diff --git a/colorization/Image_Colorization.ipynb b/colorization/Image_Colorization.ipynb
new file mode 100644
index 0000000000000000000000000000000000000000..d77afdf9c8d04960e2b64e09cfb24086bf2e0f8b
--- /dev/null
+++ b/colorization/Image_Colorization.ipynb
@@ -0,0 +1,1400 @@
+{
+ "cells": [
+ {
+ "cell_type": "markdown",
+ "id": "reverse-polish",
+ "metadata": {
+ "id": "sustained-legend"
+ },
+ "source": [
+ "# Demonstration zu Bildkolorisierung mit neuronalen Netzwerken\n",
+ "## 1 Colorization von Richard Zhang: Zwei Modelle\n",
+ "Projektseite: https://github.com/richzhang/colorization/ Dort werden zwei Modelle zur automatischen Kolorisierung von Schwarzweiß-Bildern zur Verfügung gestellt. Das erste (\"ECCV16\") liefert mäßige Ergebnisse, das zweite (\"SIGGRAPH17\") liefert recht gute Ergebnisse."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "id": "descending-performance",
+ "metadata": {
+ "colab": {
+ "base_uri": "https://localhost:8080/"
+ },
+ "executionInfo": {
+ "elapsed": 21485,
+ "status": "ok",
+ "timestamp": 1617202158637,
+ "user": {
+ "displayName": "Simon Mayer",
+ "photoUrl": "",
+ "userId": "18295252399297823544"
+ },
+ "user_tz": -120
+ },
+ "id": "amber-tribe",
+ "outputId": "da16f1ce-6985-49c9-8bdc-f67541201769"
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Done!\n"
+ ]
+ },
+ {
+ "name": "stderr",
+ "output_type": "stream",
+ "text": [
+ "C:\\Users\\simon\\PycharmProjects\\colorization\\venv\\lib\\site-packages\\skimage\\color\\colorconv.py:1109: UserWarning: Color data out of range: Z < 0 in 3274 pixels\n",
+ " return xyz2rgb(lab2xyz(lab, illuminant, observer))\n"
+ ]
+ }
+ ],
+ "source": [
+ "# Kolorisierung mit ECCV16 Modell und vortrainierten Gewichten\n",
+ "!python demo_release.py -i imgs/AK050_506.jpg -o imgs_out/AK050_506_eccv -l True"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "nutritional-tribune",
+ "metadata": {
+ "id": "chronic-custody"
+ },
+ "source": [
+ "Zur Darstellung der Bilder definieren wir uns eine Funktion:"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "id": "detected-effectiveness",
+ "metadata": {
+ "colab": {
+ "base_uri": "https://localhost:8080/",
+ "height": 625,
+ "resources": {
+ "http://localhost:8080/imgs_out/AK050_506_eccv_bw.jpg": {
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+ ],
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+ "status_text": "Not Found"
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+ "http://localhost:8080/imgs_out/AK050_506_eccv_col.jpg": {
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+ "content-length",
+ "1449"
+ ],
+ [
+ "content-type",
+ "text/html; charset=utf-8"
+ ]
+ ],
+ "ok": false,
+ "status": 404,
+ "status_text": "Not Found"
+ }
+ }
+ },
+ "executionInfo": {
+ "elapsed": 846,
+ "status": "ok",
+ "timestamp": 1617202163647,
+ "user": {
+ "displayName": "Simon Mayer",
+ "photoUrl": "",
+ "userId": "18295252399297823544"
+ },
+ "user_tz": -120
+ },
+ "id": "waiting-reconstruction",
+ "outputId": "30cb3849-d604-4ba6-c346-e5a8b2106a3e"
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/html": [
+ "
"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ }
+ ],
+ "source": [
+ "from IPython.display import display, HTML\n",
+ "\n",
+ "def show_images(filenames, width, margin):\n",
+ " lis = [f'
' for name in filenames]\n",
+ " html = ''.join(lis)\n",
+ " display(HTML(html))\n",
+ "\n",
+ "eccv_names = ['imgs_out/AK050_506_eccv_bw.jpg', 'imgs_out/AK050_506_eccv_col.jpg']\n",
+ "show_images(eccv_names, 600, 2)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 4,
+ "id": "recovered-excellence",
+ "metadata": {
+ "colab": {
+ "base_uri": "https://localhost:8080/",
+ "height": 643,
+ "resources": {
+ "http://localhost:8080/imgs_out/AK050_506_bw.jpg": {
+ "data": "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",
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+ "content-length",
+ "1449"
+ ],
+ [
+ "content-type",
+ "text/html; charset=utf-8"
+ ]
+ ],
+ "ok": false,
+ "status": 404,
+ "status_text": "Not Found"
+ },
+ "http://localhost:8080/imgs_out/AK050_506_col.jpg": {
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+ "headers": [
+ [
+ "content-length",
+ "1449"
+ ],
+ [
+ "content-type",
+ "text/html; charset=utf-8"
+ ]
+ ],
+ "ok": false,
+ "status": 404,
+ "status_text": "Not Found"
+ }
+ }
+ },
+ "executionInfo": {
+ "elapsed": 12770,
+ "status": "ok",
+ "timestamp": 1617202220179,
+ "user": {
+ "displayName": "Simon Mayer",
+ "photoUrl": "",
+ "userId": "18295252399297823544"
+ },
+ "user_tz": -120
+ },
+ "id": "dated-vaccine",
+ "outputId": "16d41501-2539-4802-ccd6-94e1921f9e14"
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Done!\n"
+ ]
+ },
+ {
+ "data": {
+ "text/html": [
+ "
"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ }
+ ],
+ "source": [
+ "# Kolorisierung mit SIGGRAPH17 Modell und vortrainierten Gewichten\n",
+ "!python demo_release.py -i imgs/AK050_506.jpg -o imgs_out/AK050_506\n",
+ "siggraph_names = ['imgs_out/AK050_506_bw.jpg', 'imgs_out/AK050_506_col.jpg']\n",
+ "show_images(siggraph_names, 600, 2)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "voluntary-basis",
+ "metadata": {
+ "id": "nuclear-wyoming"
+ },
+ "source": [
+ "## 2 Training des SIGGRAPH17 Modells mit unseren Daten\n",
+ "\n",
+ "Wir möchten nun das SIGGRAPH17 Modell mit den Farbpostkarten aus dem Bestand der ÖNB Labs weitertrainieren. Dazu verwenden wir das Konzept des Transfer-Lernens (siehe https://pytorch.org/tutorials/beginner/transfer_learning_tutorial.html für ein Tutorial), bei dem ein (allgemein) trainiertes Netzwerk für eine speziellere Aufgabe (mit einer kleinen Menge an speziellen Daten und geringer Lernrate) weitertrainiert wird.\n",
+ "\n",
+ "### Die Netzwerkarchitektur des SIGGRAPH17 Modells\n",
+ "\n",
+ "Das Netzwerk auf dem wir aufbauen möchten wird im Paper \"[Real-Time User-Guided Image Colorization with Learned Deep Priors](https://richzhang.github.io/InteractiveColorization/)\" von Richard Zhang et al. beschrieben. Es besteht aus 10 Faltungsschichten (convolutional layers), siehe die blau eingefärbten Bereiche in der Abbildung:\n",
+ "
\n",
+ "\n",
+ "Die Eingabe ist der L-Kanal (Graustufen) des auf 256x256 Pixel reskalierten Bilds, die Ausgabe ist der ab-Kanal (Farbinformation), siehe [CIELAB color space](https://en.wikipedia.org/wiki/CIELAB_color_space) für weitere Informationen zum Lab-Farbraum.\n",
+ "\n",
+ "### Unsere Trainingsdaten\n",
+ "\n",
+ "Wir verwenden die als farbig markierten Postkarten aus dem Datenset der [historischen Postkarten der ÖNB Labs](https://labs.onb.ac.at/de/dataset/akon/). Das sind 7667 Bilder, welche wir auf 256x256 Pixel reskalieren. Ein kurzer Blick auf die ersten 40 Bilder:"
+ ]
+ },
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+ "data": "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",
+ "headers": [
+ [
+ "content-length",
+ "1449"
+ ],
+ [
+ "content-type",
+ "text/html; charset=utf-8"
+ ]
+ ],
+ "ok": false,
+ "status": 404,
+ "status_text": "Not Found"
+ }
+ }
+ },
+ "executionInfo": {
+ "elapsed": 1094,
+ "status": "ok",
+ "timestamp": 1617202235103,
+ "user": {
+ "displayName": "Simon Mayer",
+ "photoUrl": "",
+ "userId": "18295252399297823544"
+ },
+ "user_tz": -120
+ },
+ "id": "according-rebate",
+ "outputId": "f9d0bbdd-ef10-413d-cf14-11561066963d"
+ },
+ "outputs": [
+ {
+ "data": {
+ "text/html": [
+ "






































"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ }
+ ],
+ "source": [
+ "import glob\n",
+ "img_names = glob.glob(\"models/colored_postcards/low_res_imgs/*.jpg\")\n",
+ "show_images(img_names[:40], 120, 2)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "facial-indianapolis",
+ "metadata": {
+ "id": "cooperative-export"
+ },
+ "source": [
+ "Der folgende Code läd die Bilder als ein von torch lesbares Datenset ein und unterteilt diese in zwei Teile. 70% der Bilder werden zum Training, 30% zur Validierung verwendet, ein batch besteht aus 10 Bildern."
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 1,
+ "id": "forbidden-hawaiian",
+ "metadata": {
+ "colab": {
+ "base_uri": "https://localhost:8080/"
+ },
+ "executionInfo": {
+ "elapsed": 3454,
+ "status": "ok",
+ "timestamp": 1617202248238,
+ "user": {
+ "displayName": "Simon Mayer",
+ "photoUrl": "",
+ "userId": "18295252399297823544"
+ },
+ "user_tz": -120
+ },
+ "id": "injured-operator",
+ "outputId": "f5b0621f-070d-421b-d15d-59d2749eb907"
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "{'train': 1074, 'val': 460}\n"
+ ]
+ }
+ ],
+ "source": [
+ "from torch.utils.data import random_split\n",
+ "from torch.utils.data import DataLoader\n",
+ "from models import ColDataset\n",
+ "\n",
+ "postcard_dataset = ColDataset(csv_file='models/colored_postcards/akon_postcards_public_domain.csv',\n",
+ " root_dir='models/colored_postcards/low_res_imgs')\n",
+ "(train_set, val_set) = random_split(postcard_dataset, [round(0.7*len(postcard_dataset)), \n",
+ " round(0.3*len(postcard_dataset))])\n",
+ "train_loader = DataLoader(train_set, shuffle=True, batch_size=5)\n",
+ "val_loader = DataLoader(val_set, batch_size=5)\n",
+ "dataloaders = {'train': train_loader, 'val': val_loader}\n",
+ "dataset_sizes = {'train': len(train_loader), 'val': len(val_loader)}\n",
+ "print(dataset_sizes)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "hawaiian-colonial",
+ "metadata": {
+ "id": "meaningful-jason"
+ },
+ "source": [
+ "### Training\n",
+ "Friere alle Schichten bis auf die 10. ein, d.h. setze requires_grad = False, definiere eine Trainingsfunktion und trainiere das Modell (lange Laufzeit und GPU benötigt!)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 2,
+ "id": "rapid-black",
+ "metadata": {
+ "colab": {
+ "base_uri": "https://localhost:8080/",
+ "height": 643
+ },
+ "executionInfo": {
+ "elapsed": 280888,
+ "status": "error",
+ "timestamp": 1617202697577,
+ "user": {
+ "displayName": "Simon Mayer",
+ "photoUrl": "",
+ "userId": "18295252399297823544"
+ },
+ "user_tz": -120
+ },
+ "id": "compressed-stream",
+ "outputId": "d4b5fb24-d3fe-4d89-8c20-b1797ec284b9"
+ },
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Using this device: cuda:0\n",
+ "Parameters to train:\n",
+ "model10up.0.weight\n",
+ "model10up.0.bias\n",
+ "model10.1.weight\n",
+ "model10.1.bias\n",
+ "model1short10.0.weight\n",
+ "model1short10.0.bias\n",
+ "model_class.0.weight\n",
+ "model_class.0.bias\n",
+ "model_out.0.weight\n",
+ "model_out.0.bias\n",
+ "Epoch 0/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 18624.812890410423train Loss: 3.4683\n",
+ "Id 459, Running loss: 7383.762612938881val Loss: 3.2103\n",
+ "\n",
+ "Epoch 1/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 17937.49677014351train Loss: 3.3403\n",
+ "Id 459, Running loss: 8493.272267580032val Loss: 3.6927\n",
+ "\n",
+ "Epoch 2/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 17498.283675074577train Loss: 3.2585\n",
+ "Id 459, Running loss: 7135.0914496183395val Loss: 3.1022\n",
+ "\n",
+ "Epoch 3/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 17268.09665620327train Loss: 3.2157\n",
+ "Id 459, Running loss: 7338.359932899475val Loss: 3.1906\n",
+ "\n",
+ "Epoch 4/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 17208.68234539032train Loss: 3.2046\n",
+ "Id 459, Running loss: 7053.593060970306val Loss: 3.0668\n",
+ "\n",
+ "Epoch 5/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 17059.672951579094train Loss: 3.1768\n",
+ "Id 459, Running loss: 6958.570292592049val Loss: 3.0255\n",
+ "\n",
+ "Epoch 6/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16981.49807715416train Loss: 3.1623\n",
+ "Id 459, Running loss: 7297.812871932983val Loss: 3.1730\n",
+ "\n",
+ "Epoch 7/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16417.04276883602train Loss: 3.0572\n",
+ "Id 459, Running loss: 6786.53192281723val Loss: 2.9507\n",
+ "\n",
+ "Epoch 8/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16304.812635421753train Loss: 3.0363\n",
+ "Id 459, Running loss: 6764.423376917839val Loss: 2.9411\n",
+ "\n",
+ "Epoch 9/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16253.053290367126train Loss: 3.0266\n",
+ "Id 459, Running loss: 6776.619211435318val Loss: 2.9464\n",
+ "\n",
+ "Epoch 10/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16178.702568292618train Loss: 3.0128\n",
+ "Id 459, Running loss: 6743.529261350632val Loss: 2.9320\n",
+ "\n",
+ "Epoch 11/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16192.923047423363train Loss: 3.0154\n",
+ "Id 459, Running loss: 6695.195124745369val Loss: 2.9110\n",
+ "\n",
+ "Epoch 12/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16141.611277461052train Loss: 3.0059\n",
+ "Id 459, Running loss: 6762.963482141495val Loss: 2.9404\n",
+ "\n",
+ "Epoch 13/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 16107.0860196352train Loss: 2.9995\n",
+ "Id 459, Running loss: 6677.127980589867val Loss: 2.9031\n",
+ "\n",
+ "Epoch 14/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 15977.700641393661train Loss: 2.9754\n",
+ "Id 459, Running loss: 6653.89021396637val Loss: 2.8930\n",
+ "\n",
+ "Epoch 15/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 15931.155022501945train Loss: 2.9667\n",
+ "Id 459, Running loss: 6641.886808872223val Loss: 2.8878\n",
+ "\n",
+ "Epoch 16/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 15963.75470340252train Loss: 2.9728\n",
+ "Id 459, Running loss: 6667.6510190963745val Loss: 2.8990\n",
+ "\n",
+ "Epoch 17/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 15942.60212123394train Loss: 2.9688\n",
+ "Id 459, Running loss: 6622.804355621338val Loss: 2.8795\n",
+ "\n",
+ "Epoch 18/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 15925.79077219963train Loss: 2.9657\n",
+ "Id 459, Running loss: 6693.34864795208val Loss: 2.9102\n",
+ "\n",
+ "Epoch 19/19\n",
+ "----------\n",
+ "Id 1073, Running loss: 15914.486820459366train Loss: 2.9636\n",
+ "Id 459, Running loss: 6650.785673260689val Loss: 2.8916\n",
+ "\n",
+ "Training complete in 348m 15s\n",
+ "Best val Loss: 2.879480\n"
+ ]
+ }
+ ],
+ "source": [
+ "import copy\n",
+ "from models import siggraph17\n",
+ "import sys\n",
+ "import time\n",
+ "import torch\n",
+ "\n",
+ "device = torch.device(\"cuda:0\" if torch.cuda.is_available() else \"cpu\")\n",
+ "print('Using this device: ' + str(device))\n",
+ "colorizer = siggraph17().to(device)\n",
+ "print('Parameters to train:')\n",
+ "for i, (name, param) in enumerate(colorizer.named_parameters()):\n",
+ " if i < 66 or (70 <= i <= 73):\n",
+ " param.requires_grad = False\n",
+ " if param.requires_grad:\n",
+ " print(name)\n",
+ "\n",
+ "def train_model(model, criterion, optimizer, scheduler, num_epochs=20):\n",
+ " since = time.time()\n",
+ " best_model_wts = copy.deepcopy(model.state_dict())\n",
+ " best_loss = 100\n",
+ " for epoch in range(num_epochs):\n",
+ " print('Epoch {}/{}'.format(epoch, num_epochs - 1))\n",
+ " print('-' * 10)\n",
+ " # Each epoch has a training and validation phase\n",
+ " for phase in ['train', 'val']:\n",
+ " if phase == 'train':\n",
+ " model.train() # Set model to training mode\n",
+ " else:\n",
+ " model.eval() # Set model to evaluate mode\n",
+ " running_loss = 0.0\n",
+ " # Iterate over data.\n",
+ " for i, data in enumerate(dataloaders[phase]):\n",
+ " inputs = data['L'].to(device)\n",
+ " labels = data['ab'].to(device)\n",
+ " # zero the parameter gradients\n",
+ " optimizer.zero_grad()\n",
+ " # forward\n",
+ " # track history if only in train\n",
+ " with torch.set_grad_enabled(phase == 'train'):\n",
+ " outputs = model(inputs)\n",
+ " loss = criterion(outputs, labels)\n",
+ " # backward + optimize only if in training phase\n",
+ " if phase == 'train':\n",
+ " loss.backward()\n",
+ " optimizer.step()\n",
+ " # statistics\n",
+ " running_loss += loss.item() * inputs.size(0)\n",
+ " sys.stdout.write('\\r' 'Id ' + str(i) + ', Running loss: ' + str(running_loss))\n",
+ " if phase == 'train':\n",
+ " scheduler.step()\n",
+ " epoch_loss = running_loss / (5*dataset_sizes[phase])\n",
+ " print('{} Loss: {:.4f}'.format(\n",
+ " phase, epoch_loss))\n",
+ " # deep copy the model\n",
+ " if phase == 'val' and epoch_loss < best_loss:\n",
+ " best_loss = epoch_loss\n",
+ " best_model_wts = copy.deepcopy(model.state_dict())\n",
+ " print()\n",
+ " time_elapsed = time.time() - since\n",
+ " print('Training complete in {:.0f}m {:.0f}s'.format(\n",
+ " time_elapsed // 60, time_elapsed % 60))\n",
+ " print('Best val Loss: {:4f}'.format(best_loss))\n",
+ " # load best model weights\n",
+ " model.load_state_dict(best_model_wts)\n",
+ " return model\n",
+ "\n",
+ "\n",
+ "criterion = torch.nn.SmoothL1Loss()\n",
+ "optimizer = torch.optim.Adam(colorizer.parameters(), lr=0.001)\n",
+ "scheduler = torch.optim.lr_scheduler.StepLR(optimizer, step_size=7, gamma=0.1)\n",
+ "\n",
+ "colorizer = train_model(colorizer, criterion, optimizer, scheduler, 20)\n",
+ "PATH = './models/col_new.pth'\n",
+ "torch.save(colorizer.state_dict(), PATH)"
+ ]
+ },
+ {
+ "cell_type": "markdown",
+ "id": "differential-conspiracy",
+ "metadata": {},
+ "source": [
+ "### Testen des Modells"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": 3,
+ "id": "mental-viking",
+ "metadata": {},
+ "outputs": [
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Done!\n",
+ "Done!\n",
+ "Benötigte Zeit: 12.35 s\n"
+ ]
+ },
+ {
+ "data": {
+ "text/html": [
+ "


"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Done!\n",
+ "Done!\n",
+ "Benötigte Zeit: 8.32 s\n"
+ ]
+ },
+ {
+ "data": {
+ "text/html": [
+ "


"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Done!\n",
+ "Done!\n",
+ "Benötigte Zeit: 9.14 s\n"
+ ]
+ },
+ {
+ "data": {
+ "text/html": [
+ "


"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ },
+ {
+ "name": "stdout",
+ "output_type": "stream",
+ "text": [
+ "Done!\n",
+ "Done!\n",
+ "Benötigte Zeit: 9.03 s\n"
+ ]
+ },
+ {
+ "data": {
+ "text/html": [
+ "


"
+ ],
+ "text/plain": [
+ ""
+ ]
+ },
+ "metadata": {},
+ "output_type": "display_data"
+ }
+ ],
+ "source": [
+ "import time\n",
+ "since = time.time()\n",
+ "!python demo_release.py -i imgs/AK050_506.jpg -o imgs_out/AK050_506_new -m models/col_new.pth\n",
+ "!python demo_release.py -i imgs/AK050_506.jpg -o imgs_out/AK050_506\n",
+ "print('Benötigte Zeit: ' + str(round(time.time() - since, 2)) + ' s')\n",
+ "since = time.time()\n",
+ "new_names = ['imgs/AK050_506.jpg', 'imgs_out/AK050_506_new_bw.jpg', 'imgs_out/AK050_506_new_col.jpg', 'imgs_out/AK050_506_col.jpg']\n",
+ "show_images(new_names, 430, 2)\n",
+ "!python demo_release.py -i imgs/AK074_204.jpg -o imgs_out/AK074_204_new -m models/col_new.pth\n",
+ "!python demo_release.py -i imgs/AK074_204.jpg -o imgs_out/AK074_204\n",
+ "print('Benötigte Zeit: ' + str(round(time.time() - since, 2)) + ' s')\n",
+ "since = time.time()\n",
+ "new_names2 = ['imgs/AK074_204.jpg', 'imgs_out/AK074_204_new_bw.jpg', 'imgs_out/AK074_204_new_col.jpg', 'imgs_out/AK074_204_col.jpg']\n",
+ "show_images(new_names2, 430, 2)\n",
+ "!python demo_release.py -i imgs/AK111_139.jpg -o imgs_out/AK111_139_new -m models/col_new.pth\n",
+ "!python demo_release.py -i imgs/AK111_139.jpg -o imgs_out/AK111_139\n",
+ "print('Benötigte Zeit: ' + str(round(time.time() - since, 2)) + ' s')\n",
+ "since = time.time()\n",
+ "new_names3 = ['imgs/AK111_139.jpg', 'imgs_out/AK111_139_new_bw.jpg', 'imgs_out/AK111_139_new_col.jpg', 'imgs_out/AK111_139_col.jpg']\n",
+ "show_images(new_names3, 430, 2)\n",
+ "!python demo_release.py -i imgs/AK044_271.jpg -o imgs_out/AK044_271_new -m models/col_new.pth\n",
+ "!python demo_release.py -i imgs/AK044_271.jpg -o imgs_out/AK044_271\n",
+ "print('Benötigte Zeit: ' + str(round(time.time() - since, 2)) + ' s')\n",
+ "since = time.time()\n",
+ "new_names4 = ['imgs/AK044_271.jpg', 'imgs_out/AK044_271_new_bw.jpg', 'imgs_out/AK044_271_new_col.jpg', 'imgs_out/AK044_271_col.jpg']\n",
+ "show_images(new_names4, 430, 2)"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "execution_count": null,
+ "id": "chubby-transparency",
+ "metadata": {},
+ "outputs": [],
+ "source": []
+ }
+ ],
+ "metadata": {
+ "accelerator": "GPU",
+ "colab": {
+ "collapsed_sections": [],
+ "name": "Image_Colorization.ipynb",
+ "provenance": [],
+ "toc_visible": true
+ },
+ "kernelspec": {
+ "display_name": "Python 3",
+ "language": "python",
+ "name": "python3"
+ },
+ "language_info": {
+ "codemirror_mode": {
+ "name": "ipython",
+ "version": 3
+ },
+ "file_extension": ".py",
+ "mimetype": "text/x-python",
+ "name": "python",
+ "nbconvert_exporter": "python",
+ "pygments_lexer": "ipython3",
+ "version": "3.8.5"
+ }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 5
+}
diff --git a/colorization/demo_release.py b/colorization/demo_release.py
index bd4d12221f229fbda3a25cbe8efa6d388c94ed78..8506cbc0eb0ca731740251127803fd66f8eaec5f 100644
--- a/colorization/demo_release.py
+++ b/colorization/demo_release.py
@@ -1,64 +1,27 @@
-
import argparse
import matplotlib.pyplot as plt
-
from models import *
parser = argparse.ArgumentParser()
parser.add_argument('-i', '--img_path', type=str, default='imgs/AK044_271-271.jpg')
parser.add_argument('--use_gpu', action='store_true', help='whether to use GPU')
-parser.add_argument('-o', '--save_prefix', type=str, default='imgs_out/AK044_271-271', help='will save into this file with {eccv16.png, siggraph17.png} suffixes')
-parser.add_argument('-m', '--model', type=str, default='siggraph')
+parser.add_argument('-o', '--output', type=str, default='imgs_out/AK044_271-271')
+parser.add_argument('-m', '--model', type=str, default='models/siggraph17-df00044c.pth', help='path to siggraph17 model weights file')
+parser.add_argument('-l', '--legacy', type=bool, default=False, help='whether to use legacy ECCV model')
opt = parser.parse_args()
-use_siggraph = opt.model == 'siggraph'
# load colorizers
-if use_siggraph:
- colorizer_siggraph17 = siggraph17(pretrained=True, model_path='models/col_test3.pth').eval()
-if not use_siggraph:
- colorizer_eccv16 = eccv16(pretrained=True).eval()
-# if(opt.use_gpu):
-# colorizer_eccv16.cuda()
-# colorizer_siggraph17.cuda()
-
+if opt.legacy:
+ colorizer = eccv16(pretrained=True).eval()
+else:
+ colorizer = siggraph17(pretrained=True, model_path=opt.model).eval()
# default size to process images is 256x256
# grab L channel in both original ("orig") and resized ("rs") resolutions
img = load_img(opt.img_path)
-(tens_l_orig, tens_l_rs) = preprocess_img(img, HW=(256,256))
-# if(opt.use_gpu):
-# tens_l_rs = tens_l_rs.cuda()
-
-# colorizer outputs 256x256 ab map
-# resize and concatenate to original L channel
-img_bw = postprocess_tens(tens_l_orig, torch.cat((0*tens_l_orig,0*tens_l_orig),dim=1))
-if not use_siggraph:
- out_img_eccv16 = postprocess_tens(tens_l_orig, colorizer_eccv16(tens_l_rs).cpu())
-if use_siggraph:
- out_img_siggraph17 = postprocess_tens(tens_l_orig, colorizer_siggraph17(tens_l_rs).cpu())
-
-if not use_siggraph:
- plt.imsave('%s_eccv16.png'%opt.save_prefix, out_img_eccv16)
-if use_siggraph:
- plt.imsave('%s.jpg'%opt.save_prefix, out_img_siggraph17)
-
-# plt.figure(figsize=(12,8))
-# plt.subplot(2,2,1)
-# plt.imshow(img)
-# plt.title('Original')
-# plt.axis('off')
-#
-# plt.subplot(2,2,2)
-# plt.imshow(img_bw)
-# plt.title('Input')
-# plt.axis('off')
-#
-# plt.subplot(2,2,3)
-# plt.imshow(out_img_eccv16)
-# plt.title('Output (ECCV 16)')
-# plt.axis('off')
-#
-# plt.subplot(2,2,4)
-# plt.imshow(out_img_siggraph17)
-# plt.title('Output (SIGGRAPH 17)')
-# plt.axis('off')
-# plt.show()
+(tens_l_orig, tens_l_rs) = preprocess_img(img, HW=(256, 256))
+# colorizer outputs 256x256 ab map, resize and concatenate to original L channel
+img_bw = postprocess_tens(tens_l_orig, torch.cat((0*tens_l_orig, 0*tens_l_orig), dim=1))
+out_img = postprocess_tens(tens_l_orig, colorizer(tens_l_rs).cpu())
+plt.imsave(f'{opt.output}_col.jpg', out_img)
+plt.imsave(f'{opt.output}_bw.jpg', img_bw)
+print('Done!')
\ No newline at end of file
diff --git a/colorization/models/colored_postcards/download_color.py b/colorization/models/colored_postcards/download_color.py
index ba515abba1e6295efe76c16e1ea52d04b7b76ccb..7d833325e0a9b52cff88c2a93f2d7d520f3d83cd 100644
--- a/colorization/models/colored_postcards/download_color.py
+++ b/colorization/models/colored_postcards/download_color.py
@@ -3,6 +3,7 @@ import requests
import jsonpath_ng as jp
import pathlib
import re
+import sys
def get_raw_data(filepath='akon_postcards_public_domain.csv'):
diff --git a/colorization/models/eccv16.py b/colorization/models/eccv16.py
index 8d3b3601cb7e5cb83a0f4bb5f049b9fece46e1ba..15f2257ce379a61cfb5875206ca97c51c16ba12f 100644
--- a/colorization/models/eccv16.py
+++ b/colorization/models/eccv16.py
@@ -82,7 +82,7 @@ class ECCVGenerator(BaseColor):
self.softmax = nn.Softmax(dim=1)
self.model_out = nn.Conv2d(313, 2, kernel_size=1, padding=0, dilation=1, stride=1, bias=False)
- self.upsample4 = nn.Upsample(scale_factor=4, mode='bilinear')
+ self.upsample4 = nn.Upsample(scale_factor=4, mode='bilinear', align_corners=False)
def forward(self, input_l):
conv1_2 = self.model1(self.normalize_l(input_l))
@@ -98,9 +98,8 @@ class ECCVGenerator(BaseColor):
return self.unnormalize_ab(self.upsample4(out_reg))
-def eccv16(pretrained=True):
- model = ECCVGenerator()
- if(pretrained):
- import torch.utils.model_zoo as model_zoo
- model.load_state_dict(model_zoo.load_url('https://colorizers.s3.us-east-2.amazonaws.com/colorization_release_v2-9b330a0b.pth',model_dir='./models',map_location='cpu',check_hash=True))
- return model
+def eccv16(pretrained=True, model_path='models/colorization_release_v2-9b330a0b.pth'):
+ model = ECCVGenerator()
+ if pretrained:
+ model.load_state_dict(torch.load(model_path, map_location='cpu'))
+ return model
diff --git a/colorization/models/siggraph17.py b/colorization/models/siggraph17.py
index 8c015e54be2563685970d208622bfca4ebc1a178..ed90a46be5538005e3f21f384146391c37093b6d 100644
--- a/colorization/models/siggraph17.py
+++ b/colorization/models/siggraph17.py
@@ -127,7 +127,7 @@ class SIGGRAPHGenerator(BaseColor):
self.model_class = nn.Sequential(*model_class)
self.model_out = nn.Sequential(*model_out)
- self.upsample4 = nn.Sequential(*[nn.Upsample(scale_factor=4, mode='bilinear'),])
+ self.upsample4 = nn.Sequential(*[nn.Upsample(scale_factor=4, mode='bilinear', align_corners=False),])
self.softmax = nn.Sequential(*[nn.Softmax(dim=1),])
def forward(self, input_A, input_B=None, mask_B=None):
@@ -163,7 +163,6 @@ class SIGGRAPHGenerator(BaseColor):
def siggraph17(pretrained=True, model_path='models/siggraph17-df00044c.pth'):
model = SIGGRAPHGenerator()
- if(pretrained):
- # import torch.utils.model_zoo as model_zoo
+ if pretrained:
model.load_state_dict(torch.load(model_path, map_location='cpu'))
return model
diff --git a/colorization/my_colorize.py b/colorization/my_colorize.py
index d6c517929088289c7a9525a8f0ec6fbc2e7c0d98..a5f506db7189ee090bbcf0772aa8f0f3f9eec51e 100644
--- a/colorization/my_colorize.py
+++ b/colorization/my_colorize.py
@@ -62,8 +62,8 @@ def train_model(model, criterion, optimizer, scheduler, num_epochs=25):
# statistics
running_loss += loss.item() * inputs.size(0)
sys.stdout.write('\r' 'Id ' + str(i) + ', Running loss: ' + str(running_loss))
- if ((i == 5) and (phase == 'test')) or (i == 20):
- break
+ # if ((i == 5) and (phase == 'test')) or (i == 20):
+ # break
# running_corrects += torch.sum(preds == labels.data)
if phase == 'train':
@@ -93,7 +93,7 @@ def train_model(model, criterion, optimizer, scheduler, num_epochs=25):
# load colorizer
-colorizer = siggraph17(pretrained=False)
+colorizer = siggraph17()
for name, param in colorizer.named_parameters():
print(name)
@@ -102,19 +102,18 @@ postcard_dataset = ColDataset(csv_file='models/colored_postcards/akon_postcards_
root_dir='models/colored_postcards/low_res_imgs')
(train_set, test_set) = random_split(postcard_dataset, [round(0.7*len(postcard_dataset)),
round(0.3*len(postcard_dataset))])
-train_loader = DataLoader(train_set, shuffle=True)
-test_loader = DataLoader(test_set)
+train_loader = DataLoader(train_set, shuffle=True, batch_size=10) # batch_size = 5,10,...
+test_loader = DataLoader(test_set, batch_size=10)
dataloaders = {'train': train_loader, 'test': test_loader}
dataset_sizes = {'train': len(train_loader), 'test': len(test_loader)}
criterion = nn.SmoothL1Loss()
optimizer = optim.Adam(colorizer.parameters(), lr=0.001)
scheduler = optim.lr_scheduler.StepLR(optimizer, step_size=7, gamma=0.1)
-
-
+#
# colorizer = train_model(colorizer, criterion, optimizer, scheduler)
# PATH = './models/col_test.pth'
# torch.save(colorizer.state_dict(), PATH)
-
+#
#
# img = load_img('models/colored_postcards/imgs/AK001_011.jpg')
# low_img = load_img('models/colored_postcards/low_res_imgs/AK001_011.jpg')