Mask image generation python

mask_pil.py

## Rectangle mask
size = (1280, 720)
first_half = (size[0]/2, size[1])
second_half = (first_size_half[0]+1, size[1])

mask = Image.new("L", size, 255)
draw = ImageDraw.Draw(mask)
draw.rectangle((second_half[0], 0, size[0], size[1]), fill=0)
mask.save("/tmp/mask.jpg")

## Ellipse mask
mask = Image.new("L", size, 0)
draw = ImageDraw.Draw(mask)
draw.ellipse((140, 50, 260, 170), fill=255)
mask.save("/tmp/mask_eclipse.jpg")