I used PIVlab to analyse soil deformations of a laboratory model (Bearing Capacity), but I'm getting some velocity vectors in a place I'm not expecting that.Is there any possible method to remove them manually. I tried to remove bad vectors, however they are placed randomly and I can only select vectors which fit the selection rectangle. I'm sure that there should be no soil deformation/movement in that region but I think they are due to change in lighting conditions.
I hope I understand this correctly: You find movement in an area of your picture that shouldnt have movement.
Two possibilities that I see:
- either mask areas that are not interesting (i.e. where you dont expect movement) BEFORE the PIV analysis. Hit "Analysis options --> Exclusions". Draw your mask. Masks are polygonal.
- you can select the vectors that should be extracted and used in your evaluation AFTER the PIV analysis. Hit "Extractions --> parameters from area". Choose the parameter you need to extract. Then draw your area from which you want to extract. This again is a polygon.
These methods dont work, however, if your (un)interesting area moves throughout your take. I think for you the first method should do it. The masked area then contains small red Xes instead of vectors. Also, it's less effort for the processor.