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AR Camera for Video play jitter

January 15, 2014 - 5:47am #1

Hi

AR Camera for video play is jitter too much, Using unity 3.5 and vuforia 2.0.30 it works fine,

With latest Vuforia SDK, Video playback Plane not stick to image target, keep shaking(Jittering), Please resolve this issue

AR Camera for Video play jitter

January 16, 2014 - 9:30pm #12

Hi

 

Thanx for your reply,

wil do test one more time, if i get any problem, wil get back to you,..:)

 

AR Camera for Video play jitter

January 16, 2014 - 8:39am #11

So, here is the result of our tests:

when testing your DKShiva dataset on the old SDK 2.0.30, the behaviour observed is as follows:

  • when moving the camera slowly (slow motion around the target), we observed very little jitter (or no jitter)
  • when moving the camera with fast motion (e.g. fast and repeated left-right / up-down), we observed that sometimes tracking was lost

 

when testing a dataset based on the same DKShiv image target, on the latest SDK 2.8.7, the behaviour observed is as follows:

  • when moving the camera slowly (slow motion around the target), we observed very little jitter (or no jitter), same as in SDK 2.0
  • when moving the camera with fast motion (e.g. fast and repated left-right / up-down), we observed some small jitter, but tracking was never lost (or only lost for really fast motions)

 

So, the main difference we observed using your targets is that in 2.8 tracking is lost less easily than in 2.0, i.e. tracking in 2.8 appears to be much more robust; some jitter was observed during fast motions, but this seemed to be acceptable considering the high speed of motion (and considering that tracking was not lost, as opposed to 2.0, where the tracking was lost much mor easily)

 

So, we cannot reproduce / observe the issue here;

unless there is a specific way (e.g. type of motion, specific lighting conditions, others) to reproduce this.

In this case, I would really need to have a video where you show the 2 differnet behaviours side-by-side (SDK 2.0 vs 2.8), so that we can understand better how and when this issue can be reproduced.

 

AR Camera for Video play jitter

January 16, 2014 - 6:50am #10

Thanks, will try. 

Is the dkshiva_scaled.jpg the same version of the image used to generate the dataset ?

or is it a downscaled version ?

 

AR Camera for Video play jitter

January 16, 2014 - 4:45am #9

Hi 

 

Please  find QCAR data set for old version of Vuforia which works fine earlier, 

AttachmentSize
Package icon QCAR.zip97.43 KB
Image icon dkshiva_scaled.jpg31.38 KB

AR Camera for Video play jitter

January 16, 2014 - 2:54am #8

I've tried your targets, and I have noticed some jitter mainly on the Doctor.jpg image.

But I would need to also get the original Dataset for the 2.0 version (i.e. the one generated by you, if possible), as the current Target Manager produces datasets that are not compatible with 2.0.32

Could you PM me such dataset ?

AR Camera for Video play jitter

January 16, 2014 - 1:50am #7

Hi

 

Im using samsung note 8 and note 10 tablets for testing, 

In note 8 " less jitter"  and in note 10  " jitter is too much" , is that device problem or publish setting problem? or any bug with latest SDK

 

Thnx

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Image icon Bundle.png33.6 KB

AR Camera for Video play jitter

January 16, 2014 - 1:26am #6

Thanks. Let me give it a try.

AR Camera for Video play jitter

January 16, 2014 - 1:19am #5

Hi Alessandro

Thanx for your swift reply,  

 

PFA of image target, FYI

 

regards

fouzarsh

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Image icon Doctor.jpg102.91 KB
Image icon Alzu.png315.71 KB

AR Camera for Video play jitter

January 16, 2014 - 12:59am #4

Hi, by comparing the VideoPlayback samples, we have not observed any remarkable difference in jittering between the latest version and the previous ones.

Could you PM me your image targets, so that I can make a comparative test with those ?

 

AR Camera for Video play jitter

January 16, 2014 - 12:29am #3

Hi

Thanx for your reply,

PFA of both unity3.5  SDK 2.0.30 and 4.3 with latest SDK,  Vuforia target image rating 4-5 star, but still plane is not fix to target image.

 I tested with Vuforia sample unity package for video paly, that image(camera) also bit jittering.

 

waiting for your reply

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Image icon Unity3.5.png542.27 KB
Image icon Unity3.5_1.png705.59 KB
Image icon Unity4.3.png533.58 KB
Image icon Unity4.3_1.png408.21 KB

AR Camera for Video play jitter

January 15, 2014 - 6:05am #2

Hi,

could you provide videos that show the different behaviour on the 2 versions ?

 

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