» VL: OpenCV is in da house!
This site relies heavily on Javascript. You should enable it if you want the full experience. Learn more.

VL: OpenCV is in da house!

computervisionados!

we're starting to collect the fruits of our hard efforts of making it easy to use thirdparty libraries. please give a warm welcome to VL.OpenCV

What the?

remember the amazing ImagePack initiated by @elliotwoods years ago? VL.OpenCV is essentially the same, only for vl: a collection of nodes for computer-vision tasks based on the industry standard library OpenCV.

OpenCV is a vast library with an endless number of interesting features. elliot back in the days did a great job in hand-picking some of the most interesting ones and wrapping them into easy to use nodes for evvvveryone.

meanwhile OpenCV has progressed and so we thought we'd give it a try and make it accessible for everyone in vl. watch this first episode of vvvvTv where ravazquez who has been working on this for the past 2.5 months, explains how you can use the prerelease package today.

Status

if we haven't missed anything, most of the functionality you know from the ImagePack should already be available, except some special video input devices, StructuredLight and FeatureDetection stuff but on the other hand already much more:

so we have:

  • sources: ImageFile, VideoFile, VideoIn (Directshow)
  • sinks: ImageFile, VideoFile
  • filters: Blur, EdgeDetection, Average, FrameDifference...
  • different background substraction options
  • optical flow
  • camera/projector calibration
  • trackers: contours, face recognizer, houghlines, object detection (via haarcascades), different 2d tracker options
  • ar marker tracking and pose estimation
  • utils: Info, CountNonZero, FindNonZero, Resize, Crop, Insert, Split, Merge, Delaunay, Voronoi,...

and most of the nodes and pins come with documentation in the tooltips!

Threading

as opposed to the ImagePack, this library is completely free of the complexities of threading. instead a user can use the threading regions of vl to define their own threading. while this indeed puts a bit more effort on the user we hope that the flexibility in dealing with their own threading outweighs the cons of this.

Next

the library is open for everyone to contribute. since it is mostly done in pure vl, with hardly any c# written, it is quite accessible for everyone to extend. so please do so and best join us in the chat to discuss matters when they arise.

joreg, Thursday, Mar 29th 2018 Digg | Tweet | Delicious 7 comments  
m9dfukc 29/03/2018 - 17:33

Haha, vvvvtv hilarious! Great to hear that openCv is now working in vl!

cvTester 29/03/2018 - 18:48

Great news!
Thank you so much.

metrowave 29/03/2018 - 23:16

Thanks guys, love the OpenCV stuff and vvvvTV is a cool idea!

ggml 30/03/2018 - 05:36

how does it look for dedicated videoins ? are they still required for optimal performance ?

joreg 30/03/2018 - 09:17

glad you like it...

@ggml not sure if dedicated devices have to do anything with performance necessarily, more with features not supported by directshow. so here is one eg https://github.com/vvvv/VL.Devices.uEye others should be as simple to do.

fleg 30/03/2018 - 11:24

where can i hear the full version of the intro jingle?

tonfilm 30/03/2018 - 16:21

@fleg download an old beta with the infamous crack.exe and start it ;)

  • 1

anonymous user login

Shoutbox

~13h ago

tekcor: VVVV.js workshop chanceled, unfortunately not enough people. Thanks to everyone who wanted to come and sorry!

~19h ago

neuston: @joreg Thank you very much!

~1d ago

joreg: @neuston: please check the country list again!

~2d ago

xd_nitro: no users in all of Wales!

~2d ago

microdee: it's like telling a west-Ukrainian that they're Russians...

~2d ago

microdee: @tonfilm: Telling a person from Hong Kong that they're Chinese is a bigger insult than calling their mom names ;)

~2d ago

tonfilm: Patch your own #mainloop with microsecond precision in #reactive #dotNET style. #rxNET #rx #gamedev #vvvv #VL vl-patch-your-own-mainloops

~2d ago

neuston: Sad. It hurts.

~2d ago

joreg: well, they would even have to choose "united" kingdom..