Tracking Software

[Yeasman]

Hello !

I am in search of a software that is able to read the on screen speed of a point assigned on a video. Is there such a thing ?

 

[emosun]

no , you just need to do simple math.

object tracking is possible but the computer doesn't know what the object is , or how big it is in the real world. The only thing the computer knows is the 2d shape it is and it's position in the frame.

if you don't want to do the math i would suggest a radar gun instead as anything video based will be less accurate.

[LogicalDrm]

There are apps that claim to be able to do that. I'm not sure how exactly as depth sensor on phones is far less sophisticated than pure laser. The depth sensor is already using some algorithm. But you can check accuracy yourself. Search for speed tracking apps.

[Yeasman]

22 hours ago, emosun said:

no , you just need to do simple math.

object tracking is possible but the computer doesn't know what the object is , or how big it is in the real world. The only thing the computer knows is the 2d shape it is and it's position in the frame.

if you don't want to do the math i would suggest a radar gun instead as anything video based will be less accurate.

yea sure, however if the speed is not constant the "simple math" method does not work 

 

[emosun]

1 hour ago, Yeasman said:

yea sure, however if the speed is not constant the "simple math" method does not work

Yes it does. 

 

If you know the exact size of the object and the size of an ajasant object, then every 1 second of footage you can measure the distance moved.

 

This will give you a speed reading that updates every second.

[Yeasman]

On 7/19/2018 at 2:52 AM, emosun said:

Yes it does. 

 

If you know the exact size of the object and the size of an ajasant object, then every 1 second of footage you can measure the distance moved.

 

This will give you a speed reading that updates every second.

What you do not understand, is that i need a precisice reading if the point is accelarating, you're method is wildly inaccurate

 

[emosun]

6 minutes ago, Yeasman said:

you're method is wildly inaccurate

 

On 7/17/2018 at 6:07 PM, emosun said:

i would suggest a radar gun instead as anything video based will be less accurate

congrats you've connected the dots

[Yeasman]

1 minute ago, emosun said:

 

congrats you've connected the dots

Care to explain what you mean by that ?

 

[LogicalDrm]

Camera sensors are made for saving rgb value they detect. As there's no depth sensor, anything moving towards or away from camera is seen as stationary, until their size on sensor changes. This change would need to be recognized as motion. Only way to do it is by calculating how far object was, how long it took it to get bigger etc. Proximity sensor would help, if your device have it with rear camera and if it has strong enough beam. In all, using camera on phone will get you reading. But its even further from true than phone GPS reading (which have accuracy of 1-3 m). 

 

If you need accurate readings for ie. science projects or legal reasons, then you get actual device made for the purpose. Radar gun uses (I had to check this from Wikipedia as I thought they have laser for it) Doppler effect and microwave. Microwave is send to object which sends echo back to gun. Internal software calculates how and how much wave length changes to determinate if target is moving away or towards and in what speed.

Edited July 24, 2018 by Crunchy Dragon

[Yeasman]

On 7/24/2018 at 7:35 PM, LoGiCalDrm said:

Camera sensors are made for saving rgb value they detect. As there's no depth sensor, anything moving towards or away from camera is seen as stationary, until their size on sensor changes. This change would need to be recognized as motion. Only way to do it is by calculating how far object was, how long it took it to get bigger etc. Proximity sensor would help, if your device have it with rear camera and if it has strong enough beam. In all, using camera on phone will get you reading. But its even further from true than phone GPS reading (which have accuracy of 1-3 m). 

 

If you need accurate readings for ie. science projects or legal reasons, then you get actual device made for the purpose. Radar gun uses (I had to check this from Wikipedia as I thought they have laser for it) Doppler effect and microwave. Microwave is send to object which sends echo back to gun. Internal software calculates how and how much wave length changes to determinate if target is moving away or towards and in what speed.

Thank you very much, i should hve specified that the obcect that i am lookin to track is just moving around a plane. Thanks nontheless lad.