Why all elements in opencv plugin of gstreamer are not available?

[jeyp4]

As per  gstreameropencv plugin webpage
<https://gstreamer.freedesktop.org/documentation/opencv/index.html?gi-language=c>  
many elements should be available.

But I can see limited elements in my gstreamer package.
<http://gstreamer-devel.966125.n4.nabble.com/file/t379085/opencvGstreamer.jpg> 
How can I make available rest of the elements Such as cameracalibrate,
cameraundistort, dewarp?



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