Thank you.
You are very right. The show() method is intended for debugging purposes
and is useful for that, but what method should I be using and is PIL the
best imaging library for my purposes? I do not want to manipulate
images, I only want to show images (full screen) on an external display.
I want to use Python to control the timing of the images.
And, out of curiosity, as I will probably use a different method - how
do I find out what commands can be used as parameters for show()? I read
the docs at
<https://pillow.readthedocs.io/en/5.1.x/reference/Image.html#PIL.Image.Image.show>,
but I am none the wiser.
On 26/05/2018 01:02, boB Stepp wrote:
On Fri, May 25, 2018 at 6:04 AM, Paul St George <em...@paulstgeorge.com> wrote:
I am using the Python Imaging Library (PIL), Python 2 and Raspberry Pi 3 B+
My code is simply:
from PIL import Image
im = Image.open(‘somepic.jpg’)
im.show() # display image
But the show() method looks for the default viewer (probably xv). How do I
change this (in the code, or in some settings) to a different viewer (of my
choice)?
In the PIL docs for show() at
https://pillow.readthedocs.io/en/5.1.x/reference/Image.html#PIL.Image.Image.show
it says:
<quote>
Image.show(title=None, command=None)
Displays this image. This method is mainly intended for debugging purposes.
On Unix platforms, this method saves the image to a temporary PPM
file, and calls either the xv utility or the display utility,
depending on which one can be found.
On macOS, this method saves the image to a temporary BMP file, and
opens it with the native Preview application.
On Windows, it saves the image to a temporary BMP file, and uses the
standard BMP display utility to show it (usually Paint).
Parameters:
title – Optional title to use for the image window, where possible.
command – command used to show the image
</quote>
I have not had occasion to use PIL, but perhaps this command parameter
can be used to do what you want? If not then perhaps you can write
your own function to load your image into your favorite image viewer.
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