hi Please i need your help about the OpenMV distance between and Object to Camera, how can i programm it ? distance in OpenCV are not similar way to do it with OpenMV please can you help me about this . My project have to be done this week please .(method to programm how: to calculate distance between the Apriltag to Camera "OpenMV camera")thks in advance
@@OpenMVLLC ... In your video you show how to get rotation value with object Apriltag. but I want to know , how to get value rotation for another object. example I need to know rotation/ orientation of book or ID Card. does OpenMv has library for it? this video as references th-cam.com/video/TqVg7K0PpBw/w-d-xo.html Thank you.
We actually have the full 3D pose available. See here: github.com/openmv/openmv/blob/master/src/omv/img/apriltag.c#L12614 However, only the Z rotation is useful without attaching real measured units to the camera focal length and pixel size, etc. If you have some ideas on how to expose this information in a useful manner and what can be done with it then please start a thread on our forums about what you'd like to see and I'll make it happen. I haven't done any AR so I don't know quite what to do with the information.
AprilTags will be available for the M7 only. It doesnt fit in the flash image of the M4. That said, you can hack the firmware if you like to get it running on the M4. The code has been posted to our github.
if anyone can help i will be greatfull with python Programm am not so good , need help really( disatnce between Camera and Apriltag(Object)"Qr code") how to calculate it in OpenMV .Thks
We output the 6 dof info per tag. so, 3d translation and rotation. You can use this info to get shear, normals, etc. Internally we have acess to the 3x3 homography matrix so if you want to hack the C code you can get more info. But, I think the 6 dof is everything you need.
hi Please i need your help about the OpenMV distance between and Object to Camera, how can i programm it ? distance in OpenCV are not similar way to do it with OpenMV please can you help me about this . My project have to be done this week please .(method to programm how: to calculate distance between the Apriltag to Camera "OpenMV camera")thks in advance
Nice Video.... in your video you mention "tag rotation". How to get rotation value for object detection?
thank you.
Syafrijal Agus Pleasesee the API
@@OpenMVLLC ...
In your video you show how to get rotation value with object Apriltag.
but I want to know , how to get value rotation for another object. example I need to know rotation/ orientation of book or ID Card.
does OpenMv has library for it?
this video as references
th-cam.com/video/TqVg7K0PpBw/w-d-xo.html
Thank you.
@@Mszanaika Please ask questions on our forums. Not in the You Tube comments.
Is there a way to create and track very small AprilTags - say - 10mmx10mm tags which are viewed from 3 to 4 feet away with the OpenMV cam by chance?
Yes, the OpenMV Cam H7 Plus has no resolution limit so you can track smaller tags. The frame rate is slower however at higher resolutions.
Greak work!! Could you please mention as to what the maximum (6 dof pose) output rate is ?
It's about 8 to 10 FPS at 160x120. The number of tags in the image doesn't matter. The speed is limited solely but the upfront quad segmentation cost.
OpenMV, LLC Thank you for the info.
Super cool!!, Is there a way to add some more processing power to the OpenMV Cam H7
No, it's a microcontroller. We will continue to release faster versions as microcontroller tech improves.
How accurate is the 3D Pose?
Depends on how close the tag is and how many pixels of it are able to be scene.
is it possible to find out where the tag in the picture is?
Yes, that's what the code is doing.
@@OpenMVLLC I feel kinda stupid right now.
very cool indeed. LOve the 2D rotation but how do we extract a local 3D orientation - for AR use ?
We actually have the full 3D pose available. See here: github.com/openmv/openmv/blob/master/src/omv/img/apriltag.c#L12614
However, only the Z rotation is useful without attaching real measured units to the camera focal length and pixel size, etc. If you have some ideas on how to expose this information in a useful manner and what can be done with it then please start a thread on our forums about what you'd like to see and I'll make it happen. I haven't done any AR so I don't know quite what to do with the information.
Hi, full 3D pose information will be available in the AprilTags code.
It's not hard to find, but this is the updated location: github.com/openmv/openmv/blob/master/src/omv/imlib/apriltag.c#L12614
Are the firmware and IDE with April Tag available yet ?
I don't see any AprilCode related function and I re downloaded everything..
Thanks :)
AprilTags will be available for the M7 only. It doesnt fit in the flash image of the M4. That said, you can hack the firmware if you like to get it running on the M4. The code has been posted to our github.
if anyone can help i will be greatfull with python Programm am not so good , need help really( disatnce between Camera and Apriltag(Object)"Qr code") how to calculate it in OpenMV .Thks
You just need to read the z_translation() attribute and then multiply it by a constant (that you must determine) which gives you the distance.
Wow! Where can I find the code from the video?
It ships with every open MV cam as a demo.
Does the code report the shear? Could it report normals?
We output the 6 dof info per tag. so, 3d translation and rotation. You can use this info to get shear, normals, etc. Internally we have acess to the 3x3 homography matrix so if you want to hack the C code you can get more info. But, I think the 6 dof is everything you need.
Indeed, and more. Great work!
You're making cameras, but can't hold the phone horizontally? :-)
Hard to hit the record button with one hand. :)
Seriously, though, this is pretty spiffy!