search

Shrediquette / PIVlab

Particle Image Velocimetry for Matlab, official repository
https://shrediquette.github.io/PIVlab/
MIT License
140 stars 34 forks source link

weird value calxy, calu, calv #102

Closed mxardre closed 12 months ago

mxardre commented 1 year ago

Hello, I am analysing images with a width of 512px which corresponds to 2.5mm. I do the calibration in the GUI, process the data, and save the session. When I import the .m of the session in matlab I got a calxy value of 6.8359e-06. I don't see where does it comme from. I would expect either a value of 2.5/512 = 0.0049 or 2.5/15=0.1667.

If I do the math for calu and calv (time between frame given in the GUI 300s) I got 2.2786e-08. Which alse doesn't match expected calxy values. (but are consistent with the one I import from the .m though)

Anyone can enlighten these puzzling values?

All the best

Shrediquette commented 12 months ago

Can you please check this issue again, I updated something in displaying the calibration values: https://drive.google.com/file/d/12VyVKYUL3M-f26bRlJJiTVpngYA7cYSB/view?usp=drive_link

Shrediquette commented 12 months ago

...and please add further discussion of the beta version here:

103