OpenCV-remap-function

A tutorial on the use of OpenCV remap function

The code of this repository demonstrates the use of the remap function. It creates a waving flag effect by applying the remap function on the axes of an image.

The code is explained here

Update:

I have added python versions of the same code. Here is what they are doing

ripple_effect.py

Stay away from this one! This is just to indicate how slow matrix operations can be without the use of numpy

ripple_effect_with_numpy.py

This one uses numpy operations for creating the mapping arrays with the for loops and it is really fast

ripple_effect_with_numpy_with_convert_maps.py

Like the previous one but uses fixed point representation for the mapping arrays. This makes remap faster

I have timed and compared all the operations above and details are provided [here]