saved [2664983287/2664983287]\n", "\n" ] } ], "source": [ "!wget -P /content/imgs/ 'https://cloud.tsinghua.edu.cn/seafhttp/files/817eeb66-a140-4903-a869-c59e12fb72c4/low-resolution.zip'" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "rfgNjl7IX9zo" }, "outputs": [], "source": [ "with zipfile.ZipFile('/content/imgs/low-resolution.zip','r') as zip_ref:\n", " zip_ref.extractall('/content/imgs/')" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "yeZuwR2mX9w0" }, "outputs": [], "source": [ "img_files=[x[2] for x in os.walk('/content/imgs/low-resolution/')]\n", "_=[]\n", "for val in img_files:\n", " _+=val\n", "img_files=_" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "5EyC3pO_X9mS" }, "outputs": [], "source": [] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "fLQXOcNDX9hm" }, "outputs": [], "source": [] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "pUGc3M1ck11b" }, "outputs": [], "source": [ "class Discriminator(nn.Module):\n", " def __init__(self):\n", " super().__init__()\n", " self.name='Discriminator'\n", "\n", " self.out=32\n", "\n", " self.model=nn.Sequential(\n", " nn.Conv2d(\n", " in_channels=3,\n", " out_channels=self.out,\n", " kernel_size=4,\n", " stride=2,\n", " padding=1), #16x16\n", " nn.LeakyReLU(0.2),\n", "\n", " self._convlayer(self.out,2*self.out), #8x8\n", " self._convlayer(2*self.out,4*self.out), #4x4\n", " self._convlayer(4*self.out,8*self.out), #2x2\n", "\n", " nn.Conv2d(8*self.out,1,kernel_size=4,stride=2,padding=0),\n", " nn.Sigmoid()\n", " )\n", "\n", " def _convlayer(self,in_channels,out_channels):\n", " return nn.Sequential(\n", " nn.Conv2d(\n", " in_channels=in_channels,\n", " out_channels=out_channels,\n", " kernel_size=4,\n", " stride=2,\n", " padding=1\n", " ),\n", " nn.BatchNorm2d(num_features=out_channels),\n", " nn.LeakyReLU(0.2)\n", " )\n", "\n", "\n", " def forward(self,x):\n", " return self.model(x)" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/", "height": 143 }, "id": "qNMOAf72UWIs", "outputId": "407ec583-ccf8-40a1-c4a7-b59e960cd6f7" }, "outputs": [ { "ename": "SyntaxError", "evalue": "ignored", "output_type": "error", "traceback": [ "\u001b[0;36m File \u001b[0;32m\"\"\u001b[0;36m, line \u001b[0;32m2\u001b[0m\n\u001b[0;31m def __init(self)__:\u001b[0m\n\u001b[0m ^\u001b[0m\n\u001b[0;31mSyntaxError\u001b[0m\u001b[0;31m:\u001b[0m expected ':'\n" ] } ], "source": [ "_class Discriminator_alt_1(nn.Module):\n", " def __init(self)__:\n", " super().__init__()\n", "\n", " self.model=nn.Sequential(\n", " nn.Conv2d(),\n", " nn.MaxPool2d(),\n", " nn.LeakyReLU(),\n", "\n", " nn.Conv2d(),\n", " nn.MaxPool2d(),\n", " nn.LeakyReLU(),\n", "\n", " nn.Conv2d(),\n", " nn.MaxPool2d(),\n", " nn.LeakyReLU(),\n", "\n", " # one fully connected layer\n", "\n", " )" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "OzD9TfkSwjFj" }, "outputs": [], "source": [ "model=Discriminator()" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/", "height": 346 }, "id": "8RdrWl9XxGxz", "outputId": "fbd8d6ba-2fc9-4779-997d-199c7144f533" }, "outputs": [ { "ename": "RuntimeError", "evalue": "ignored", "output_type": "error", "traceback": [ "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m", "\u001b[0;31mRuntimeError\u001b[0m Traceback (most recent call last)", "\u001b[0;32m\u001b[0m in \u001b[0;36m\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mmodel\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mforward\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0ma\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m", "\u001b[0;32m\u001b[0m in \u001b[0;36mforward\u001b[0;34m(self, x)\u001b[0m\n\u001b[1;32m 38\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 39\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0mforward\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 40\u001b[0;31m \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mmodel\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mx\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m", "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/torch/nn/modules/module.py\u001b[0m in \u001b[0;36m_wrapped_call_impl\u001b[0;34m(self, *args, **kwargs)\u001b[0m\n\u001b[1;32m 1516\u001b[0m \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_compiled_call_impl\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m 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"source": [ "model.forward(a)" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/", "height": 328 }, "id": "oloFE_zfxgEf", "outputId": "21476023-74ef-4403-e04f-b5a5f1523d34" }, "outputs": [ { "ename": "ValueError", "evalue": "ignored", "output_type": "error", "traceback": [ "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m", "\u001b[0;31mValueError\u001b[0m Traceback (most recent call last)", "\u001b[0;32m\u001b[0m in \u001b[0;36m\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mmodel\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mforward\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0ma\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mtype\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mtorch\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfloat32\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m", "\u001b[0;32m\u001b[0m in 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\u001b[0mTensor\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 138\u001b[0;31m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_check_input_dim\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0minput\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 139\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 140\u001b[0m \u001b[0;31m# exponential_average_factor is set to self.momentum\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n", "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/torch/nn/modules/batchnorm.py\u001b[0m in \u001b[0;36m_check_input_dim\u001b[0;34m(self, input)\u001b[0m\n\u001b[1;32m 414\u001b[0m \u001b[0;32mdef\u001b[0m \u001b[0m_check_input_dim\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0minput\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 415\u001b[0m \u001b[0;32mif\u001b[0m \u001b[0minput\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mdim\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;34m!=\u001b[0m \u001b[0;36m4\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 416\u001b[0;31m \u001b[0;32mraise\u001b[0m \u001b[0mValueError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34mf\"expected 4D input (got {input.dim()}D input)\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m 417\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m 418\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n", "\u001b[0;31mValueError\u001b[0m: expected 4D input (got 3D input)" ] } ], "source": [ "model.forward(a.type(torch.float32))" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/" }, "id": "R613eMTUx_dC", "outputId": "8007ba61-02b6-4bf6-f0c7-0e55dd94dd51" }, "outputs": [ { "data": { "text/plain": [ "tensor([[[253., 253., 253., ..., 246., 255., 254.],\n", " [253., 253., 253., ..., 248., 255., 254.],\n", " [253., 253., 253., ..., 250., 255., 255.],\n", " ...,\n", " [140., 115., 146., ..., 122., 123., 122.],\n", " [130., 138., 166., ..., 118., 120., 118.],\n", " [168., 204., 245., ..., 118., 120., 120.]],\n", "\n", " [[231., 231., 231., ..., 228., 237., 238.],\n", " [231., 231., 231., ..., 230., 237., 238.],\n", " [231., 231., 231., ..., 232., 238., 239.],\n", " ...,\n", " [ 74., 49., 78., ..., 55., 56., 56.],\n", " [ 62., 70., 98., ..., 49., 50., 51.],\n", " [100., 136., 177., ..., 49., 50., 50.]],\n", "\n", " [[194., 194., 194., ..., 216., 223., 222.],\n", " [194., 194., 194., ..., 218., 223., 222.],\n", " [194., 194., 194., ..., 220., 224., 223.],\n", " ...,\n", " [ 26., 1., 33., ..., 28., 30., 30.],\n", " [ 15., 23., 53., ..., 20., 24., 24.],\n", " [ 53., 89., 132., ..., 20., 24., 24.]]])" ] }, "execution_count": 59, "metadata": {}, "output_type": "execute_result" } ], "source": [ "a.type(torch.float32)" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "9rSFk1h5yRga" }, "outputs": [], "source": [ "import torch" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/" }, "id": "pXy7--eeyhlb", "outputId": "4a0fafd5-54ff-4cd9-e1ed-ec8c59a8f2ac" }, "outputs": [ { "data": { "text/plain": [ "torch.Size([1, 3, 218, 178])" ] }, "execution_count": 68, "metadata": {}, "output_type": "execute_result" } ], "source": [ "a.unsqueeze(0).size()" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "colab": { "base_uri": "https://localhost:8080/" }, "id": "Hcp8TZsXyt1f", "outputId": "dbcb7b77-1d80-4e17-d883-c84b488b1b2c" }, "outputs": [ { "data": { "text/plain": [ "torch.Size([1, 1, 5, 4])" ] }, "execution_count": 73, "metadata": {}, "output_type": "execute_result" } ], "source": [ "model.forward(a.type(torch.float32).unsqueeze(0)).size()" ] }, { "cell_type": "code", "execution_count": null, "metadata": { "id": "1jP9QMOBzkl9" }, "outputs": [], "source": [] } ], "metadata": { "colab": { "provenance": [], "authorship_tag": "ABX9TyM68Wa11h0QOa9RlsFem/Q/", "include_colab_link": true }, "kernelspec": { "display_name": "Python 3", "name": "python3" }, "language_info": { "name": "python" } }, "nbformat": 4, "nbformat_minor": 0 }