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*Mémos :
FiveCrop() peut recadrer une image en 5 parties (haut gauche, haut droit, bas gauche, bas droit et centre) comme indiqué ci-dessous :
*Mémos :
from torchvision.datasets import OxfordIIITPet from torchvision.transforms.v2 import FiveCrop fivecrop = FiveCrop(size=100) fivecrop # FiveCrop(size=(100, 100)) fivecrop.size # (100, 100) origin_data = OxfordIIITPet( root="data", transform=None ) p500p394origin_data = OxfordIIITPet( root="data", transform=FiveCrop(size=[500, 394]) # transform=FiveCrop(size=[600]) # transform=FiveCrop(size=[600, 600]) ) p300_data = OxfordIIITPet( root="data", transform=FiveCrop(size=300) ) p200_data = OxfordIIITPet( root="data", transform=FiveCrop(size=200) ) p100_data = OxfordIIITPet( root="data", transform=FiveCrop(size=100) ) p50_data = OxfordIIITPet( root="data", transform=FiveCrop(size=50) ) p10_data = OxfordIIITPet( root="data", transform=FiveCrop(size=10) ) p200p300_data = OxfordIIITPet( root="data", transform=FiveCrop(size=[200, 300]) ) p300p200_data = OxfordIIITPet( root="data", transform=FiveCrop(size=[300, 200]) ) import matplotlib.pyplot as plt def show_images1(fcims, main_title=None): plt.figure(figsize=(10, 5)) plt.suptitle(t=main_title, y=0.8, fontsize=14) titles = ['Top-left', 'Top-right', 'bottom-left', 'bottom-right', 'center'] for i, fcim in zip(range(1, 6), fcims): plt.subplot(1, 5, i) plt.title(label=titles[i-1], fontsize=14) plt.imshow(X=fcim) plt.tight_layout() plt.show() plt.figure(figsize=(7, 9)) plt.title(label="Origin_data", fontsize=14) plt.imshow(X=origin_data[0][0]) show_images1(fcims=p500p394origin_data[0][0], main_title="p500p394origin_data") show_images1(fcims=p300_data[0][0], main_title="p300_data") show_images1(fcims=p200_data[0][0], main_title="p200_data") show_images1(fcims=p100_data[0][0], main_title="p100_data") show_images1(fcims=p50_data[0][0], main_title="p50_data") show_images1(fcims=p10_data[0][0], main_title="p10_data") show_images1(fcims=p200p300_data[0][0], main_title="p200p300_data") show_images1(fcims=p300p200_data[0][0], main_title="p300p200_data") # ↓ ↓ ↓ ↓ ↓ ↓ The code below is identical to the code above. ↓ ↓ ↓ ↓ ↓ ↓ def show_images2(im, main_title=None, s=None): plt.figure(figsize=(10, 5)) plt.suptitle(t=main_title, y=0.8, fontsize=14) titles = ['Top-left', 'Top-right', 'bottom-left', 'bottom-right', 'center'] if not s: s = [im.size[1], im.size[0]] fc = FiveCrop(size=s) # Here for i, fcim in zip(range(1, 6), fc(im)): plt.subplot(1, 5, i) plt.title(label=titles[i-1], fontsize=14) plt.imshow(X=fcim) # Here plt.tight_layout() plt.show() plt.figure(figsize=(7, 9)) plt.title(label="Origin_data", fontsize=14) plt.imshow(X=origin_data[0][0]) show_images2(im=origin_data[0][0], main_title="p500p394origin_data") # show_images2(im=origin_data[0][0], main_title="p500p394origin_data", # s=[500, 394]) show_images2(im=origin_data[0][0], main_title="p300_data", s=300) show_images2(im=origin_data[0][0], main_title="p200_data", s=200) show_images2(im=origin_data[0][0], main_title="p100_data", s=100) show_images2(im=origin_data[0][0], main_title="p50_data", s=50) show_images2(im=origin_data[0][0], main_title="p10_data", s=10) show_images2(im=origin_data[0][0], main_title="p200p300_data", s=[200, 300]) show_images2(im=origin_data[0][0], main_title="p300p200_data", s=[300, 200])
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