Ask Your Question

Revision history [back]

click to hide/show revision 1
initial version

!!! Sub-pixel estimation !!! match template

Hello guys,

I am trying to make particle image velocimetry using OpenCV and I have a few questions. Does Matchtemplate module take care of subpixel estimation? I have two images filled with particles and the second image is with particles translated by a small distance dx. I cannot always say that this movement is exactly in an integer value of pixels. so the particle maybe split in two pixels.

When I use Match template to find the center of the rectangle, is it considering the sub-pixels too? It is very important in my case for accuracy.

Arun

click to hide/show revision 2
retagged

updated 2017-08-29 04:08:21 -0500

berak gravatar image

!!! Sub-pixel estimation !!! match template

Hello guys,

I am trying to make particle image velocimetry using OpenCV and I have a few questions. Does Matchtemplate module take care of subpixel estimation? I have two images filled with particles and the second image is with particles translated by a small distance dx. I cannot always say that this movement is exactly in an integer value of pixels. so the particle maybe split in two pixels.

When I use Match template to find the center of the rectangle, is it considering the sub-pixels too? It is very important in my case for accuracy.

Arun

click to hide/show revision 3
None

updated 2017-08-29 04:08:54 -0500

berak gravatar image

!!! Sub-pixel estimation !!! match template

Hello guys,

I am trying to make particle image velocimetry using OpenCV and I have a few questions. Does Matchtemplate module take care of subpixel estimation? I have two images filled with particles and the second image is with particles translated by a small distance dx. I cannot always say that this movement is exactly in an integer value of pixels. so the particle maybe split in two pixels.

When I use Match template to find the center of the rectangle, is it considering the sub-pixels too? It is very important in my case for accuracy.

Arun