app.py

# URL: https://huggingface.co/spaces/abidlabs/image_classification
# DESCRIPTION: Simple image classification in Pytorch with Gradio's Image input and Label output.
# imports
import gradio as gr
import torch
import requests
from torchvision import transforms

# load the model 
model = torch.hub.load('pytorch/vision:v0.6.0', 'resnet18', pretrained=True).eval()

# download human-readable labels for ImageNet.
response = requests.get("https://git.io/JJkYN")
labels = response.text.split("\n")

# define core function
def predict(inp):
  inp = transforms.ToTensor()(inp).unsqueeze(0)
  with torch.no_grad():
    prediction = torch.nn.functional.softmax(model(inp)[0], dim=0)
    confidences = {labels[i]: float(prediction[i]) for i in range(1000)}    
  return confidences

# define the interface 
demo = gr.Interface(fn=predict, 
             inputs=gr.inputs.Image(type="pil"),
             outputs=gr.outputs.Label(num_top_classes=3),
             examples=[["cheetah.jpg"]],
             )
             
# launch
demo.launch()