Ivan Nepomnyashchikh nepomnyi
nepomnyi
/ customDeen.py
Last active
December 15, 2022 19:06
The custom implementation of the PIV image preprocessing algorithm after N. Deen et al., "On image preprocessing for PIV of single- and two-phase flows over reflecting objects", Exp. Fluids, 49(2):525-530, 2010.
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| import cv2 | |
| import numpy as np | |
| def customDeen(frame0, | |
| frame1, | |
| blockOne, | |
| algorithmType = 'basic', | |
| minMaxKernel = (15,15), | |
| minMaxLowLimit = 10, | |
| cliplimit = 2.0, |
nepomnyi
/ MinMaxForPIV.py
Last active
December 14, 2022 22:53
A python min-max filter implementation after Adrain & Westerweel, "Particle image velocimetry", 2011, p.250.
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| import cv2 | |
| import numpy as np | |
| def minMaxFilter(img, filterSize, minContrast): | |
| """ | |
| After R.Adrian, J.Westerweel, "Particle image velocimetry", Cambridge | |
| university press, 2011. See ch.6.1.2, p.248-250. | |
| Parameters: img (ndarray) - image to be filtered | |
| filterSize (ndarray) - a 1x2 numpy array of the filter height | |
| and width correspondingly |