怎么在pytorch立更换输入图片

您可以使用以下代码在PyTorch中更改输入图像：

import torch
from torchvision import transforms
from PIL import Image

# Load the original image
img = Image.open("original_image.jpg")

# Define preprocessing steps for the image
transform = transforms.Compose([
    transforms.Resize((224, 224)),
    transforms.ToTensor(),
    transforms.Normalize(mean=[0.485, 0.456, 0.406],
                         std=[0.229, 0.224, 0.225])
])

# Preprocess the image
img = transform(img)

# Create a new batch of images with the same image
batch = img.unsqueeze(0)

# Replace the image in the batch with a new image
new_img = Image.open("new_image.jpg")
new_img = transform(new_img)
batch[0] = new_img

# Create a model to do some prediction on the image
model = torch.hub.load('pytorch/vision', 'resnet18', pretrained=True)
model.eval()

# Make a prediction on the original image
prediction = model(batch)

print(prediction)

上述代码将预处理图像并将其传递给模型进行预测。要更改图像，请更改`new_image.jpg`的名称并将其放在脚本目录中。运行脚本将对新图像进行预测。