Benchmark Sirius against other open source solution

[savmickael]

Compare to gdal, opencv, otb, ... and provide a small page with the results

[dumasl]

We should do that carefully without never forgetting that Sirius will only be much faster then spatial solution when the filter support is large.
We can compare to opencv or gdal bicubic or bilinear filers by giving Sirius the same filters but then we should not expect to lesser execution time.
Sirius could be use with 51x51 filter size just like for some pléiades scenarios and then there should be a huge difference. But neither OpenCV nor GDAL allows us to use such filters...

So just saying we need to keep in mind that if Sirius can compete with OpenCV and Co. for bicubic filters then this is already great performance and I would like to see how time consumption varies with filter number of coefficients.
I'm thinking gdal and OpenCV or OTB could provide linear time consumption with number of filter coeff. Maybe Sirius does lot better than that.