I aim to start opencv little by little but first I need to decide which API of OpenCV is more useful. I predict that Python implementation is shorter but running time will be more dense and slow compared to the native C++ implementations. Is there any know can comment about performance and coding differences between these two perspectives?
I don't know about OpenCV specifically, but I can say something general about this topic. In general, pure C++ code is faster than pure Python code. In your case, however, you would be calling the same functions from either C++ or Python. Now, in this case the question is if your major runtime is within the OpenCV code. This is probably the case. It is quite popular to use Python for control flow and to write the kernels in C++ or Fortran. This means, that most probably there is no problem with using Python. If, however, you will be coding some functions that directly operate on the data on your own, then C++ would be the better choice for higher performance.
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