description: st.camera_input displays a widget to upload images from a camera
To read the image file buffer as bytes, you can use getvalue() on the UploadedFile object.
```python
import streamlit as st
img_file_buffer = st.camera_input("Take a picture")
if img_file_buffer is not None:
    # To read image file buffer as bytes:
    bytes_data = img_file_buffer.getvalue()
    # Check the type of bytes_data:
    # Should output: 
    st.write(type(bytes_data))
```
st.camera_input returns an object of the UploadedFile class, which a subclass of BytesIO. Therefore it is a "file-like" object. This means you can pass it anywhere where a file is expected, similar to st.file_uploader.
Image processing examples
You can use the output of st.camera_input for various downstream tasks, including image processing. Below, we demonstrate how to use the st.camera_input widget with popular image and data processing libraries such as Pillow, NumPy, OpenCV, TensorFlow, torchvision, and PyTorch.
