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Beams needs a new maintainer #2
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I found your project while browsing on GitHub. I would love to help on this, but probably ought not to. I'm a software engineer and a bit of a laser measurement evangelist at Spiricon for the last ten years, and this would probably be seen as a conflict of interest... I personally value open source and always respect any competition. We very much appreciate that there are teams that can't afford a commercial profiler or simply require a limited feature set from our products. I really think its too bad you (or someone else) can't maintain this project to help those teams that have the time and expertise to use an open source solution. While looking into your project I found your companion website, and I was disappointed because I noticed you rather demonize Spiricon and Ultracal on your Beams website. Having an inside track on the topic, I believe your statement on your site is in error as we've never tried to hide what Ultracal is, but it made sense for the technique to be patented given fierce competition in the photonics industry. If you don't mind, since it is public information and a topic I openly discuss with our customers anyway, can I elaborate on Ultracal here? I think the following information is a valuable consideration no matter which beam profiler someone uses. All that Ultracal does is:
This technique provides a few distinct benefits over other techniques:
If you don't do this, the variation in electronic noise is added to the measurement, reducing its accuracy. If you use a flat clip level you will, more often than not, clip real laser signal from your measurement, as you aren't accurately considering the noise profile of the camera. ISO specification 11146-1 sec 5.2 and 11146-3 sec 3 specify that beam width must use a baseline correction method, which I think you recognize by including your own correction method in your features list.
I am meaning to look into what baseline correction method you've chosen to use and I'd love to talk to you if you have any interest. I realize you've long since moved onto other projects. |
@rleikis Thanks for your comments. Apologies that I haven't responded sooner. It is true, I don't pay this project much attention anymore and I would welcome if someone else could take it over. It's a pity because people were just starting to use it in other research groups at the time I left academic research (and thereby lost my easy access to all different sorts of cameras and lasers.) Thank you for elaborating on Ultracal. (Although, what you describe there is pretty much the same as what Beams already does; there must be more to Ultracal if it was patentable!) I think it's just fine that Spiricon holds a patent for it. However, I believed then and still believe now, that that makes it unsuitable for either peer-reviewed or publicly funded research, and I think Spiricon should be transparent about that. (I congratulate you insofar as your message is exactly the transparency I'm looking for, but where it was really needed was when one of the PIs in my lab bought a bunch of beam profilers from Spiricon, not realizing that they were proprietary!) I admit I was probably a bit overzealous in singling out Spiricon as it was the example closest to my heart at the time. I've reworded the website, thanks for bringing it to my attention. I would welcome any comments or suggestions you have on Beams, especially since I can't even remember the details of the baseline correction method by now! |
@ptomato Thanks for the reply, I really appreciate the fairness in your
landing page update. I'm looking forward to getting to look at your python
implementation and it seems really useful. I'll try to keep you posted.
Kind Regards,
Russell Leikis, KE7VFI
[email protected]
…On Mon, Feb 20, 2017 at 11:11 PM, P. F. Chimento ***@***.***> wrote:
@rleikis <https://github.com/rleikis> Thanks for your comments. Apologies
that I haven't responded sooner. It is true, I don't pay this project much
attention anymore and I would welcome if someone else could take it over.
It's a pity because people were just starting to use it in other research
groups at the time I left academic research (and thereby lost my easy
access to all different sorts of cameras and lasers.)
Thank you for elaborating on Ultracal. (Although, what you describe there
is pretty much the same as what Beams already does; there must be more to
Ultracal if it was patentable!) I think it's just fine that Spiricon holds
a patent for it. However, I believed then and still believe now, that that
makes it unsuitable for either peer-reviewed or publicly funded research,
and I think Spiricon should be transparent about that. (I congratulate you
insofar as your message is exactly the transparency I'm looking for, but
where it was really needed was when one of the PIs in my lab bought a bunch
of beam profilers from Spiricon, not realizing that they were proprietary!)
I admit I was probably a bit overzealous in singling out Spiricon as it
was the example closest to my heart at the time. I've reworded the website,
thanks for bringing it to my attention.
I would welcome any comments or suggestions you have on Beams, especially
since I can't even remember the details of the baseline correction method
by now!
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I don't work in a laser lab anymore, and so I don't have easy access to a laser on which I would test a beam profiler; at the same time the need for a good beam profiler has become less urgent. I haven't done a whole lot of work on Beams over the last year and I suspect someone else could do it better justice.
I would be happy to give any help needed to someone who wanted to take over maintainership of Beams.
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