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#### Moving object detection with a moving camera

```Hi everyone,

I need some help with my university project. It’s about dynamic object detection with a moving camera. I've installed a camera to a potentiometer. My inputs are thus the angular velocity of the camera and the accompanying picture.
My idea was with the Computer Vision Toolbox "optical flow" to determine the speed and compare it with my camera speed, so to find out what objects have different speed as the camera itself. The results should be the dynamic objects.
My question is what kind of speed (unit) is from the optical flow? I cannot find anything in the Mathwork help. My camera speed I get in pixels per sample time.

This approach is feasible at all or completely in wrong direction?
Can anyone help me or give a hint on how I can filter out moving objects from a NOT stationary image? So please no hint for background estimation as they were in the Matlab demos.
The perfect solution would be a black screen and only visible faster/slower moving objects as the camera speed.

Thanks a lot
Bastian
```
 0
brichter (1)
8/22/2011 7:33:09 PM
comp.soft-sys.matlab 211266 articles. 22 followers. lunamoonmoon (257) is leader.

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```"Bastian" wrote in message <j2uatk\$sfs\$1@newscl01ah.mathworks.com>...
> Hi everyone,
>
> I need some help with my university project. It’s about dynamic object detection with a moving camera. I've installed a camera to a potentiometer. My inputs are thus the angular velocity of the camera and the accompanying picture.
> My idea was with the Computer Vision Toolbox "optical flow" to determine the speed and compare it with my camera speed, so to find out what objects have different speed as the camera itself. The results should be the dynamic objects.
> My question is what kind of speed (unit) is from the optical flow? I cannot find anything in the Mathwork help. My camera speed I get in pixels per sample time.
>
> This approach is feasible at all or completely in wrong direction?
> Can anyone help me or give a hint on how I can filter out moving objects from a NOT stationary image? So please no hint for background estimation as they were in the Matlab demos.
> The perfect solution would be a black screen and only visible faster/slower moving objects as the camera speed.
>
> Thanks a lot
> Bastian
-----------------------------------------------------
Bastian
I would imagine the units are pixels - how could they be anything else (unless you passed in a spatial calibration factor)?

Why don't you want any kind of a background estimate?  I think that would be more straightforward than optical flow.

Or maybe try better models like Gaussian Mixture models or this:
http://www.mee.tcd.ie/~sigmedia/Research/RigRemoval
ImageAnalyst
```
 0
imageanalyst (7621)
8/23/2011 3:58:23 PM

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MIDAS - Intrusion Detection for Macs
We had difficulty finding a lightweight, scalable solution that would help us identify a broad range of potential indicators of compromise on ...

faroo_p2p: FAROO Search Page now optimized for mobile phones and tablets (auto detection) http://t.co/NkoQqwKc ...
faroo_p2p: FAROO Search Page now optimized for mobile phones and tablets (auto detection) http://t.

Paris terrorists used burner phones, not encryption, to evade detection
(credit: Aaron Gustafson ) New details of the Paris attacks carried out last November reveal that it was the consistent use of prepaid burner ...

Google gets patent for bus detection on autonomous vehicles
Filed under: Government/Legal , Technology , Autonomous Google was granted a patent for bus detection on autonomous vehicles, which comes just ...

Endpoint specific malware renders signature detection useless
... 2014 average of 85,000 a day. This shows cybercriminals are relying less on the same list of IPs, and are expanding to new ones to avoid detection. ...