PIVlab GUI version and batch-analysis code version yield different velocities

[Yicong Fu]

Hello!

When I tried the batch-analysis code from github: https://github.com/Shrediquette/PIVlab, I got slightly different velocity values than the GUI version. The flow structures still look correct and the values are not off by a lot. I think everything was set the same, and the video was the same too, so I expected to see the exact same values. I wonder if this is a version issue. The GUI I use is version 2.63, whereas I am not sure which version the batch-analysis is using. Could someone help out? Did anyone encounter similar problems? 

[William]

Hi, this most likely has something to do with the preprocessing settings: The automatic contrast stretch might work slightly differently in old versions. I think I fixed this in more recent versions, so you should upgrade (I always recommend to upgrade as the software becomes better and better.)