Example 10 - Image Averaging

Up \| Example 01 - Calculate Area \| Example 02 - Calculate mean value \| Example 03 - Manipulate the results from two LineFinders \| Example 04 - Dynamic threshold \| Example 05 - Auto Exposure \| Example 06 - DrawLine \| Example 07 - Overlays \| Example 08 - Python Objects \| Example 09 - Timing \| Example 10 - Image Averaging \| Example 11 - Image Resampling \| Example 12 - Constant Contrast \| Example 13 - Serial Communication \| Example 14 - Python results \| Example 15 - Making a result string \| Example 16 - Running tools from a script \| Example 17 - Image Manipulation using Python Scripting \| Example 18 - Calculating the median angle \| Example 19 - Iterating objects located by a blob \| Example 20 - Resampling using non-linear calibration \| Example 21 - Custom Scorpion Python extension \| Example 22 - Accessing Image Pixels \| Example 23 - Implementing a tcp/ip Socket Server \| Example 24 - Setting ExternalReference from calculated four points \| Example 25 - Rotating a reference around in a circle \| Example 26 - Grabbing an image from an MOXA Video IP Server \| Example 27 - Toolbox Switch \| Example 28 - Color Matcher Iteration \| Example 29 - Audio Notification \| Example 30 - Windows MessageBox \| Example 31 - Client to tcp Socket Server \| Example 32 - Read / Write External Data from / to file \| Example 33 - Changing a tool's ROI \| Example 34 - Histogram Equalization \| Example 35 - Robust Adam 6060 scripts \| Example 36 - Bubblesort \| Example 37 - Element Statistics \| Example 38 - Saving 3D Image \| Example 39 - Disabling Zoom in Image Windows \| Example 40 - Filtering timeseries \| Example 41 - Scorpion Watchdog keep system running \| Example 42 - Binary Search \| Example 43 - Creating an ordered pointcloud \| Example 44 - UDP Socket Communication

Example 10 - Image Averaging

This example is provided to show how to do image averaging using python and the arr module.

#------------------------------------------------------
# An example that is part of a PythonScript tool
#------------------------------------------------------

import arr
global image # contains the averaged image data
global counter # counter is set to zero in the Central Start Script

# increment image counter
counter += 1

# read 'Intensity' image data
img = GetImageMatr('Intensity')

if counter == 1:
image=img # initial value
else:
# --------------------------------------------------
# an exponential image average is calculated
#
#      image = image * 10/11 + img * 1/11
#
# --------------------------------------------------
image=arr.toUint8(arr.toInt(image)*(10,11)+arr.toInt(img)*(1,11)) # note special fraction multiplication syntax

if counter > 2:
# the Mean Image is set
SetImageMatr('Mean',image)
# ------------------------------------------------------------------------------------------
# image substraction
#    convert images to float - the rangeToUnit8 function
#    scales and handles image overflow to an 8 bit image with values from 0 to 255
#--------------------------------------------------------------------------------------------
image1 = arr.toFloat(image)-arr.toFloat(img)
img = image1.rangeToUint8(-128,128)
# set Subtract image
SetImageMatr('Subtract',img)