Is it possible to change color for the plot function in opticalFlow class?

3 visualizaciones (últimos 30 días)
The plot function in opticalFlow class ( see here ) has three name-value pair arguments. I assumed other regular plot arguments would work too but obviously they don't. I tried to use 'color' unsuccessfully.
I plan to superimpose the plots on images and the current blue color is hardly visible... So my question is: is there any way to change the color of this plot?

Respuesta aceptada

Anand
Anand el 2 de Jun. de 2016
Unfortunately, this can't be done directly. You need to find a handle to the underlying quiver plot and modify it. Here's some code to help you:
% Compute and plot optic flow
opflow = opticalFlow(randn(100,100),randn(100,100));
plot(opflow,'DecimationFactor',[10 10],'ScaleFactor',10);
% Find quiver handle
q = findobj(gca,'type','Quiver');
% Change color to red
q.Color = 'r';
  1 comentario
hekimgil
hekimgil el 8 de Ag. de 2016
Thank you Anand. It did work but it slowed things much. Still, this seems to be the only way...

Iniciar sesión para comentar.

Más respuestas (1)

Oskar Wilhelmsson
Oskar Wilhelmsson el 24 de Mzo. de 2018
I ran into a similar problem. Using "clf" in the beginning of the video loop will make sure the color is always the same, which is what I think you actually want.

Categorías

Más información sobre Tracking and Motion Estimation en Help Center y File Exchange.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by