Upload AI_Image_Classification.ipynb
Browse files- AI_Image_Classification.ipynb +856 -0
AI_Image_Classification.ipynb
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| 1 |
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{
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| 2 |
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"nbformat": 4,
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| 3 |
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"nbformat_minor": 0,
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| 4 |
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"metadata": {
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| 5 |
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"colab": {
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| 6 |
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"private_outputs": true,
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| 7 |
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"provenance": [],
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| 8 |
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"machine_shape": "hm"
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| 9 |
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},
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| 10 |
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"kernelspec": {
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| 11 |
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"name": "python3",
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| 12 |
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"display_name": "Python 3"
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| 13 |
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},
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| 14 |
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"language_info": {
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| 15 |
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"name": "python"
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| 16 |
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}
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| 17 |
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},
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| 18 |
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"cells": [
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| 19 |
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{
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| 20 |
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"cell_type": "code",
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| 21 |
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"execution_count": null,
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| 22 |
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"metadata": {
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| 23 |
+
"id": "CSC6_ShCp6h9"
|
| 24 |
+
},
|
| 25 |
+
"outputs": [],
|
| 26 |
+
"source": [
|
| 27 |
+
"!unzip AI.zip\n",
|
| 28 |
+
"!unzip Photo.zip"
|
| 29 |
+
]
|
| 30 |
+
},
|
| 31 |
+
{
|
| 32 |
+
"cell_type": "code",
|
| 33 |
+
"source": [
|
| 34 |
+
"!pip install umap-learn\n",
|
| 35 |
+
"!pip install PyWavelets"
|
| 36 |
+
],
|
| 37 |
+
"metadata": {
|
| 38 |
+
"id": "N6CWTCziLMbf"
|
| 39 |
+
},
|
| 40 |
+
"execution_count": null,
|
| 41 |
+
"outputs": []
|
| 42 |
+
},
|
| 43 |
+
{
|
| 44 |
+
"cell_type": "code",
|
| 45 |
+
"source": [
|
| 46 |
+
"from sklearn.model_selection import train_test_split\n",
|
| 47 |
+
"from sklearn.metrics import accuracy_score, f1_score, confusion_matrix, ConfusionMatrixDisplay\n",
|
| 48 |
+
"from sklearn.preprocessing import StandardScaler\n",
|
| 49 |
+
"from sklearn.decomposition import PCA\n",
|
| 50 |
+
"import umap\n",
|
| 51 |
+
"import pywt"
|
| 52 |
+
],
|
| 53 |
+
"metadata": {
|
| 54 |
+
"id": "53ZvG8NbATlR"
|
| 55 |
+
},
|
| 56 |
+
"execution_count": null,
|
| 57 |
+
"outputs": []
|
| 58 |
+
},
|
| 59 |
+
{
|
| 60 |
+
"cell_type": "code",
|
| 61 |
+
"source": [
|
| 62 |
+
"# prompt: Create a function to load all the files in a folder as images.\n",
|
| 63 |
+
"\n",
|
| 64 |
+
"import os\n",
|
| 65 |
+
"from PIL import Image\n",
|
| 66 |
+
"def load_images_from_folder(folder):\n",
|
| 67 |
+
" images = []\n",
|
| 68 |
+
" labels = []\n",
|
| 69 |
+
" for filename in os.listdir(folder):\n",
|
| 70 |
+
" if not filename.endswith('.jpg') and not filename.endswith('.png') \\\n",
|
| 71 |
+
" and not filename.endswith('jpeg') and not filename.endswith('webp'):\n",
|
| 72 |
+
" continue\n",
|
| 73 |
+
" img = Image.open(os.path.join(folder,filename))\n",
|
| 74 |
+
" img = img.resize((512, 512))\n",
|
| 75 |
+
" if img is not None:\n",
|
| 76 |
+
" images.append(img)\n",
|
| 77 |
+
" labels.append(1 if folder == \"AI\" else 0)\n",
|
| 78 |
+
" return images, labels"
|
| 79 |
+
],
|
| 80 |
+
"metadata": {
|
| 81 |
+
"id": "BH6bOWUXsi_D"
|
| 82 |
+
},
|
| 83 |
+
"execution_count": null,
|
| 84 |
+
"outputs": []
|
| 85 |
+
},
|
| 86 |
+
{
|
| 87 |
+
"cell_type": "code",
|
| 88 |
+
"source": [
|
| 89 |
+
"# prompt: Can you write a function that can implement the discrete wavelet transform and display the wavelets given in an array for the image? The function should take in an image_path and a list of wavelets and perform the dwt and display the wavelets.\n",
|
| 90 |
+
"\n",
|
| 91 |
+
"import matplotlib.pyplot as plt\n",
|
| 92 |
+
"import numpy as np\n",
|
| 93 |
+
"def apply_wavelet_transform_and_display_multiple(image_path, wavelets):\n",
|
| 94 |
+
" # Load the image\n",
|
| 95 |
+
" img = Image.open(image_path).convert('L')\n",
|
| 96 |
+
"\n",
|
| 97 |
+
" # Convert image to numpy array\n",
|
| 98 |
+
" img_array = np.array(img)\n",
|
| 99 |
+
"\n",
|
| 100 |
+
" num_wavelets = len(wavelets)\n",
|
| 101 |
+
" fig, axes = plt.subplots(1, num_wavelets + 1, figsize=(5 * (num_wavelets + 1), 5))\n",
|
| 102 |
+
"\n",
|
| 103 |
+
" # Display the original image\n",
|
| 104 |
+
" axes[0].imshow(img_array, cmap='gray')\n",
|
| 105 |
+
" axes[0].set_title('Original Image')\n",
|
| 106 |
+
"\n",
|
| 107 |
+
" # Apply DWT and display wavelets\n",
|
| 108 |
+
" for i, wavelet in enumerate(wavelets):\n",
|
| 109 |
+
" cA, cD = pywt.dwt(img_array, wavelet)\n",
|
| 110 |
+
" axes[i + 1].imshow(cD, cmap='gray')\n",
|
| 111 |
+
" axes[i + 1].set_title(f'Approximate Image ({wavelet})')\n",
|
| 112 |
+
"\n",
|
| 113 |
+
" plt.tight_layout()\n",
|
| 114 |
+
" plt.show()\n"
|
| 115 |
+
],
|
| 116 |
+
"metadata": {
|
| 117 |
+
"id": "sBRFYk0C2nfX"
|
| 118 |
+
},
|
| 119 |
+
"execution_count": null,
|
| 120 |
+
"outputs": []
|
| 121 |
+
},
|
| 122 |
+
{
|
| 123 |
+
"cell_type": "code",
|
| 124 |
+
"source": [
|
| 125 |
+
"apply_wavelet_transform_and_display_multiple('kiri-in-high-resolution-love-her-3-v0-ezejx6try3va1.webp', ['db1', 'db6', 'db10', 'db12', 'db16'])"
|
| 126 |
+
],
|
| 127 |
+
"metadata": {
|
| 128 |
+
"id": "KfY3qSfkxJnS"
|
| 129 |
+
},
|
| 130 |
+
"execution_count": null,
|
| 131 |
+
"outputs": []
|
| 132 |
+
},
|
| 133 |
+
{
|
| 134 |
+
"cell_type": "code",
|
| 135 |
+
"source": [
|
| 136 |
+
"# prompt: Can you write a function that given a list of images from PIL can convert them to grayscale and apply a set of wavelets using dwt and then combined them into one feature vector?\n",
|
| 137 |
+
"\n",
|
| 138 |
+
"import numpy as np\n",
|
| 139 |
+
"def extract_wavelet_features(images, wavelets):\n",
|
| 140 |
+
" all_features = []\n",
|
| 141 |
+
" for img in images:\n",
|
| 142 |
+
" img_gray = img.convert('L')\n",
|
| 143 |
+
" img_array = np.array(img_gray)\n",
|
| 144 |
+
" features = []\n",
|
| 145 |
+
" for wavelet in wavelets:\n",
|
| 146 |
+
" cA, cD = pywt.dwt(img_array, wavelet)\n",
|
| 147 |
+
" features.extend(cD.flatten())\n",
|
| 148 |
+
" all_features.append(features)\n",
|
| 149 |
+
" return np.array(all_features)\n"
|
| 150 |
+
],
|
| 151 |
+
"metadata": {
|
| 152 |
+
"id": "ufMhM7_86IbC"
|
| 153 |
+
},
|
| 154 |
+
"execution_count": null,
|
| 155 |
+
"outputs": []
|
| 156 |
+
},
|
| 157 |
+
{
|
| 158 |
+
"cell_type": "code",
|
| 159 |
+
"source": [
|
| 160 |
+
"# prompt: Apply the Fourier transform to the images from the load_images_from_folder function.\n",
|
| 161 |
+
"\n",
|
| 162 |
+
"import numpy as np\n",
|
| 163 |
+
"\n",
|
| 164 |
+
"\n",
|
| 165 |
+
"# Example usage (assuming 'folder_path' contains your images)\n",
|
| 166 |
+
"ai_images, ai_labels = load_images_from_folder('AI')\n",
|
| 167 |
+
"photo_images, photo_labels = load_images_from_folder('Photo')\n",
|
| 168 |
+
"min_length = min(len(ai_images), len(photo_images))\n",
|
| 169 |
+
"ai_images = ai_images[:min_length]\n",
|
| 170 |
+
"photo_images = photo_images[:min_length]\n",
|
| 171 |
+
"ai_labels = ai_labels[:min_length]\n",
|
| 172 |
+
"photo_labels = photo_labels[:min_length]\n",
|
| 173 |
+
"\n",
|
| 174 |
+
"print(f\"Number of AI images: {len(ai_images)}\")\n",
|
| 175 |
+
"print(f\"Number of Photo images: {len(photo_images)}\")\n",
|
| 176 |
+
"images = ai_images + photo_images\n",
|
| 177 |
+
"labels = ai_labels + photo_labels\n",
|
| 178 |
+
"features = np.array(extract_wavelet_features(images, [\"db4\", \"db10\"]))"
|
| 179 |
+
],
|
| 180 |
+
"metadata": {
|
| 181 |
+
"id": "7Pfn_0-QswSh"
|
| 182 |
+
},
|
| 183 |
+
"execution_count": null,
|
| 184 |
+
"outputs": []
|
| 185 |
+
},
|
| 186 |
+
{
|
| 187 |
+
"cell_type": "code",
|
| 188 |
+
"source": [
|
| 189 |
+
"reducer = umap.UMAP(n_neighbors=16, n_components=32, random_state=42)\n",
|
| 190 |
+
"embeddings = reducer.fit_transform(features)"
|
| 191 |
+
],
|
| 192 |
+
"metadata": {
|
| 193 |
+
"id": "xc_1hAuTLdUj"
|
| 194 |
+
},
|
| 195 |
+
"execution_count": null,
|
| 196 |
+
"outputs": []
|
| 197 |
+
},
|
| 198 |
+
{
|
| 199 |
+
"cell_type": "code",
|
| 200 |
+
"source": [
|
| 201 |
+
"reducer.embedding_.dtype"
|
| 202 |
+
],
|
| 203 |
+
"metadata": {
|
| 204 |
+
"id": "qprQSJTCaPpv"
|
| 205 |
+
},
|
| 206 |
+
"execution_count": null,
|
| 207 |
+
"outputs": []
|
| 208 |
+
},
|
| 209 |
+
{
|
| 210 |
+
"cell_type": "code",
|
| 211 |
+
"source": [
|
| 212 |
+
"X_train, X_test, y_train, y_test = train_test_split(embeddings, labels, test_size=0.2, random_state=42)"
|
| 213 |
+
],
|
| 214 |
+
"metadata": {
|
| 215 |
+
"id": "dFQYuL3MbJLj"
|
| 216 |
+
},
|
| 217 |
+
"execution_count": null,
|
| 218 |
+
"outputs": []
|
| 219 |
+
},
|
| 220 |
+
{
|
| 221 |
+
"cell_type": "code",
|
| 222 |
+
"source": [
|
| 223 |
+
"from xgboost import XGBClassifier"
|
| 224 |
+
],
|
| 225 |
+
"metadata": {
|
| 226 |
+
"id": "HoySyJJ4cL3n"
|
| 227 |
+
},
|
| 228 |
+
"execution_count": null,
|
| 229 |
+
"outputs": []
|
| 230 |
+
},
|
| 231 |
+
{
|
| 232 |
+
"cell_type": "code",
|
| 233 |
+
"source": [
|
| 234 |
+
"xgb_clf = XGBClassifier(n_estimators=200, eval_metric=\"logloss\", learning_rate=0.01,\n",
|
| 235 |
+
" reg_lambda=0.8, max_depth=5, gamma=1.0, subsample=0.5,\n",
|
| 236 |
+
" colsample_bytree=0.5, min_child_weight=10)\n",
|
| 237 |
+
"xgb_clf.fit(X_train, y_train, eval_set=[(X_test, y_test)],\n",
|
| 238 |
+
" verbose=True)\n",
|
| 239 |
+
"\n",
|
| 240 |
+
"xgb_clf_pred = xgb_clf.predict(X_test)\n",
|
| 241 |
+
"score = xgb_clf.score(X_test, y_test)\n",
|
| 242 |
+
"print(f\"Accuracy: {score}\")\n",
|
| 243 |
+
"\n",
|
| 244 |
+
"print(f\"F1 score: {f1_score(y_test, xgb_clf_pred)}\")"
|
| 245 |
+
],
|
| 246 |
+
"metadata": {
|
| 247 |
+
"id": "vP5jesFXJHcY"
|
| 248 |
+
},
|
| 249 |
+
"execution_count": null,
|
| 250 |
+
"outputs": []
|
| 251 |
+
},
|
| 252 |
+
{
|
| 253 |
+
"cell_type": "code",
|
| 254 |
+
"source": [
|
| 255 |
+
"# prompt: Calculate the training accuracy\n",
|
| 256 |
+
"\n",
|
| 257 |
+
"xgb_clf_pred_train = xgb_clf.predict(X_train)\n",
|
| 258 |
+
"score = xgb_clf.score(X_train, y_train)\n",
|
| 259 |
+
"print(f\"Training Accuracy: {score}\")\n",
|
| 260 |
+
"\n",
|
| 261 |
+
"score = xgb_clf.score(X_test, y_test)\n",
|
| 262 |
+
"print(f\"Test Accuracy: {score}\")"
|
| 263 |
+
],
|
| 264 |
+
"metadata": {
|
| 265 |
+
"id": "IljcJVxVVlgI"
|
| 266 |
+
},
|
| 267 |
+
"execution_count": null,
|
| 268 |
+
"outputs": []
|
| 269 |
+
},
|
| 270 |
+
{
|
| 271 |
+
"cell_type": "code",
|
| 272 |
+
"source": [
|
| 273 |
+
"# prompt: Can you perform four fold cross validation on the xgboost model?\n",
|
| 274 |
+
"\n",
|
| 275 |
+
"from sklearn.model_selection import cross_val_score, KFold\n",
|
| 276 |
+
"# Perform four-fold cross-validation\n",
|
| 277 |
+
"kfold = KFold(n_splits=4, shuffle=True, random_state=42)\n",
|
| 278 |
+
"scores = cross_val_score(xgb_clf, embeddings, labels, cv=kfold, scoring='accuracy')\n",
|
| 279 |
+
"\n",
|
| 280 |
+
"# Print the cross-validation scores\n",
|
| 281 |
+
"print(\"Cross-validation scores:\", scores)\n",
|
| 282 |
+
"print(\"Average cross-validation score:\", scores.mean())"
|
| 283 |
+
],
|
| 284 |
+
"metadata": {
|
| 285 |
+
"id": "peofLwk78-mE"
|
| 286 |
+
},
|
| 287 |
+
"execution_count": null,
|
| 288 |
+
"outputs": []
|
| 289 |
+
},
|
| 290 |
+
{
|
| 291 |
+
"cell_type": "code",
|
| 292 |
+
"source": [
|
| 293 |
+
"ConfusionMatrixDisplay.from_estimator(xgb_clf, X_test, y_test)"
|
| 294 |
+
],
|
| 295 |
+
"metadata": {
|
| 296 |
+
"id": "5GvVgOoXcbJ-"
|
| 297 |
+
},
|
| 298 |
+
"execution_count": null,
|
| 299 |
+
"outputs": []
|
| 300 |
+
},
|
| 301 |
+
{
|
| 302 |
+
"cell_type": "code",
|
| 303 |
+
"source": [
|
| 304 |
+
"xgb_clf.save_model(\"xgb_flux_detection_model.json\")"
|
| 305 |
+
],
|
| 306 |
+
"metadata": {
|
| 307 |
+
"id": "5TZsByCxQqbU"
|
| 308 |
+
},
|
| 309 |
+
"execution_count": null,
|
| 310 |
+
"outputs": []
|
| 311 |
+
},
|
| 312 |
+
{
|
| 313 |
+
"cell_type": "code",
|
| 314 |
+
"source": [
|
| 315 |
+
"# prompt: A random classifier\n",
|
| 316 |
+
"\n",
|
| 317 |
+
"from sklearn.dummy import DummyClassifier\n",
|
| 318 |
+
"\n",
|
| 319 |
+
"# Initialize a random classifier\n",
|
| 320 |
+
"dummy_clf = DummyClassifier(strategy='uniform') # Predicts randomly\n",
|
| 321 |
+
"\n",
|
| 322 |
+
"# Fit the classifier (not really necessary for a random classifier)\n",
|
| 323 |
+
"dummy_clf.fit(X_train, y_train)\n",
|
| 324 |
+
"\n",
|
| 325 |
+
"# Make predictions\n",
|
| 326 |
+
"dummy_pred = dummy_clf.predict(X_test)\n",
|
| 327 |
+
"\n",
|
| 328 |
+
"# Evaluate the performance\n",
|
| 329 |
+
"score = dummy_clf.score(X_test, y_test)\n",
|
| 330 |
+
"print(f\"Accuracy: {score}\")\n",
|
| 331 |
+
"print(f\"F1 score: {f1_score(y_test, dummy_pred)}\")\n",
|
| 332 |
+
"\n",
|
| 333 |
+
"ConfusionMatrixDisplay.from_estimator(dummy_clf, X_test, y_test)"
|
| 334 |
+
],
|
| 335 |
+
"metadata": {
|
| 336 |
+
"id": "X7qkISlS4QjW"
|
| 337 |
+
},
|
| 338 |
+
"execution_count": null,
|
| 339 |
+
"outputs": []
|
| 340 |
+
},
|
| 341 |
+
{
|
| 342 |
+
"cell_type": "code",
|
| 343 |
+
"source": [
|
| 344 |
+
"# prompt: random forests with pruning\n",
|
| 345 |
+
"\n",
|
| 346 |
+
"from sklearn.ensemble import RandomForestClassifier\n",
|
| 347 |
+
"\n",
|
| 348 |
+
"# Initialize the RandomForestClassifier with pruning parameters\n",
|
| 349 |
+
"rf_clf = RandomForestClassifier(n_estimators=100, # Number of trees in the forest\n",
|
| 350 |
+
" max_depth=5, # Maximum depth of each tree (pruning)\n",
|
| 351 |
+
" min_samples_split=5, # Minimum samples required to split a node (pruning)\n",
|
| 352 |
+
" random_state=42) # Random seed for reproducibility\n",
|
| 353 |
+
"\n",
|
| 354 |
+
"# Fit the classifier to the training data\n",
|
| 355 |
+
"rf_clf.fit(X_train, y_train)\n",
|
| 356 |
+
"\n",
|
| 357 |
+
"# Make predictions on the test data\n",
|
| 358 |
+
"rf_pred = rf_clf.predict(X_test)\n",
|
| 359 |
+
"\n",
|
| 360 |
+
"# Evaluate the performance\n",
|
| 361 |
+
"score = rf_clf.score(X_test, y_test)\n",
|
| 362 |
+
"print(f\"Accuracy: {score}\")\n",
|
| 363 |
+
"\n",
|
| 364 |
+
"print(f\"F1 score: {f1_score(y_test, rf_pred)}\")\n",
|
| 365 |
+
"\n",
|
| 366 |
+
"ConfusionMatrixDisplay.from_estimator(rf_clf, X_test, y_test)"
|
| 367 |
+
],
|
| 368 |
+
"metadata": {
|
| 369 |
+
"id": "3qJFLsYT3xmi"
|
| 370 |
+
},
|
| 371 |
+
"execution_count": null,
|
| 372 |
+
"outputs": []
|
| 373 |
+
},
|
| 374 |
+
{
|
| 375 |
+
"cell_type": "code",
|
| 376 |
+
"source": [
|
| 377 |
+
"# prompt: Can you perform four fold cross validation on the rf model?\n",
|
| 378 |
+
"\n",
|
| 379 |
+
"from sklearn.model_selection import cross_val_score, KFold\n",
|
| 380 |
+
"# Perform four-fold cross-validation\n",
|
| 381 |
+
"kfold = KFold(n_splits=4, shuffle=True, random_state=42)\n",
|
| 382 |
+
"scores = cross_val_score(rf_clf, embeddings, labels, cv=kfold, scoring='accuracy')\n",
|
| 383 |
+
"\n",
|
| 384 |
+
"# Print the cross-validation scores\n",
|
| 385 |
+
"print(\"Cross-validation scores:\", scores)\n",
|
| 386 |
+
"print(\"Average cross-validation score:\", scores.mean())"
|
| 387 |
+
],
|
| 388 |
+
"metadata": {
|
| 389 |
+
"id": "-gDc0KvD9_Yp"
|
| 390 |
+
},
|
| 391 |
+
"execution_count": null,
|
| 392 |
+
"outputs": []
|
| 393 |
+
},
|
| 394 |
+
{
|
| 395 |
+
"cell_type": "code",
|
| 396 |
+
"source": [
|
| 397 |
+
"# prompt: SVC classifier\n",
|
| 398 |
+
"\n",
|
| 399 |
+
"from sklearn.svm import SVC\n",
|
| 400 |
+
"\n",
|
| 401 |
+
"# Initialize the SVC classifier\n",
|
| 402 |
+
"svc_clf = SVC()\n",
|
| 403 |
+
"\n",
|
| 404 |
+
"# Fit the classifier to the training data\n",
|
| 405 |
+
"svc_clf.fit(X_train, y_train)\n",
|
| 406 |
+
"\n",
|
| 407 |
+
"# Make predictions on the test data\n",
|
| 408 |
+
"svc_pred = svc_clf.predict(X_test)\n",
|
| 409 |
+
"\n",
|
| 410 |
+
"# Evaluate the performance\n",
|
| 411 |
+
"score = svc_clf.score(X_test, y_test)\n",
|
| 412 |
+
"print(f\"Accuracy: {score}\")\n",
|
| 413 |
+
"\n",
|
| 414 |
+
"print(f\"F1 score: {f1_score(y_test, svc_pred)}\")\n",
|
| 415 |
+
"\n",
|
| 416 |
+
"ConfusionMatrixDisplay.from_estimator(svc_clf, X_test, y_test)\n"
|
| 417 |
+
],
|
| 418 |
+
"metadata": {
|
| 419 |
+
"id": "1sQjrGeZ8Ir3"
|
| 420 |
+
},
|
| 421 |
+
"execution_count": null,
|
| 422 |
+
"outputs": []
|
| 423 |
+
},
|
| 424 |
+
{
|
| 425 |
+
"cell_type": "code",
|
| 426 |
+
"source": [
|
| 427 |
+
"# prompt: classify with KNN and K=7\n",
|
| 428 |
+
"\n",
|
| 429 |
+
"from sklearn.neighbors import KNeighborsClassifier\n",
|
| 430 |
+
"# Initialize the KNeighborsClassifier with K=7\n",
|
| 431 |
+
"knn_clf = KNeighborsClassifier(n_neighbors=7)\n",
|
| 432 |
+
"\n",
|
| 433 |
+
"# Fit the classifier to the training data\n",
|
| 434 |
+
"knn_clf.fit(X_train, y_train)\n",
|
| 435 |
+
"\n",
|
| 436 |
+
"# Make predictions on the test data\n",
|
| 437 |
+
"knn_pred = knn_clf.predict(X_test)\n",
|
| 438 |
+
"\n",
|
| 439 |
+
"# Evaluate the performance\n",
|
| 440 |
+
"score = knn_clf.score(X_test, y_test)\n",
|
| 441 |
+
"print(f\"Accuracy: {score}\")\n",
|
| 442 |
+
"\n",
|
| 443 |
+
"print(f\"F1 score: {f1_score(y_test, knn_pred)}\")\n",
|
| 444 |
+
"\n",
|
| 445 |
+
"ConfusionMatrixDisplay.from_estimator(knn_clf, X_test, y_test)\n"
|
| 446 |
+
],
|
| 447 |
+
"metadata": {
|
| 448 |
+
"id": "vU8SRYsZ72Sr"
|
| 449 |
+
},
|
| 450 |
+
"execution_count": null,
|
| 451 |
+
"outputs": []
|
| 452 |
+
},
|
| 453 |
+
{
|
| 454 |
+
"cell_type": "code",
|
| 455 |
+
"source": [
|
| 456 |
+
"# prompt: Can you perform four fold cross validation on the KNN model?\n",
|
| 457 |
+
"\n",
|
| 458 |
+
"from sklearn.model_selection import cross_val_score, KFold\n",
|
| 459 |
+
"# Perform four-fold cross-validation\n",
|
| 460 |
+
"kfold = KFold(n_splits=4, shuffle=True, random_state=42)\n",
|
| 461 |
+
"scores = cross_val_score(knn_clf, embeddings, labels, cv=kfold, scoring='accuracy')\n",
|
| 462 |
+
"\n",
|
| 463 |
+
"# Print the cross-validation scores\n",
|
| 464 |
+
"print(\"Cross-validation scores:\", scores)\n",
|
| 465 |
+
"print(\"Average cross-validation score:\", scores.mean())"
|
| 466 |
+
],
|
| 467 |
+
"metadata": {
|
| 468 |
+
"id": "1X9_4kAKRlSm"
|
| 469 |
+
},
|
| 470 |
+
"execution_count": null,
|
| 471 |
+
"outputs": []
|
| 472 |
+
},
|
| 473 |
+
{
|
| 474 |
+
"cell_type": "code",
|
| 475 |
+
"source": [
|
| 476 |
+
"import plotly.express as px\n",
|
| 477 |
+
"# Initialize UMAP with desired parameters\n",
|
| 478 |
+
"reducer = umap.UMAP(n_components=2, random_state=42)\n",
|
| 479 |
+
"\n",
|
| 480 |
+
"# Reduce the dimensionality of the features array\n",
|
| 481 |
+
"embedding = reducer.fit_transform(features)\n",
|
| 482 |
+
"import pandas as pd\n",
|
| 483 |
+
"\n",
|
| 484 |
+
"# Create a DataFrame for Plotly\n",
|
| 485 |
+
"embedding_df = pd.DataFrame(embedding, columns=['UMAP1', 'UMAP2'])\n",
|
| 486 |
+
"embedding_df['label'] = labels\n",
|
| 487 |
+
"# Create a scatter plot\n",
|
| 488 |
+
"fig = px.scatter(\n",
|
| 489 |
+
" embedding_df,\n",
|
| 490 |
+
" x='UMAP1',\n",
|
| 491 |
+
" y='UMAP2',\n",
|
| 492 |
+
" color='label',\n",
|
| 493 |
+
" title='UMAP Dimensionality Reduction',\n",
|
| 494 |
+
" labels={'color': 'Label'}\n",
|
| 495 |
+
")\n",
|
| 496 |
+
"\n",
|
| 497 |
+
"# Show the plot\n",
|
| 498 |
+
"fig.show()"
|
| 499 |
+
],
|
| 500 |
+
"metadata": {
|
| 501 |
+
"id": "wMEQoDF2Goj-"
|
| 502 |
+
},
|
| 503 |
+
"execution_count": null,
|
| 504 |
+
"outputs": []
|
| 505 |
+
},
|
| 506 |
+
{
|
| 507 |
+
"cell_type": "code",
|
| 508 |
+
"source": [
|
| 509 |
+
"# prompt: Save the knn classifier as a file\n",
|
| 510 |
+
"\n",
|
| 511 |
+
"import joblib\n",
|
| 512 |
+
"\n",
|
| 513 |
+
"# Save the knn classifier to a file\n",
|
| 514 |
+
"filename = 'knn_model.pkl'\n",
|
| 515 |
+
"joblib.dump(knn_clf, filename)\n"
|
| 516 |
+
],
|
| 517 |
+
"metadata": {
|
| 518 |
+
"id": "I-Myacr4zsVy"
|
| 519 |
+
},
|
| 520 |
+
"execution_count": null,
|
| 521 |
+
"outputs": []
|
| 522 |
+
},
|
| 523 |
+
{
|
| 524 |
+
"cell_type": "code",
|
| 525 |
+
"source": [
|
| 526 |
+
"# prompt: load the knn model\n",
|
| 527 |
+
"\n",
|
| 528 |
+
"# Load the knn classifier from the file\n",
|
| 529 |
+
"filename = 'knn_model.pkl'\n",
|
| 530 |
+
"loaded_knn_clf = joblib.load(filename)"
|
| 531 |
+
],
|
| 532 |
+
"metadata": {
|
| 533 |
+
"id": "yayMkQELAbZO"
|
| 534 |
+
},
|
| 535 |
+
"execution_count": null,
|
| 536 |
+
"outputs": []
|
| 537 |
+
},
|
| 538 |
+
{
|
| 539 |
+
"cell_type": "code",
|
| 540 |
+
"source": [
|
| 541 |
+
"# prompt: load the validation images and apply the wavelet transforms\n",
|
| 542 |
+
"\n",
|
| 543 |
+
"# Assuming 'validation_folder' contains your validation images\n",
|
| 544 |
+
"validation_images, validation_labels = load_images_from_folder('validation_folder')\n",
|
| 545 |
+
"\n",
|
| 546 |
+
"# Extract wavelet features from validation images\n",
|
| 547 |
+
"validation_features = extract_wavelet_features(validation_images, [\"db4\", \"db10\"])\n",
|
| 548 |
+
"\n",
|
| 549 |
+
"# Reduce dimensionality of validation features using the same UMAP reducer\n",
|
| 550 |
+
"validation_embeddings = reducer.transform(validation_features)\n",
|
| 551 |
+
"\n",
|
| 552 |
+
"# Now you have 'validation_embeddings' and 'validation_labels' for further use\n",
|
| 553 |
+
"# (e.g., evaluating your trained models on validation data)\n"
|
| 554 |
+
],
|
| 555 |
+
"metadata": {
|
| 556 |
+
"id": "GKCz35S8E9jn"
|
| 557 |
+
},
|
| 558 |
+
"execution_count": null,
|
| 559 |
+
"outputs": []
|
| 560 |
+
},
|
| 561 |
+
{
|
| 562 |
+
"cell_type": "markdown",
|
| 563 |
+
"source": [
|
| 564 |
+
"### Validation"
|
| 565 |
+
],
|
| 566 |
+
"metadata": {
|
| 567 |
+
"id": "nrcTRu_ilEGk"
|
| 568 |
+
}
|
| 569 |
+
},
|
| 570 |
+
{
|
| 571 |
+
"cell_type": "code",
|
| 572 |
+
"source": [
|
| 573 |
+
"!unzip Validation.zip"
|
| 574 |
+
],
|
| 575 |
+
"metadata": {
|
| 576 |
+
"id": "Yajcb-E5lDgl"
|
| 577 |
+
},
|
| 578 |
+
"execution_count": null,
|
| 579 |
+
"outputs": []
|
| 580 |
+
},
|
| 581 |
+
{
|
| 582 |
+
"cell_type": "code",
|
| 583 |
+
"source": [
|
| 584 |
+
"# prompt: load the validation images\n",
|
| 585 |
+
"\n",
|
| 586 |
+
"# Assuming 'Validation' is the folder containing your validation images\n",
|
| 587 |
+
"ai_validation_images, ai_validation_labels = load_images_from_folder('Validation/AI')\n",
|
| 588 |
+
"photo_validation_images, photo_validation_labels = load_images_from_folder('Validation/Photo')\n",
|
| 589 |
+
"\n",
|
| 590 |
+
"\n",
|
| 591 |
+
"# Now you have 'validation_images' and 'validation_labels' for further use\n",
|
| 592 |
+
"print(f\"Number of AI Validation images: {len(ai_validation_images)}\")\n",
|
| 593 |
+
"print(f\"Number of Photo Validation images: {len(ai_validation_images)}\")"
|
| 594 |
+
],
|
| 595 |
+
"metadata": {
|
| 596 |
+
"id": "mS8hzT-TlGER"
|
| 597 |
+
},
|
| 598 |
+
"execution_count": null,
|
| 599 |
+
"outputs": []
|
| 600 |
+
},
|
| 601 |
+
{
|
| 602 |
+
"cell_type": "code",
|
| 603 |
+
"source": [
|
| 604 |
+
"# prompt: Combine both validation datasets and extract the wavelet features.\n",
|
| 605 |
+
"\n",
|
| 606 |
+
"# Combine validation datasets\n",
|
| 607 |
+
"validation_images = ai_validation_images + photo_validation_images\n",
|
| 608 |
+
"validation_labels = ai_validation_labels + photo_validation_labels\n",
|
| 609 |
+
"\n",
|
| 610 |
+
"# Extract wavelet features from validation images\n",
|
| 611 |
+
"validation_features = extract_wavelet_features(validation_images, [\"db4\", \"db10\"])"
|
| 612 |
+
],
|
| 613 |
+
"metadata": {
|
| 614 |
+
"id": "iTeZUqEblbu1"
|
| 615 |
+
},
|
| 616 |
+
"execution_count": null,
|
| 617 |
+
"outputs": []
|
| 618 |
+
},
|
| 619 |
+
{
|
| 620 |
+
"cell_type": "code",
|
| 621 |
+
"source": [
|
| 622 |
+
"# prompt: apply the reducer to find the validation embeddings\n",
|
| 623 |
+
"\n",
|
| 624 |
+
"# Reduce dimensionality of validation features using the same UMAP reducer\n",
|
| 625 |
+
"validation_embeddings = reducer.transform(validation_features)"
|
| 626 |
+
],
|
| 627 |
+
"metadata": {
|
| 628 |
+
"id": "jdUbmE4Hltng"
|
| 629 |
+
},
|
| 630 |
+
"execution_count": null,
|
| 631 |
+
"outputs": []
|
| 632 |
+
},
|
| 633 |
+
{
|
| 634 |
+
"cell_type": "code",
|
| 635 |
+
"source": [
|
| 636 |
+
"# prompt: find the accuracy and f1 score on the knn classifier for validation features\n",
|
| 637 |
+
"\n",
|
| 638 |
+
"# Make predictions on the validation data\n",
|
| 639 |
+
"knn_pred_validation = knn_clf.predict(validation_embeddings)\n",
|
| 640 |
+
"\n",
|
| 641 |
+
"# Evaluate the performance on validation data\n",
|
| 642 |
+
"score_validation = knn_clf.score(validation_embeddings, validation_labels)\n",
|
| 643 |
+
"print(f\"Validation Accuracy: {score_validation}\")\n",
|
| 644 |
+
"\n",
|
| 645 |
+
"print(f\"Validation F1 score: {f1_score(validation_labels, knn_pred_validation)}\")\n"
|
| 646 |
+
],
|
| 647 |
+
"metadata": {
|
| 648 |
+
"id": "ls2ij5VxlyOX"
|
| 649 |
+
},
|
| 650 |
+
"execution_count": null,
|
| 651 |
+
"outputs": []
|
| 652 |
+
},
|
| 653 |
+
{
|
| 654 |
+
"cell_type": "code",
|
| 655 |
+
"source": [
|
| 656 |
+
"# prompt: Can you combine the entire pipeline into one class?\n",
|
| 657 |
+
"\n",
|
| 658 |
+
"from sklearn.model_selection import train_test_split\n",
|
| 659 |
+
"from sklearn.metrics import accuracy_score, f1_score, confusion_matrix, ConfusionMatrixDisplay\n",
|
| 660 |
+
"from sklearn.preprocessing import StandardScaler\n",
|
| 661 |
+
"from sklearn.decomposition import PCA\n",
|
| 662 |
+
"import umap\n",
|
| 663 |
+
"import pywt\n",
|
| 664 |
+
"import os\n",
|
| 665 |
+
"from PIL import Image\n",
|
| 666 |
+
"import matplotlib.pyplot as plt\n",
|
| 667 |
+
"import numpy as np\n",
|
| 668 |
+
"from xgboost import XGBClassifier\n",
|
| 669 |
+
"from sklearn.model_selection import cross_val_score, KFold\n",
|
| 670 |
+
"from sklearn.dummy import DummyClassifier\n",
|
| 671 |
+
"from sklearn.ensemble import RandomForestClassifier\n",
|
| 672 |
+
"from sklearn.svm import SVC\n",
|
| 673 |
+
"from sklearn.neighbors import KNeighborsClassifier\n",
|
| 674 |
+
"from sklearn.model_selection import train_test_split\n",
|
| 675 |
+
"from sklearn.metrics import classification_report\n",
|
| 676 |
+
"import plotly.express as px\n",
|
| 677 |
+
"import pandas as pd\n",
|
| 678 |
+
"import joblib\n",
|
| 679 |
+
"from tqdm import tqdm\n",
|
| 680 |
+
"import lzma\n",
|
| 681 |
+
"\n",
|
| 682 |
+
"class FluxClassifier:\n",
|
| 683 |
+
" def __init__(self, wavelets=[\"db4\", \"db10\"], umap_n_neighbors=16, umap_n_components=32, random_state=42):\n",
|
| 684 |
+
" self.wavelets = wavelets\n",
|
| 685 |
+
" self.umap_n_neighbors = umap_n_neighbors\n",
|
| 686 |
+
" self.umap_n_components = umap_n_components\n",
|
| 687 |
+
" self.random_state = random_state\n",
|
| 688 |
+
" self.reducer = umap.UMAP(n_neighbors=self.umap_n_neighbors,\n",
|
| 689 |
+
" n_components=self.umap_n_components,\n",
|
| 690 |
+
" random_state=self.random_state)\n",
|
| 691 |
+
" self.classifier = KNeighborsClassifier(n_neighbors=7) # Default classifier\n",
|
| 692 |
+
"\n",
|
| 693 |
+
" def load_images_from_folder(self, folder):\n",
|
| 694 |
+
" images = []\n",
|
| 695 |
+
" labels = []\n",
|
| 696 |
+
" print(f\"Loading images from {folder}\")\n",
|
| 697 |
+
" for filename in tqdm(os.listdir(folder)):\n",
|
| 698 |
+
" if not (filename.endswith('.jpg') or filename.endswith('.png') or\n",
|
| 699 |
+
" filename.endswith('jpeg') or filename.endswith('webp')):\n",
|
| 700 |
+
" continue\n",
|
| 701 |
+
" img = Image.open(os.path.join(folder, filename))\n",
|
| 702 |
+
" img = img.resize((512, 512))\n",
|
| 703 |
+
" if img is not None:\n",
|
| 704 |
+
" images.append(img)\n",
|
| 705 |
+
" labels.append(1 if \"AI\" in folder else 0) # Assuming folder names contain \"AI\" or not\n",
|
| 706 |
+
" return images, labels\n",
|
| 707 |
+
"\n",
|
| 708 |
+
" def extract_wavelet_features(self, images):\n",
|
| 709 |
+
" all_features = []\n",
|
| 710 |
+
" for img in images:\n",
|
| 711 |
+
" img_gray = img.convert('L')\n",
|
| 712 |
+
" img_array = np.array(img_gray)\n",
|
| 713 |
+
" features = []\n",
|
| 714 |
+
" for wavelet in self.wavelets:\n",
|
| 715 |
+
" cA, cD = pywt.dwt(img_array, wavelet)\n",
|
| 716 |
+
" features.extend(cD.flatten())\n",
|
| 717 |
+
" all_features.append(features)\n",
|
| 718 |
+
" return np.array(all_features)\n",
|
| 719 |
+
"\n",
|
| 720 |
+
" def fit(self, train_folder1, train_folder2):\n",
|
| 721 |
+
" # Load images and extract features\n",
|
| 722 |
+
" images1, labels1 = self.load_images_from_folder(train_folder1)\n",
|
| 723 |
+
" images2, labels2 = self.load_images_from_folder(train_folder2)\n",
|
| 724 |
+
"\n",
|
| 725 |
+
" min_length = min(len(images1), len(images2))\n",
|
| 726 |
+
" images1 = images1[:min_length]\n",
|
| 727 |
+
" images2 = images2[:min_length]\n",
|
| 728 |
+
" labels1 = labels1[:min_length]\n",
|
| 729 |
+
" labels2 = labels2[:min_length]\n",
|
| 730 |
+
"\n",
|
| 731 |
+
" images = images1 + images2\n",
|
| 732 |
+
" labels = labels1 + labels2\n",
|
| 733 |
+
" features = self.extract_wavelet_features(images)\n",
|
| 734 |
+
"\n",
|
| 735 |
+
" # Apply UMAP dimensionality reduction\n",
|
| 736 |
+
" embeddings = self.reducer.fit_transform(features)\n",
|
| 737 |
+
" X_train, X_test, y_train, y_test = train_test_split(embeddings, labels, test_size=0.2, random_state=42)\n",
|
| 738 |
+
"\n",
|
| 739 |
+
" # Train the classifier\n",
|
| 740 |
+
" self.classifier.fit(X_train, y_train)\n",
|
| 741 |
+
"\n",
|
| 742 |
+
" acc = self.classifier.score(X_test, y_test)\n",
|
| 743 |
+
" y_pred = self.classifier.predict(X_test)\n",
|
| 744 |
+
" print(f\"Classifier accuracy = {acc}\")\n",
|
| 745 |
+
"\n",
|
| 746 |
+
" f1 = f1_score(y_test, y_pred)\n",
|
| 747 |
+
" print(f\"Classifier F1 = {f1}\")\n",
|
| 748 |
+
" print(classification_report(y_test, y_pred))\n",
|
| 749 |
+
"\n",
|
| 750 |
+
"\n",
|
| 751 |
+
" def predict(self, images):\n",
|
| 752 |
+
" # Load images and extract features\n",
|
| 753 |
+
" features = self.extract_wavelet_features(images)\n",
|
| 754 |
+
"\n",
|
| 755 |
+
" # Apply UMAP dimensionality reduction\n",
|
| 756 |
+
" embeddings = self.reducer.transform(features)\n",
|
| 757 |
+
"\n",
|
| 758 |
+
" # Make predictions\n",
|
| 759 |
+
" return self.classifier.predict(embeddings)\n",
|
| 760 |
+
"\n",
|
| 761 |
+
" def predict_proba(self, images):\n",
|
| 762 |
+
" # Load images and extract features\n",
|
| 763 |
+
" features = self.extract_wavelet_features(images)\n",
|
| 764 |
+
"\n",
|
| 765 |
+
" # Apply UMAP dimensionality reduction\n",
|
| 766 |
+
" embeddings = self.reducer.transform(features)\n",
|
| 767 |
+
"\n",
|
| 768 |
+
" # Make predictions\n",
|
| 769 |
+
" return self.classifier.predict_proba(embeddings)\n",
|
| 770 |
+
"\n",
|
| 771 |
+
" def score(self, test_folder):\n",
|
| 772 |
+
" # Load images and extract features\n",
|
| 773 |
+
" images, labels = self.load_images_from_folder(test_folder)\n",
|
| 774 |
+
" features = self.extract_wavelet_features(images)\n",
|
| 775 |
+
"\n",
|
| 776 |
+
" # Apply UMAP dimensionality reduction\n",
|
| 777 |
+
" embeddings = self.reducer.transform(features)\n",
|
| 778 |
+
"\n",
|
| 779 |
+
" # Evaluate the classifier\n",
|
| 780 |
+
" return self.classifier.score(embeddings, labels)\n",
|
| 781 |
+
"\n",
|
| 782 |
+
" def save_model(self, filename):\n",
|
| 783 |
+
" joblib.dump(self, filename, compress=('zlib', 9))\n",
|
| 784 |
+
"\n",
|
| 785 |
+
" @staticmethod\n",
|
| 786 |
+
" def load_model(filename):\n",
|
| 787 |
+
" return joblib.load(filename)"
|
| 788 |
+
],
|
| 789 |
+
"metadata": {
|
| 790 |
+
"id": "V8NO_N4QteQK"
|
| 791 |
+
},
|
| 792 |
+
"execution_count": null,
|
| 793 |
+
"outputs": []
|
| 794 |
+
},
|
| 795 |
+
{
|
| 796 |
+
"cell_type": "code",
|
| 797 |
+
"source": [
|
| 798 |
+
"classifier = FluxClassifier()\n",
|
| 799 |
+
"classifier.fit(\"AI\", \"Photo\")"
|
| 800 |
+
],
|
| 801 |
+
"metadata": {
|
| 802 |
+
"id": "sFYjKz1L6xgg"
|
| 803 |
+
},
|
| 804 |
+
"execution_count": null,
|
| 805 |
+
"outputs": []
|
| 806 |
+
},
|
| 807 |
+
{
|
| 808 |
+
"cell_type": "code",
|
| 809 |
+
"source": [
|
| 810 |
+
"classifier.save_model(\"flux_classifier.pkl\")"
|
| 811 |
+
],
|
| 812 |
+
"metadata": {
|
| 813 |
+
"id": "tiLVrOTF_ZGM"
|
| 814 |
+
},
|
| 815 |
+
"execution_count": null,
|
| 816 |
+
"outputs": []
|
| 817 |
+
},
|
| 818 |
+
{
|
| 819 |
+
"cell_type": "code",
|
| 820 |
+
"source": [
|
| 821 |
+
"# prompt: save the model to my google drive.\n",
|
| 822 |
+
"\n",
|
| 823 |
+
"from google.colab import drive\n",
|
| 824 |
+
"drive.mount('/content/drive')\n",
|
| 825 |
+
"!cp flux_classifier.pkl /content/drive/MyDrive"
|
| 826 |
+
],
|
| 827 |
+
"metadata": {
|
| 828 |
+
"id": "sXo1mHFSADuS"
|
| 829 |
+
},
|
| 830 |
+
"execution_count": null,
|
| 831 |
+
"outputs": []
|
| 832 |
+
},
|
| 833 |
+
{
|
| 834 |
+
"cell_type": "code",
|
| 835 |
+
"source": [
|
| 836 |
+
"images = [Image.open(\"pDGQUK1BYaJYhrFB5ouQU.jpeg\"), Image.open(\"jenta2.jpeg\")]\n",
|
| 837 |
+
"predictions = classifier.predict_proba(images)\n",
|
| 838 |
+
"print(predictions)"
|
| 839 |
+
],
|
| 840 |
+
"metadata": {
|
| 841 |
+
"id": "cNVwQ7Oq6vWa"
|
| 842 |
+
},
|
| 843 |
+
"execution_count": null,
|
| 844 |
+
"outputs": []
|
| 845 |
+
},
|
| 846 |
+
{
|
| 847 |
+
"cell_type": "code",
|
| 848 |
+
"source": [],
|
| 849 |
+
"metadata": {
|
| 850 |
+
"id": "98TbK3uH-_CD"
|
| 851 |
+
},
|
| 852 |
+
"execution_count": null,
|
| 853 |
+
"outputs": []
|
| 854 |
+
}
|
| 855 |
+
]
|
| 856 |
+
}
|