Rolling ball background subtraction algorithm for OpenCV

Question

Is there an OpenCV (android) implementation of "rolling ball" background subtraction algorithm found in ImageJ: Process->Subtract Background?

OpenCV has a BackgroundSubtractorMOG class, but it is used for video streams not single, independent images.

This is an example of what this method does: https://i.sstatic.net/mXSLb.jpg

Here is a documentation of the process: http://imagejdocu.tudor.lu/doku.php?id=gui:process:subtract_background

Answer 1

There's no implementation in the OpenCV C libraries that I know of and the Android JNI wrappers are just that - wrappers around the main libraries.

Having said that the source code for the ImageJ implementation is available online here and so you should be able to incorporate this directly into your Android image processing pipeline.

There is some discussion about the relative merits of rolling ball vs. e.g. using a disk structuring element (which is available in OpenCV) here.

If you absolutely require Rolling Ball and OpenCV then unfortunately it's not available 'out of the box'.