In a cool wind in Sweden.

With a young friend in Bangalore

With an old friend in Bangalore

With new friends in Bangalore, at TIIEC
Teams working on an artificial finger

and on ultrasound obstacle-seeing shoes
Roaming the world

This is the web site of Tim Poston, and some of the people who do stuff with me, around the planet.  Some of the people are in companies, which own the stuff, so we won't be public here about that:  but that leaves things to talk about. 

I have been Chief Scientist at Forus since April 2013, and some of what I have been doing there will soon be ready to show off:  watch this space.

One public thing is the company Nordic River that I helped start a few years ago, whose TextFlow makes it a lot easier to work with input from multiple authors.  Instead of tracking changes, we adapted to documents the Smith-Waterman algorithm invented to compare DNA, and put it in a smooth interaction API.  Sadly, the company did not succeed..

Another collaboration is with Raghu Raghavan of Therataxis, founded in 2004: I've worked with Raghu for two decades now, starting with a Singapore group that became for a while the Centre for Information-enhanced Medicine (CIeMed).  Several of my patents are with him, and we are now working together on xelular deformable sets and steering ultrasound hotspots to push around drugs in the brain and oil under the ground.

The hotspot steering makes essential use of Catastrophe Theory, as does my work with Dhanik et al. on fast force feedback for buckling virtual objects:  When in the 1970s mathematicians were trying to convince engineers and scientists that Catastrophe Theory is useful, we didn't know enough of what they needed.  Now may be a good time to renew that struggle.  I find engineering students (in India) far readier to exploit the power of mathematical clarity than engineering professors.

A joy of India is the flood of high-flying students seeking projects for the skills and ideas they learn, rather than the grade myopia* I felt in UCLA.  (A finger points to the moon. The GPA looks at the finger.)  A large part of what I have done recently would have been impossible without them.  Interns are very welcome, either to work on medical image analysis — particularly, but not only, eye images — or on tensegrities, optimisation algorithms, etc.

Another beginning at CIeMed was a 'reach-in' approach to 3D interaction with computers and virtual reality:  Don't stick your head in and come out with a headache, put your hands in and get some work done.  One of the descendants of that development is the virtual sculpture system like the one I dreamed of at the start:  It has been fascinating to work with Anarkik3D on the geometrical code it needs.  They use a version built by Reachin Technologies, which like Volume Interactions grew from that work. (3D interaction is not an easy commercial niche, but maybe the new wave of consumer 3D will change things.)  I helped build a reach-in controller for MR image acquisition while I was at GE's research lab in Bangalore, and they still demo it, but GE has not yet started selling it with their scanners.

I have recently been surprised to find a way of looking at tensegrities that is different from the writings I have found, and suggests the possibilities of larger and more useful ones. I am following this up, and writing it up — no, webbing it up, with animations and videos and all — but here is a rather hand-waving and polemical start.

For a while recently I worked with the Singapore R&D arm of Animoto, with its 3D graphics and need for dynamic typography (filed a patent in that), but Animoto has withdrawn to its US base.

A student focus on grades above learning is generic in the US,
but not in all Indian colleges:

A project student from a place where I do not teach or grade, doing a lot that I could never do (hunting down parts, solving semi-documented APIs,…):   "Next week there are no lectures, because of tests, so I'll have more time for this."
Me:   "Except for the tests."
Student (dismissively):   "Well, yeah."
Grade-olaters, these are the students who in five or ten years will be eating your lunch.  They have just the right kind of ignorance.

A finger points to the moon. The GPA looks at the finger.

Pages here and there

Where I've been
Anarkik3D (external)
Nordic River (external)
Therataxis (external)
Xelular sets (1st look)
Tensegrities (1st look)
Ultrasound hotspots
Joy of Ignorance


My mail ID is just my name @ gmail.  I used to be on FaceBook… but gave up in disgust over privacy, poor navigation, and the endless need to relearn the changing interface.   TimeLine was the final straw.

I am also on LinkedIn.

Avec ses quatre dromadaires
Don Pedro d'Alfaroubeira
Courut le monde et l'admira.
II fit ce que je voudrais faire
Si j'avais quatre dromadaires.