Live video and analysis loop

[githubdoe]

I have a version of DFTFringe that can use USB cameras or any URL streaming link to show a live video feed and then after you analyze one video setting the outline and blue circle you can have it analysis capturing from that source as fast as it can. For my machine that is about 3 to 4 seconds for a 2000x 2000 image.

I would like to share it with you guys to play with. It needs some polish and I would like to add a live display of average.

I'm working on a video to put on youtube to show you. That will take a little time to edit it.

I'm sorry that it is not yet a branch. It was based on my version of what I think the master was before the latest round of changes. I will make a branch of it called liveview. I have once again forgotten what how to do that to the remote github. I think I know how to do it on my local archive.

Anyway any interest?

[gr5]

Yes. Interested. Jaco does 256X256 pixels after the user outlines where the igram is. You can be far off on the outline if all you are doing is looking at the fourier transform.

[githubdoe]

Here is the video. https://youtu.be/dIbgcvodD_4
My DFT does not need the mirror outlined but you can do that on the live view and it will be more efficient. There are options to select several DFT sizes. You can outline the live view mirror by clicking the left side and dragging to the other side. In this case it does not have to be perfect but just include the mirror.

[githubdoe]

After using it a bit. It is a bit clunky with a slow UI when analyzing. There are times when I want to take many igrams and it is useful then. Trying to adjust the tilt when it is running is next to impossible at least for this mirror which has a very narrow range where I get good analysis.

I find I the live view of the igram a bit harder to use than my full screen web page provided by skysolve. It is hard to see when the fringes start to appear instead of just a grey disk.

[githubdoe]

Well it is clunky with wifi transfer of 2000x2000 images but at 640x480. It is very good. 640x480 is actually not too bad at the moment because my fringes for a sphere are never too small.

[githubdoe]

Here is the new view that shows the igram or DFT on the left and the average surface on the right.

[Lucassifoni]

Very interesting, this is what I meant to do in my fork and companion app. From what I understood it was based on your network camera ? Could we maybe add support shelling out to gphoto2 which allows to drive a lot of reflex cameras and gives a jpeg stream ?
I would love to work on that

[githubdoe]

It is based on any streaming device and/or USB video streamers. My device creates a web server and a video stream. It uses OpenCV to capture video frames from any streaming device. So if gphoto2 can talk to OpenCV then it will work with it.