Change transforms gallery thumbnail (#4505)

* Change transforms gallery thumbnail

* Change visualization utils and repurposing annotations gallery thumbnails

gallery/plot_repurposing_annotations.py

@@ -10,6 +10,7 @@ segmentation masks into object localization annotations for different tasks
 methods into bounding boxes used by object detection methods).
 """
 
+# sphinx_gallery_thumbnail_path = "../../gallery/assets/repurposing_annotations_thumbnail.png"
 
 import os
 import numpy as np

gallery/plot_transforms.py

@@ -7,6 +7,8 @@ This example illustrates the various transforms available in :ref:`the
 torchvision.transforms module <transforms>`.
 """
 
+# sphinx_gallery_thumbnail_path = "../../gallery/assets/transforms_thumbnail.png"
+
 from PIL import Image
 from pathlib import Path
 import matplotlib.pyplot as plt

gallery/plot_visualization_utils.py

@@ -7,6 +7,7 @@ This example illustrates some of the utilities that torchvision offers for
 visualizing images, bounding boxes, and segmentation masks.
 """
 
+# sphinx_gallery_thumbnail_path = "../../gallery/assets/visualization_utils_thumbnail.png"
 
 import torch
 import numpy as np