Inquiry: How to expose more parameters in config.py

[Saijin-Naib]

What is the syntax for exposing more parameters in the OpenSFM config.py?

For instance, ORB has no tunable parameters listed, despite having a number of important parameters in the OpenCV documentation.

I would also like to follow suit and expand the tunable parameters for Akaze, SIFT, SURF, and the matchers, as well.

[YanNoun]

Hi @Saijin-Naib ,

Options from the config.yaml are propagated in the main features entry point through the config dictionary : https://github.com/mapillary/OpenSfM/blob/main/opensfm/features.py#L491. Just add the options to config.py and read them directly in the function.

Let me know if that answer your question,

Yann

[Saijin-Naib]

@YanNoun ,

I think so? It gives me a better understanding of where to look next, at least.

As I'm sure you know by now, I'm interested in expanding the flexibility of ORB and AKAZE feature descriptors within OpenSFM for application in OpenDroneMap (https://github.com/OpenDroneMap/ODM/issues/1370).

To that end, I want to expose all the options for them that OpenCV does so that they can be "first-class" like SIFT/SURF are.

Thank you for your assistance, as always.

[walter-morawa]

That sounds amazing! Let us know if you guys make progress on making AKAZE "first class". :)

[Saijin-Naib]

With me at the wheel, it's definitely an "if" situation rather than a "when" haha.

[walter-morawa]

Let me know how I can help. I know very little about CV and SFM, but I want to learn so I can contribute to OpenSfM.