   filter image or  matrix
  Hy.I have a matrix in openg that is get from the artoolkitplus and is a modelviewmatrix.The problem is that this matrix(rotation and translation) change a little for every frame.Is possible to eliminate these glitter that cause flickers  ?i must filter the image or directly the matrix?how?i can do it with opencv ?thanks.   
  What "glitter" are you talking about? Aliasing effects? Bicubic filtering will fix that right up. For best results, you should be downsampling.   ;  but there are some opensource implementation of this filter?Must be apply at the matrix or at the grabbed image?thanks.   ;  what mean downsampling?How i can do it?thanks   ;Quote:Original post by giugiowhat mean downsampling?How i can do it?thanksYour question isn't very clear (to me, at least).Are you saying that you're getting a transform from some outside source each update, and that these transforms differ slightly, causing the object to which they're applied to 'jiggle' a little bit? Is that the problem that you're trying to solve?   ;  yes,sorry for my english   ;  So I gather that ARToolKitPlus is some sort of 3-d camera/object tracking software, right? And you're working with the data from this library?I could be entirely wrong about this, but it sounds like this is the sort of problem one might encounter when cleaning up motion-capture data. As such, I imagine there are already existing solutions for this. However, not having done any work in this area myself, I couldn't tell you what those solutions are exactly.Meanwhile, I think some further clarification would be helpful. To elaborate on my previous question, are you talking about:1. A camera-object pair that should be stationary with respect to one another, but for which you're seeing 'jitter' in the transform data due to imperfections in the sampling system, or...2. Objects that are moving smoothly, but for which you're seeing 'swimming' or 'sparkling' effects in the rendered graphics?Note that for questions like these, it really helps to be very specific and to provide as much relevant detail as you can (including screenshots or videos if appropriate).   