New publication: Some video abstraction techniques for displaying body movement in analysis and performance

leonardo-2013Today the MIT Press journal Leonardo has published my paper entitled “Some video abstraction techniques for displaying body movement in analysis and performance”. The paper is a summary of my work on different types of visualisation techniques of music-related body motion. Most of these techniques were developed during my PhD, but have been refined over the course of my post-doc fellowship.

The paper is available from the Leonardo web page (or MUSE), and will also be posted in the digital archive at UiO after the 6 month embargo period.

A. R. Jensenius. Some video abstraction techniques for displaying body movement in analysis and performance. Leonardo, 46(1):53–60, 2013.

This paper presents an overview of techniques for creating visual displays of human body movement based on video recordings. First a review of early movement and video visualization techniques is given. Then follows an overview of techniques that the author has developed and used in the study of music-related body movements: motion history images, motion average images, motion history keyframe images and motiongrams. Finally, examples are given of how such visualization techniques have been used in empirical music research, in medical research and for creative applications.


   Author = {Jensenius, Alexander Refsum},
   Journal = {Leonardo},
   Number = {1},
   Pages = {53--60},
   Title = {Some video abstraction techniques for displaying body movement in analysis and performance},
   Volume = {46},
   Year = {2013}}

Visual overviews in MS Academic Search

I have been using Google Scholar as one of my main sources for finding academic papers and books, and find that is has improved considerably over the last few years.

A while ago they also opened for creating your own academic profile. It is fairly basic, but they have done a great job in managing to find most of my papers, citations, etc.

Now also Microsoft has jumped on academic search, and has launched their own service. When I first visited my personal page, they had only found a handful of my publications. Differently to Google Scholar, though, they allow people to upload their own BibTeX files with publication information. The data from the BibTeX file is not used directly, but somehow merged with everything else. The end result is not so bad, and after my upload the content on my profile has improved considerably.

Perhaps more interestingly than the profile page, though, are some of the new visualisation tools they offer, including a co-author graph that neatly visualises who I have published together with.

The citation graph shows who has been citing my stuff, which can potentially also be interesting to know.

There is also a co-author path, in which it is possible to see the connections between yourself and some other person. This is not directly useful, but can potentially be amusing, I guess.

All in all, the new MS Academic Search seems promising, and with some interesting features that make it stand out from Google Scholar.

Of course, there are also other academic solutions, e.g.
Mendeley, and Citeulike, but they are all more specific (and partly closed) network based things.

Eigenvalues for journals

A while back Ola Nordal wrote about journal ranking in his blog, referring to a website called The point is to rank journals based on two factors:

  • Eigenfactor Score (EF): “A measure of the overall value provided by all of the articles published in a given journal in a year”.
  • Article Influence Score (AI): “a measure of a journal’s prestige based on per article citations and comparable to Impact Factor”.

Not surprisingly, natural science/medicine journals based in the US are on most of the top 10 lists. Ola found that historical journals are way down on the list. But what about some music journals? As expected the figures are low. Here are some figures based on papers from 2008: