PIVlab

Hello Nouman, The problem is very likely to be in the BOS geometry: Since BOS requires the camera to

I tried with [u, v] = get_highpassed_vectors(handles, u, v); but it threw an error. So I rewrote this

Dear Dr. William, I have modified the source codeline from ' if get(handles.highp_vectors, '

Are you using video files? Bryant schrieb am Mittwoch, 11. März 2026 um 14:02:15 UTC+1: Incorrect use

Hi, the command window will tell you the problem. Sharadhi N Raj schrieb am Mittwoch, 11. März 2026

Hi, the reason for this crash will be displayed in the command window. You need to copy and paste the

Hello, Thanks for the response. It works now! On Thursday, February 26, 2026 at 4:53:15 PM UTC+2

Thanks for your suggestion. When I think about the sentence "This is not a PIVlab related issue

Hi William, Version 3.0 had been working for me for years which is why I hadn't updated, but I

Thank you! Em quinta-feira, 11 de dezembro de 2025 às 03:31:44 UTC-3, William escreveu: Dear José

Hi, this is not possible yet. But it should be easy to do with the help of chatgpt. The relevant code

Hi, this will average all velocities in that area over time and over area, and then give you the mean

I tested something similar with 400 images and 1500 x 1000 px resolution. I got a valid result and

Hello William and Hal, Thank you for initiating this conversation. I am relatively new to using

Dear William, thank you so much for your help. This helped me so much! The section in the book was

Hi, these are just the two independent available independent options to calculate circulation from a

Dear Fabrice, ok, but I don't see a typical usecase for this. I think you could easily do this in

Dear Briana, PIVlab can only control hardware from OPTOLUTION. But you could just use your laser and

I just wanted to add: With your proposed more coarse grid the two methods look much more similar,

Afaik, this is not how BOS velocity analysis works. When I understand correctly, you would have to

Dear Gao, this is always pretty time-consuming as I have to re-record everything. I will do it in the

Dear Elias, yes this file seems to be missing. You can download it from GitHub and add it to the

Good day Dr. I am sorry for the inconvenience. We actually have been chatting before. But since i

Hi Dr.William, I hope you are doing well . is the pivlab consider the constant time frame between the

Dear Dr. William, I'm using PIVlab for a BOS (background-oriented schlieren) analysis with one

Yes it can, although subpixel displacements of interest may turn out to be of similar magnitude to

PIVlab uses Matlab function corr2 to calculate the correlation between input subimage a an B (in the

Dear Stefano, thanks, sounds logical and I have changed the code accordingly: https://github.com/

Dear Giorgio, yes please send me more information via email (https://optolution.com/de/unternehmen/

Hi, there are A LOT of things involved to plot the graphs in PIVlab, here is the main function