前景提取 [英] Foreground Extraction

问题描述

我正在进行一些跟踪某人的工作，我正在使用此）。

I am doing some work regarding tracking a person, I am using this dataset. I am trying right now to extract foreground using background subtraction method i.e. Mean Filter

My background is like

and if I try to subtract my current frame like this

so after subtraction I am getting image like this

and after thresholding of 0.15 or 38

I get this mask

So if you notice this mask, it is splitting this foreground in to two pieces because of occlusion of person and chair. I dont know how to solve this problem. Any suggestions?

解决方案

It's not a perfect solution, but maybe it will be enough for you - on mask image find all contours, join them(usually contours are represented as vectors of points so put all contours into one vector) and then find the convex hull of connected contour (if you are using opencv - use convexHull function http://docs.opencv.org/doc/tutorials/imgproc/shapedescriptors/hull/hull.html).

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