Hi Harry, Harry van der Wolf wrote:
- The mail mentions that a "a small part of the SURF algorithm to estimate the orientation of the interest point" is still used. You mention that you hope to replace this in the future. Can you give a rough estimate or could this be a GSOC 2010 project?
Actually, I have already implemented another orientation estimation algorithm, which seems to work quite well.
- Build process: The build process is not very clean yet. I did some patching with regard to vigra-impex lib [3]. I don't know whether this works correctly on all linuxes, but it did for me on Ubuntu and OSX (off course). It's also possible to build against Hugins own internal vigraimpex. I could not deduct differences between the external (latest) vigraimpex and the internal hugin version. (Again a GSOC2010 project?)
For our purposes, there shouldn't be any differences between the official vigraimpex and the hugin internal vigraimpex, so using either one is fine. As it builds fine under linux now, I'd be happy to accept patches that make it easier to build, especially on windows.
- OpenSURF: I suppose you have seen the documentation around Opensurf long time ago, but in case you didn't (and for others) I provide some links to code [0] and notes [1]. It is GPL3 and I can't find patented parts.
I didn't know about that, but from what I see when reading their "Notes on the OpenSURF library", it is only a slight modification of the patented SURF algorithm, if any at all, and it would probably qualify as an reimplementation of SURF. A closer look at the source code is required.
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