GetCurrentImage.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
GetCurrentImage.py | David Haberthür <david.haberthuer@psi.ch>

Minimal script to get current camera image from EPICS and display it
"""

# Import necessary modules
from epicsPV import epicsPV
import numpy
import matplotlib.pyplot as plt

# Initialize EPICS channels. The channel names have been found in
# /import/work/sls/java/ImageJ/plugins/EPICS_ccdconnection/EPICS_CC_Viewer.java
chImage = epicsPV('X02DA-CCDCAM:FPICTURE')
chImageWidth = epicsPV('X02DA-CCDCAM:WIDTH')
chImageHeight = epicsPV('X02DA-CCDCAM:HEIGHT')
# Read image size and put the values into a list
ImageSize = [int(chImageHeight.getw()), int(chImageWidth.getw())]
# Read the EPICS image channel. This is a stream of numbers, which we put into
# an array and reshape this array to the image size. The image values should
# then be unsigned integers (0 to 65535), we thus convert the array to 'uint16'
Image = numpy.asarray(chImage.getw()).reshape(ImageSize).astype('uint16')
plt.imshow(Image, cmap='gray', interpolation='nearest')
plt.show()

Just a side mark, when coding python you should try to somehow stick with https://www.python.org/dev/peps/pep-0008/

@simon: I absolutely agree. My pep8 only complains about "W292 no newline at end of file" in this case...