Fixes Caltech dataset broken link (#1165)

* Fixes broken link for Caltech Dataset

Fixes broken link for Caltech Dataset. Patch clone for #1066. 
Trying to copy the changes to .ipynb and .md on behalf of leaving team.

* Copied the changes to md and ipynb

Copied the changes to md and ipynb.  also updated the download link for caltech zip file  in code.
path_to_downloaded_file

* copied the changes to .ipynb and .md

copied the changes to .ipynb and .md

* Updated path_to_download_file in the .py file

Updated path_to_download_file in the .py file

Author: mohantym

examples/vision/ipynb/object_detection_using_vision_transformer.ipynb

@@ -30,7 +30,7 @@
     "\n",
     "In this Keras example, we implement an object detection ViT\n",
     "and we train it on the\n",
-    "[Caltech 101 dataset](http://www.vision.caltech.edu/datasets/)\n",
+    "[Caltech 101 dataset](https://data.caltech.edu/records/mzrjq-6wc02)\n",
     "to detect an airplane in the given image.\n",
     "\n",
     "This example requires TensorFlow 2.4 or higher, and\n",
@@ -99,7 +99,7 @@
     "\n",
     "path_to_downloaded_file = keras.utils.get_file(\n",
     "    fname=\"caltech_101_zipped\",\n",
-    "    origin=\"https://data.caltech.edu/tindfiles/serve/e41f5188-0b32-41fa-801b-d1e840915e80/\",\n",
+    "    origin=\"https://data.caltech.edu/records/mzrjq-6wc02/files/caltech-101.zip\",\n",
     "    extract=True,\n",
     "    archive_format=\"zip\",  # downloaded file format\n",
     "    cache_dir=\"/\",  # cache and extract in current directory\n",
@@ -684,4 +684,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 0
-}
+}

examples/vision/md/object_detection_using_vision_transformer.md

@@ -54,7 +54,7 @@ import shutil
 ---
 ## Prepare dataset
 
-We use the [Caltech 101 Dataset](http://www.vision.caltech.edu/Image_Datasets/Caltech101/).
+We use the [Caltech 101 Dataset](https://data.caltech.edu/records/mzrjq-6wc02).
 
 
 ```python
@@ -64,7 +64,7 @@ path_annot = "/Annotations/Airplanes_Side_2/"
 
 path_to_downloaded_file = keras.utils.get_file(
     fname="caltech_101_zipped",
-    origin="https://data.caltech.edu/tindfiles/serve/e41f5188-0b32-41fa-801b-d1e840915e80/",
+    origin="https://data.caltech.edu/records/mzrjq-6wc02/files/caltech-101.zip",
     extract=True,
     archive_format="zip",  # downloaded file format
     cache_dir="/",  # cache and extract in current directory

examples/vision/object_detection_using_vision_transformer.py

@@ -51,7 +51,7 @@
 """
 ## Prepare dataset
 
-We use the [Caltech 101 Dataset](http://www.vision.caltech.edu/Image_Datasets/Caltech101/).
+We use the [Caltech 101 Dataset](https://data.caltech.edu/records/mzrjq-6wc02).
 """
 
 # Path to images and annotations
@@ -60,7 +60,7 @@
 
 path_to_downloaded_file = keras.utils.get_file(
     fname="caltech_101_zipped",
-    origin="https://data.caltech.edu/tindfiles/serve/e41f5188-0b32-41fa-801b-d1e840915e80/",
+    origin="https://data.caltech.edu/records/mzrjq-6wc02/files/caltech-101.zip",
     extract=True,
     archive_format="zip",  # downloaded file format
     cache_dir="/",  # cache and extract in current directory