Monday, October 30, 2006

Canned Signs or Gebarenblik

An Dutch company called RDG Kompagne sells software package Gebarenblik (Canned Signs) developed by Handicom, see their English product description. It is also sold by inTAAL. Their logo (left) seems rather elaborate to indicate a simplified sign system? It is an application to help the teaching and learning of Weerklankgebaren. This is a set of about 1000 signs (with images, pictograms and the like) which are quite similar to this Simplified Sign System from the US. You could buy a book (50-60 euro), but this software (135 euro) lets you create on-demand practice material, practice on the computer, and play a memory-game.

Tuesday, October 24, 2006

[Mail] Translating the Form of a Gesture

Hamburg/Rotterdam - July/October 2006 (image source) Dear Jeroen, I assume that gestures have a content and a form. Do you think it is possible to translate only the structure (form) of a gesture, ignoring the meaning (content) of it? Is there a way to translate body language into body language, avoiding it´s message and being consequent with its space-time elements? Would be nice to know your answer. I love your site! Greetings, Monica Antezana

Sunday, October 22, 2006

Cabinet and Blue Eyes

A colleague of mine called Ianus Keller, developed The Cabinet during his PhD work here at the TU Delft. It is a device to scan and digitally collect images for further usage in collages and the like. It has gesture recognition in the sense that you can use a stylus on the touchsensitive tabletop display to manipulate images and perform certain functions. Ever dreamed of being the world's premier digital collage building designer? (source) Inspired by his work a group at the TU Eindhoven recently made news headlines with Blue Eyes (pdf - video), their version of a Cabinet-like scanning and collecting device. They also use gestures to manipulate the images. You can even use both hands in certain gestures. The hands are tracked by the overhead camera, there is no touch-sensitive display involved it appears. I would think that a multi-touch solution would fit the design nicely as well. They use it to make mood boards. Do you know the difference between a collage and a mood board? (source)

Thursday, October 19, 2006

ISGS 3rd International Conference: Integrating Gestures

The International Society for Gesture Studies is organizing their third International Conference. It is called Integrating Gestures. It will be held June 18-21, 2007, at the Northwestern University in Evanston, Illinois (just north of Chicago). Deadline for submissions of abstracts is NOVEMBER 25, 2006 The International Society for Gesture Studies (ISGS) was founded in 2002. They organize conferences (Austin 2002, Lyon 2005, Illinois2007) and supports the international journal Gesture. The Nijmegen Gesture Center is one of the supporting pillars, as are the labs of Janet Bavelas, Susan Goldin-Meadow, David McNeill, and the Berlin Gesture Center (see their links).

Wednesday, October 18, 2006

A Poem called Gestures

Just in case a poet (or poetry lover) lurks inside you, here is a poem by Kathleen Vibbert called Gestures. There are no doves along the reef ...
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Monday, October 16, 2006

Rock Paper Scissors for Fanatics

Somewhere out there is a man called David C. Lovelace. And he seems to be very busy filling the internet with graphics, flash, cartoons. The thing that caught my eye was his slightly over-the-top expansion of a simple game of gestures called Rock-Paper-Scissors (RPS). Wanna play RPS with more than 3 gestures? (source OneMoreLevel) You would think a man was content with seeing an obsession come to life in such a nice way. But mister Lovelace went on to make an even bigger RPS game with 101 gestures! And a more personal note: Bernie DeKoven listed RPS-25 on his FunLog site at November 24, 2005. He added a dedication to his son Elyon DeKoven, who was a PhD-student just before me at my department, and his grandson, Zev, one-year-old at the time. So, Elyon, if you happen to read this: congratulations with becoming a daddy! It's a funny small world.

Friday, October 13, 2006

Ikea's Anna Smiles in the Face of Abuse or Stupidity

Need support or help from Ikea? They will gladly tell you to go Ask Anna!. Anna, a cheap but decent embodied conversational agent? She may not solve your problems, but she will sell you a lovely couch whenever she can. Well, I find particular fault with the annoying way she keeps smiling, charmingly lets her head drop to one side, and blinks her eyes at me. I asked her "Did you know the Ikea concern is a financial myriad of foundations sleucing away the money to the Dutch Antilles without paying decent taxes anywhere?" Anna merely blinked her cold blue eyes without moving a muscle and replied: Read here to learn more about IKEA in the world. Well I guess Ikea are as good as most companies and not as bad as some. Or at least I tell myself this every time I need cheap, but decent furniture.
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Thursday, October 12, 2006

2006 Gebärdensprachworkshop der RWTH Aachen

Important Upcoming Event! The 2006 Gebärdensprachworkshop der RWTH Aachen! The place to be on oktober 27th? Featuring, among many other speakers, yours truly :-) Register at the website for a humble 10 euro's. You will not be disappointed. There are nice talks, nice sandwiches and a good crowd. Many Deaf Germans attend. It is something of a social event too. I have been to the last two workshops and found them very nice. They really organise things to accomodate Deaf attendees. Two sign language interpreters and large video projections aid the presentations. The group in Aachen working on sign language recognition is one the oldest in the field.

[Mail] Is Gesture a Principle?

Budapest - July 2006 (source) Dear Jeroen, I am enjoying your blog. You have just the right balance of visual interest, short articles, humor and a great deal of knowledge lurking about behind the scenes. This is what my blog should do, but it gets mired in earnestness and I don't blog regularly. With a colleague I am writing a book on what we call the principles. To be a principle something should be manifest at all levels and its withdrawal would make the universe as we know it collapse. This is a very modest project as you can see. An example of a principle is attraction: molecular bonds, gravity, sex, magnetism, planetary orbits, obsessions, addictions, flies and shit, money and misers. The list of attractions is infinite. Principles have the interesting quality of being evident only in their manifestations. You can't see, hear, smell, touch or taste an attraction but they are everywhere and you constantly experience them. My colleague, whose concept this is, believes that gesture is a principle. I am wrestling with the question. One problem is that gesture seems to be interpretive and communicative, so it seems to be for the human and animal realm. But, when I look at plants, flowers and trees each seems to have unique and characteristic sets of gestures. A prickly pear cactus, for example, has very different gestures than a Rembrandt tulip. My writing desk has scalloped ornaments, and curvaceous entarsia. These, it seems to me, have gesture, as does the grain of the walnut. At some point pattern seems to achieve lift off and take on what I can only call gesture. If you look at this portrait by Rubens, you can see gesture in the clothing, the feather on the hat and the background. Does this use of gesture make sense to you? Is gesture only in the eye of the beholder and the intent of the gesturer? Can a marble cornice have gesture? Does gesture seem so fundamental that you could call it a principle? Cheers, Geoffrey Thomas

[Mail] Correspondence on the blog

Dear Reader, you are hereby cordially invited to correspond on gesture or sign language topics. [mail at jeroenarendsen dot nl] A few weeks back I got some email with questions and ideas about gestures. I like getting such emails. Not because it tells me there are readers out there. I can check the statistics for that. I like it because it offers a fresh perspective. The ideas expressed are usually different from my own. It makes me think again about gestures. Will you write me? (source) Some of the emails lead to a small discussion. Ideas are exchanged or good questions posed. I will then ask the writers if I can put the mail online for two reasons. First, to share it with the other readers. Second, to archive it on the website. I simply post the original email and put the rest of the correspondence in the comments. You like to write but do not want it published on the blog? Don't worry, I will publish nothing without your explicit permission.

Saturday, October 07, 2006

Atlas Gloves

Who does not love Google Earth? It is free, it is fun, it is useful and usable. What more could anyone want? I am the eye in the sky (source) Well... some people, like Dan Phiffer and Mushon Zer-Aviv, want a gesture interface to Google Earth. Check out their DIY gesture recognition with Atlas Gloves. They use a dual-layer projection, like in the Playstation Eye-Toy and Xbox. The software is open source and downloadable. So anyone can try to get it working, and people do. I wonder: will Google Earth be that Killer Gesture Application? Perhaps the combination of being able to gesture and using a big projection on the wall is what makes it so good? Google Earth looks nice on a big screen. And gesture recognition needs a bit of distance between user and camera. So it works nicely in this case. Some of the functionality may however be difficult, like entering city names or coordinates. Here are some guys who use a fancy two-handed touchscreen to create a speech and gesture interface. They use the speech recognition for entering city names and specific commands like layer activation. How would the Atlas gloves do that for you?

Wednesday, October 04, 2006

The Evolutionary Edge of Imitation

Not a few scientists and/or psychologists are quite excited by the discovery of mirror neurons. What is a mirror neuron? A mirror neuron fires both when you perform an action and when you observe the same action performed by another. The neuron "mirrors" the behavior of others, as though you were acting yourself. Why do we and other apes have this mirror system? It is speculated that we use it to understand the actions of other people, and for learning new skills by imitation. Do you want to feel your mirror neurons at work in a game of mind reading? Try guessing Rooney's intentions over here. But when it comes to imitation one wonders who benefits most from it? Animal or Man? It seems that at least one gesturing cat makes the most of it. Will Garfield benefit from his gestural abilities in an evolutionary sense as well? Will Jon be able to use his mirror neurons to understand Garfield's intentions better next time? (source) And then again it may not be a matter of out-evolving other animal species. We may have to go up against the machines one day. At Honda (maker of Asimo) and ATR they are equipping robots with abilities to read minds and imitate gestures. Victory for the machines? (source) At least for the machine it is clear how it accomplishes the task. It scans your brain with MRI. That brings us back to humans and their mirror neurons. How does it work? We do not scan other people's brains. We merely have our eyes. I believe that we see what we want to see as much as what is actually shown. We do not read minds but project our own minds unto others. So do our mirror neurons inform the visual system and the rest of the brain (and body?) what to see? Or does my visual system communicate directly with unknown human motion perception bits and pieces. Pieces that are as much about perception as they are about motor production? It would be very interesting to see what happens to firing mirron neurons in cases of misjudged intentions. Suppose we think we see someone about to hit another man, whereas he was actually just scratching his armpit (for want of a nicer example). Would the right mirror neurons fire, because it is but the low-level motor programs associated with the actual postures and movements that are mirrored? Or would the wrong mirror neurons fire because they are under the control of our higher 'mind projecting' powers? I thought I saw a terrorist Acting suspiciously So my neurons fired first Triggered unhappily

Tuesday, October 03, 2006

Umpire insulted by gesture

More important than politics, semiotics, science and art is of course... cricket. The noble game of hitting a ball and running back and forth dominates the lives of countless anglophiles throughout the former commonwealth. Men will be boys? (source) And now it appears that Pakistan captain Inzamam-ul Haq made an insulting gesture to umpire Darrell Hair, resulting in Hair's leaving of the match against England, effectively ending it. Unfortunately, there is no picture of the actual gesture. It's like with cricketer Darren Lehmann, the web is silent. There is only this strange description: "Inzamam then made a waving gesture to which Hair took great exception and walked out. One explanation is that the Australian umpire felt the gesture was insulting to anyone who knew anything about Pakistani culture." (source DNA Indiae) Was it like this one from Shoaib Akhtar? (source) So, has anyone seen it and are you willing to share an event so uncharacteristic of the grounds with this audience? Was the insult obvious to all bystanders or was Hair overly sensitive? Or did Inzamam think he could be clever and insult the umpire in a way that it would be clear for them both but not for anyone else. Did he think Hair would not be able to act on it if nobody else saw it? I think this sort of complex reasoning might be how the perception of insults sometimes works.

Monday, October 02, 2006

Storytelling in Sign Language of the Netherlands

There is a nice Dutch site with Verhalen in Gebarentaal, 10 stories told in Sign Language of the Netherlands (Nederlandse Gebarentaal, NGT) by Wim Emmerik, Marja Bönker, Tony Bloem, Harm de Vries, Dickson Sint Jago, John van Gelder, Leontien Koenders, Gert Stappenbelt, Gert-Jan de Kleer. They each last about 7 minutes. You'll need realplayer. (source Vi-taal) The stories were part of television show De Gebarenwinkel broadcast by the VPRO from 1989 - 1990. One of the signers, Tony Bloem, is a very active storyteller here in the Netherlands, some of his works are available at Vi-taal. He also translated children's books into NGT and sells them for a reasonable price on DVD.

Tarjani Mudra and Cornuta

An interesting similarity in form and meaning: The Tarjani Mudra and the Corna gesture (Horns or Cornuta). They are used in both cultures or gesture systems as a symbol to ward of evil. If you are evil you should be warded off now (source) The Tarjani Mudra is reported here to be made only with the index finger. And here is a source mentioning that the Tarjani-mudra is the same as the Abhaya-mudra. (Thanks for the link Patto).

Saturday, September 30, 2006

Clinton Wags His Finger

Gesture in the news today: Bill Clinton, former US president, wags his finger at a journalist who questions him over 'failing to kill Bin Laden'. Do you feel Clinton has anything to apologize for? (video) I am glad I live in a country where failing to kill anyone is not a political risk factor. But on with the gestures: It is not the first time Clinton is in the same position and using the same gestures to an American journalist.

Under the Spell of Tinkerbell

Come and travel with me Fly with me to Neverland Peter Pan will come for us Just think your happy thoughts Oh and of course a bit of pixie dust From the one and only Tinkerbell My kids just got the old Disney version of Peter Pan and are loving it. And so do I. What a lovely story about fantasy and growing up. But the tiny Tinkerbell caught my professional eye as well. She is interesting to watch for her gestures and body language. She doesn't talk, she just tingles and gestures. Check the movie for examples. Still Peter Pan, Captain Hook and the others who believe in fairies understand her. I started to pay attention to how she gestures and it struck me that she barely mimes, nor does she create language-like gestures. Nearly all of her gesturing is spent on expression of her emotions or attitudes towards Peter and Wendy. Now I find myself at a crossroads. Behind me is the road I traveled through a land of gestures that were all about form and meaning, about semiotics and perception. I felt the expressive aspect of gesturing to be mostly besides the point. And the point was that practically all gestures signify something. They all carry meaning from maker to taker. And my main interest has been how humans achieve this so effortlessly. Oh no, not feelings! (source) I had expression of emotions nicely stacked in a box of (mostly) facial expressions, subtitled 'unvoluntary universal displays'. One does not so much intend to communicate with them, but onlookers can glean information from them. But I am afraid it is just not true. Humans (and fairies) use displays of emotion as a way to communicate them to others. We can fully intend to influence others to our advantage this way. An expressive gesture can in fact be a complex social act, even if it has its roots in a simple reflex. And so my choice is made I will not grow up But endulge myself in fantasy And let my feelings come alive Let us gesture Let us fly

Thursday, September 28, 2006

University News: PR for ASLR

At my university we have a newspaper called TU Delta. They interviewed my colleagues and me about our Automatic Sign Language Recognition (ASLR) project. Browsing the Delta archives I saw an interview with Joeri van Zuilen, a Deaf student at the TUD (and native signer). By chance, Joeri was kind enough to participate in my studies regarding the perception of sign language. He is also blogging but not working at NASA (yet). Integraal is our university's glossy. They also wrote about us in a piece on enabling technology. We are getting popular, it seems. In their archives I found a big piece on a gesture recognition project by Caroline Hummels, a colleague at my own department. She got her PhD in 2000 with her work on the expressive aspect of gesturing and how this can help designers shape their designs. Why doI tell you these things here? Because sometimes, a PhD-student needs to know he is not invisible and not alone... (sniff ;-)

Tuesday, September 26, 2006

The Biggest Misunderstanding About Gestures

Why is it that some, like Judie Haynes from the US, would want to teach the young to watch out how they gesture when they meet people from a different culture? She gives 10 examples that are "perfectly acceptable" in the United States but rude, or obscene, in other cultures. However, her examples are sometimes incorrect, always exaggerate differences, and show no appreciation for Man's ability to meet strangers and tolerate cultural differences. A meeting between Americans and scary foreigners? (source) Is it part of a xenophobic program of fear? Are people really convinced they won't be able to establish fruitful communications with foreigners? Or do we just like to point out the differences between cultures? For my own piece of mind I will assume this last suggestion is true in most cases. Do I think that cultural differences are not interesting? No, they can be interesting, but I think there are more interesting things to tell about gestures and culture than just point out different meanings for emblematic gestures. Desmond Morris, in his Gestures, their Origin and Distribution (1979), at least provides great information about the spread of meanings of a gesture throughout Europe and a history. See this example of The Thumb Up. If you want to talk about culture and emblematic gestures, follow his example and do it right. Some trust in God, and their God alone. Few may trust in humans, but I thank God I am one of those happy few. I believe people are able to handle cultural differences if they are both willing. Gestures will seldom lead to misunderstandings. In fact, I will raise the reward for evidence of a gesture mix-up to 150 euro. I think gesturing will often help you communicate to strangers, and clarify your intentions. It can form the basis of acquiring an unknown language. I felt confident when I went to Italy and Russia that I could jumpstart communications through gesturing. I quickly picked up a bit of Italian and Russian like that and to top it all off: I learned the meaning of their gestures without any problems. A meeting between New Zealanders and kids from Yemen (source) When my kids grow older I hope to teach them not to be afraid to walk up to friendly strangers and talk to them. We are all humans after all. And I will tell them to talk with their hands if words fail. Gestures are not our enemy, they may well be Man's best friend.

Sunday, September 24, 2006

Do your gestures look like they should?

Are both sign language and gestures best defined in terms of what they should look like? Reading in Crasborn's (2001) thesis always gives me plenty to think about. One thing struck me yesterday. The emphasis placed on perception in the modeling of sign language. I read the same before in a review by Sara Fortuna of 'Ideeen zu Einer Mimik' and other works of Johann Jakob Engel. Crasborn describes sign language (NGT) and Engel describes gestures mostly in a theatrical context. One is about signers and their conversational partners, the other about actors and their audience. Yet they both state that a gesture (or sign) is defined in terms of what it should look like. Is a perfect sign in the eye of the beholder? (source Heather Brooks) What a gesture should look like is the code shared between producer and observer. It is the language, or the semiotic system, employed by them. We articulate a gesture in such a way that it will hopefully carry the right message. We try to produce something that looks like the target. When we do this we take into account both how we think the observer sees it, but we may also reflect on our production ourselves. Wait a minute. I might be writing trivial stuff here. Is not the same statement about production for perception true for almost anything? Do we all try to be the perfect wife or husband, or do we try to look like it? And when my daughter of 4 is told to clean up, I think she is trying very hard to look busy, while minimizing actual effort. Do we act to look like we should? (source) My mentor Ans said we all carry part of the world inside us just as much as we are part of the world. We adjust our behaviour for others. Gestures are no exception. And so, the importance of perception is nothing special for gestures. In comparison with studies of production it is an empty statement to say perception is more important. True, without an underlying perceptual specification there can be no efficient communication. But we may get to a shared code only after many tried productions. And without production there is nothing to perceive. I may think I know exactly what a tree falling in the woods should sound like, but without an actual tree falling, can there be a debate?

Friday, September 22, 2006

Countries, Cultures and Gestures

The way people gesture is part of the culture of a country. Which is why I present you here a list of decent introductions into the culture of many countries. Be sure to check each second paragraph on 'Communication Styles' which includes speech and gestures. You can also learn about displays of emotion, and many other aspects of culture. More external links are given in numbers 2, 3, etc. Any posts on this site are indicated with the little logo.
Afghanistan Albania Algeria Argentina Australia Austria Azerbaijan Bangladesh Belgium Benin Bolivia Bosnia And Herzegovina Botswana Brazil 2 3 Burundi Cambodia Cameroon Canada Central African Republic Chile China 2 3 4 Colombia Congo, The Democratic Republic Of The Costa Rica Cote D'ivoire Croatia Cuba Czech Republic Dominican Republic Ecuador Egypt El Salvador Eritrea Estonia Ethiopia 2 Finland France 2 Georgia Germany Ghana Greece Guatemala Guinea Guyana Haiti Honduras Hong Kong Hungary India Indonesia Iran, Islamic Republic Of - 2 Iraq Ireland Israel Italy 2 3 Jamaica Japan 2 3 4 Jordan Kazakhstan Kenya Korea, Republic Of 2 Kyrgyz Republic Lao, People's Democratic Republic Latvia Lebanon Libyan Arab Jamahiriya Lithuania Macedonia Malawi Malaysia Mali Mexico 2 Morocco Mozambique Namibia Nepal 2 Netherlands New Zealand Nicaragua Niger Nigeria Norway Pakistan Paraguay Peru Philippines 2 Poland Portugal Romania Russian Federation Rwanda Saudi Arabia Senegal Sierra Leone Singapore Slovakia Slovenia Somalia South Africa 2 Spain 2 Sri Lanka Sudan Syria Taiwan 2 Tajikistan Tanzania Thailand Timor-leste Tunisia Turkey Uganda Ukraine United Kingdom United States of America Uruguay 2 Venezuela Vietnam Yemen Zambia Zimbabwe
Ps. Many, many thanks to the Canadian Office of Foreign Affairs for putting the info collected by their people online. Should the links break then please let me know. There is a mirror I can point you to.