Help in Explaining POSIT algorithm (3D maths)

  • Thread starter Anhar Miah
  • Start date
Hello Everyone,

This is my fisrt post! I have been suggested that this forum's members may be able to help me, this thread was orginially posted in another forum, they have re-directed me towards this community! :

{original post}

Hi guys,

I've been doing some background hobby project based on using a webcam to detect 4 IR LEDs their position is then tracked, using the POSIT algorithm it is possible to calculate the exact location and pose (translation and orientation) of the LEDs.

Anway here is the paper : [Broken]

it is Daniels DeMenthons classical "POSIT in 25 lines of code"

The maths is a bit too heavy for me, he inlcudes some codes, I was trying to convert this into VB, but that is only half the story,

what I would really like is a detailed numerical example, that I can actually see how it works (the algorithm) because I've tried to understand the mathemtical explantions in the paper but just got confused !

(1) A simple numerical example that explains the algorithm
(2) Possibly a VB6 translation (not really that important)

Thanks in advanced!

thanks guys!


that paper has mathematica code included, I'm wondering if anyone can "reverse" engineer the code to understand it?

Looking forward to replies

Anhar Hussain Miah
Last edited by a moderator:
Bump! anyone?

(why does this thread not appear directly, can only view it under my account?)


its now fine, thread appears correctly.
Link to pdf is 404
Last edited:
How much linear algebra do you know?
In theory I should know it well, in practice I haven't touched it in a couple of years! I'll try my best to follow along, if I get stuck I'll point out the bits I don't understand.


ps. going to sleep now, its 4 am in the uk!
re: eeek

ok, anything? anyone? I've seen people here solving harder maths problems than this, I was fairly hopeful that this board would be able to help, can someone please try.

Thanks guys,

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Hot Threads