5. Image frombuffer

See: https://pillow.readthedocs.io/en/stable/reference/Image.html#PIL.Image.Image.frombuffer

5.1. Frombuffer

Use the frombuffer(mode, size, data, decoder_name='raw', *args) to return an image referencing pixel data in a byte buffer.
This function is similar to frombytes(), but uses data in the byte buffer, where possible. This means that changes to the original buffer object are reflected in this image.
Supported modes include “L”, “RGBX”, “RGBA”, and “CMYK”.
Note that this function decodes pixel data only, not entire images. If you have an entire image file in a string, wrap it in a BytesIO object, and use open() to load it.
mode - The image mode. See: Modes.
size - The image size.
data - A bytes or other buffer object containing raw data for the given mode.
decoder_name - What decoder to use.
args -Additional parameters for the given decoder. For the default encoder (“raw”), it’s recommended that you provide the full set of parameters.

5.2. Frombuffer image

The code below has bytes for 8 pixels that are then repeated to fill an image of size 64 x 64.
from PIL import Image


data = bytearray(b'\x00\x00\x50\x50\xff\xff\x50\x50') * 128 * 4

im = Image.frombuffer("L", (64, 64), data, 'raw', "L", 0, 1)
im.save("images/Image_frombuffer.png")
../_images/Image_frombuffer.png