Change size of an image file
usage: image-resize [-h] (--width pix | --height pix) [--up] imagefile
Resize image file.
positional arguments:
imagefile image file name
optional arguments:
-h, --help show this help message and exit
--width pix, -w pix width(pixel)
--height pix, -H pix height(pixel)
--up, -u accept scale up