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CNN_Website/api/util.py
T
2026-05-12 17:56:31 +02:00

37 lines
810 B
Python

from PIL import Image
import os
from matplotlib import pyplot as plt
import torch
class TransformedSubset(torch.utils.data.Dataset):
def __init__(self, subset, transform=None):
self.subset = subset
self.transform = transform
def __getitem__(self, idx):
x, y = self.subset[idx]
if self.transform:
x = self.transform(x)
return x, y
def __len__(self):
return len(self.subset)
def visualizeData(dataset):
images, labels = next(iter(dataset))
for i in range(4):
img = images[i]
# Convert tensor shape from [C,H,W] -> [H,W,C]
img = img.permute(1, 2, 0)
plt.figure(figsize=(3,3))
plt.imshow(img)
plt.title(f"Label: {labels[i].item()}")
plt.axis("off")
plt.show()