How to apply median filter to whole video??

i want to detect foreground from video.i will first apply median filter than after i will subtract frame from reference frame..

Answer 1

[Image Analyst]

You can do it one frame at a time. A demo is attached. Feel free to adapt it.

[Rutvi Modi]

sir i already converted video in images.but i want to take 1st pixel of 1st image and likewise 1st pixel in every image and then apply median filter to generate reference image 1st pixel but how to apply it?

Answer 2

[Dima Lisin]

If you have the Computer Vision System Toolbox, try vision.ForegroundDetector. It models the background using a mixture of Gaussians, which is better than subtracting the median.