[ANSWERED] Kinect 1 and izadora 3: ghost and osc, how to make it work?

bonemap

Hi,

There is a Isadora native plugin being heavily beta tested for release. It is a depth image and skeleton decoder package. I think that much is public knowledge.

In terms of a comparison with NiMate the Isadora solution will not have skeleton data recording, spatial trigger point calibration and many other features that are available with NiMate.

However, the compatibility with a range of sensor types and models looks to be superior to NiMate - so dig out those old Kinect v1 sensors. Because of the flexibility of Isadora and the host of other functionality available, I suspect there will be a few user generated solutions that will extend the package being prepared for release by @mark.

I am looking forward to using this Orbbec Astra mini, which has been confirmed to work with Isadora, it is a beautiful dust and waterproof sensor when placed inside a Orbbec Duripod casing https://orbbec3d.com/astra-min...

Best wishes

Russell

dbini

The OpenNI plugins that will soon be made available to all Izzy3 users are comparable to NIMate in many ways. As Russell says, you can't record skeleton data, but its really easy to output xyz data for the major skeleton points (up to 6 users simultaneously). In terms of the video output, currently there is nothing that works like the Ghost output of NIMate, but there is depth image, colorised bodies and a cool skeleton vector. The main issue is that the Izzy stuff is not currently compatible with Kinect 2, but if you're using the granny Kinect then I'm sure you'll appreciate being able to do depth tracking within Isadora.

Bennnid

@bonemap Dear Russel thanks for your clarifying reply; -)

if a comparison post between Kinect and Orbecc exists could you send me a link? really interested in knowing better the different capacity of various sensors (good to know about environment protection though ! ).
When you tell about data recording is it different with getting osc datas from various skeleton part as john said? (not clear for me the recording/output osc difference)?

I need to start the project fast and don't wanna buy the licence to get ni mate osc... do you know if former tutorial with processing still works on Isa3?

many thanks for you lights !

Woland

@bennnid said:

do you know if former tutorial with processing still works on Isa3

It does not

Bennnid

@woland thanks i was guessing that cos all webpages are down...

too bad... thanks guys !

Woland

@bonemap said:

the Isadora solution will not have skeleton data recording

Easily solved with a pair of Data Array actors

Woland

@bonemap said:

spatial trigger point calibration

Comparators + fuzzy logic and/or Eyes/Eyes++ sort this out, if I understand correctly

Woland

@bennnid said:

so shall i go back to NI mate and Syphon or wait a bit more? did i miss the pandora box in the existing plugs?

If you open a support ticket and I can add you to the beta program to try out the plugins.

Bennnid

done ! thanks a lot!

Bennnid

@woland i was thinking the same...-)

Woland

@dbini said:

the Izzy stuff is not currently compatible with Kinect 2

Yes, the Kinect 2 provides much more complex data than the other cameras so Mark is planning on handling it in its own special plugin.

Bennnid

@dbini said: output xyz data for the major skeleton points (up to 6 users simultaneously).
that's amazing ! 6 simultaneous...damn !

"currently there is nothing that works like the Ghost output of NIMate, but there is depth image, colorised bodies and a cool skeleton vector. "

so with an alpha mask, a chroma key we can get a ghost or is it different?

Bennnid

Another question:
I 'd like for another install, to get tracking of persons from the top (from above a room for ex)... getting dots would be enough ( don't need full body recognition)... do you think this could be possible?

dbini

@bennnid

with a chroma key we can get something like the Color ID effect of NIMate (a bit better - there are some depth details in the body) but the blobby Ghost effect needs to be simulated with blurring and thresholding. Top down positioning should be the same as with NIMate - a little less stable than if used how the Kinect was designed to be used.

bonemap

@bennnid said:

really interested in knowing better the different capacity of various sensors

Hi

To answer your question, I do not know of a comparison that I can refer to you. One thing is that the low cost Xbox Kinect is no longer in production. Microsoft now offer the Kinect Azure which appears much more costly developed for the AI market. This, theoretically, opens the door for other manufacturers. I think the success of Isadora developing the depth image plugin also rests on the availability of low cost sensors. I have been particularly impressed by the Orbbec Astra Mini as it has a much smaller form factor than a Xbox Kinect or any other model of sensor - so this provides more versatility. Along with the casing that is dust and waterproof as mentioned before, it requires only power through the USB connection - no need for additional power supplies. This resonates for me as part of what I do is outdoor events. So the possibility of using a depth sensor while performers are in or near a lake (for example) appeals to me. One of the things I am currently testing is the operating cable length I can use with the sensor. So far I have managed a stable connection at 10 m using 2x powered usb3 cables. The Orbbec sensors don't work with NiMate at all so I am investing project development in Isadora. Thanks @mark for making this possible.

The NiMate software has a number of different modes of operation, skeleton tracking being just one of them. The Trigger and calibration options are quite sophisticated along with the ability to record the depth sensor image to an external data file that can be replayed back into NiMate. This is a key feature of NiMate - a depth image can be recorded and replayed or looped to generate tracking, trigger and skeleton data. It allows development of systems without needing a performer constantly in front of the sensor. So there is an economic imperative in this as a feature request in Isadora. I wish I could afford to pay a performer for many hours while I undertake fiddling, tinkering system development. Although, @Woland is possibly right suggesting that many of the advanced triggering modes and feature sets in NiMate can be emulated in Isadora, once the new Plugin is available, but I would say that emulating some aspects of what NiMate does will require advanced Isadora programming skills (such as depth image recording and playback through the plugin). Let’s hope Isadora's advanced users share some of the user actors they develop to extend the range of features possible from the depth image provided by the plugin! (my hands clasped in hope and anticipation).

Best wishes

Russell