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| Date 2007 |
Topic/Presenter
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Afternoon Tea
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| 07/12 |
Presentation by: Marinus Boekelo
Title: Camera control and model fitting in the Potometer
The Potometer is Geoff Wyvill's 2004 program that enables us to measure the dimensions of circular pots from photographs. It was written in a hurry and my job was to give it a makeover to make it 'usable'. I also added two new features. One is to enable it to handle cases where pictures of pots have been cut out of an original bigger picture. The other uses edge detection to show the user how accurately the model fits the photo.
Marinus is a visiting researcher from the Univesity of Twente.
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| 22/11 |
Instead of a regular meeting this week, we will go look over the Polytechnic art students' show Site 2007.
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| 02/11 |
We are planning to build an abstract sculpture from CDROMs.
This will mean a lot of drilling, cutting and assembly
together with some cooperative design work.
The sculpture will be assembled from tetrahedral cells,
each consisting of eight CDs joined by little plastic
rings that pass through holes near the edge of the CDs.
Adjacent cells will share one wall.
Each wall is made from two CDs 'back to back'.
Attached is a webcam picture of the basic cell. For a bit more insight, you could look at the short movie:
movie
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| 16/11 |
Workshop by: Geoff Wyvill
Title: Probability, Puzzles and Perspective.
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| 29/10 |
Presentation by: Tim Penhey
Title: Collaborative software development with distributed teams.
Tim is a former graduate of Otago with experience of programming here and in England.
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| 28/09 |
No meeting, but there is afternoon tea
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Chris Handley
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| 21/09 |
Presentation by: Ignas Kukenys
Title: Demoscene introduction
There are people outside of this lab who love creating stunning
computer graphics and sound 'just because they can (tm)'. I will
introduce the demoscene - a culture of programmed multimedia, talk about
different 'genres' of demos, demoscene events - the compos, share my
experiences from Breakpoint'04 in Germany and of course try to show some
cool pieces of computer animation, hopefully followed by a discussion on
how we could create something and participate in one of the events.
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Marinus Boekelo
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| 14/09 |
A short 'business' meeting to allocate/reallocate jobs to be done running the group
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| 7/09 |
Presentation by: Phil McLeod
Title: Seam Carving for Content-Aware Image Resizing
Phil has implemented this idea from SIGGRAPH 07
He will give an informal explanation and a short demo.
It is pretty cool.
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Andrés Navarro Newball
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| 31/08 |
Postgraduate presentation rehearsals
Robert Visser: Animation, Physics, Passive Dynamics and Dogs
Mike Phillips: Interactive ray tracing
These two talks are rehearsals for the 'official' presentations to the department next week. Your questions and feedback will be specially useful and welcome.
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Ignas Kukenys
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| 24/08 |
Presentation by: Robert Visser
Title: SIGGRAPH 2007, Student Volunteer Perspective
Robert Visser also attended SIGGRAPH this year as a student volunteer.
He will give a short chat about his experience. This should be of particular
interest to any students who might want to do this next year.
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Matthew Jenkin
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| 17/08 |
Presentation by: Geoff Wyvill
Title: SIGGRAPH 2007
The annual SIGGRAPH conference is much more than just a conference.
I propose to give a short talk about what it is, what went on and why
this event attracts 40,000 people. I have some photos and video too.
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Phil McLeod
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| 20/07 |
Visit: Polytech's rapid prototyping system
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| 13/07 |
No research business this week but a few of us will be meeting in the back of Graphics to learn about 3D regular figures. Actually, this is an excuse for a play with the lab's Zome toy -- whoops Zome tool.
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| 06/07 |
Presentation rehearsals: Stage 4 students
Jochen: filtered noise
Mash: virtual snowboard
Ben: vibrato test software
Mark: audience games - the next stage
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Damon Simpson
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| 28/06 |
Farewell to Marie-Paule
A afternoon tea party to say farewell to our visiting professor Marie-Paule Cani.
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Marie-Paule Cani
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| 22/06 |
Presentation by: Jamie Wither, INRIA
Title:Realistic Hair from a Sketch
This paper explores a sketch-based interface for quickly
yet accurately creating visually realistic hair for virtual
characters. Recently, physically-based models have proved
successful for generating a wide variety of hair types, but
they do not provide a straightforward method for designing
target hairstyles. The contribution of this paper is
to propose a user-friendly method for controlling such a
physically-based model, requiring no specific knowledge of
mechanics or hair styling: the user sketches example hair
strands over a side view of the character?s head, or alternatively
annotates a picture of real hair viewed from the side
serving as a reference. We show how the sketch can be used
to infer the geometric and mechanical properties of the hair
strands, to adjust the shape of the scalp, and to generate an
adequate hair volume. Our method is validated on a wide
variety of hair styles, from straight to curly and short to
long hair.
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The Duck
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| 15/06 |
Smart Day
Annual graphics lunch, this year at St. Lee's.
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| 01/06 |
Presentation by: Geoff Wyvill
Title:at ISAMA 2007
ISAMA is The International Society of the Arts, Mathematics, and Architecture
I gave an invited paper at their 2007 conference in College Station, Texas last week. Other invited speakers were Carlo Sequin, Nat Friedman and George Hart.
What is it that mathematically inclined sculptors and architects do? Why is this event such spectacular fun.
I'll try to answer those questions and any others in my trip report ---- with pictures.
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Robert Visser
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| 25/05 |
Presentation by: Peter Davidson
Title: Motion analysis of arm impact using MATLAB® Simmechanics ® and Lightwave 3-D ®
Distal arm fractures are the commonest form of fracture in children
in New Zealand. Ninety percent of these fractures are caused by falls
onto outstretched arms. The current biomechanical research programme
at Injury Prevention Research Unit, (IPRU) uses a method of computer
simulation where the risk of arm fracture is modelled as a function
of fall circumstance, impact surface mechanical properties and child
physical properties. This presentation will discuss the application
of MATLAB ® Simmechanics ® and Lightwave 3-D ® software programs in
estimating child physical properties. Motion Capture (MOCAP) data of
gymnasts conducting back-handsprings is used as input to the programs.
Forces and displacements of the joints during arm impact are calculated
using inverse dynamics. Understanding the biomechanical aspects of fall
impact will help the development of more effective injury prevention
strategies for arm fractures in children.
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Raymond Scurr
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| 11/05 |
Presentation by: Marie-Paule Cani
Title:Computers: a toy for males, a great tool for females?
Gender and Computer Science
Time:3.00
Location:Castle D.
This talk will discuss Gender and Computer Science, starting from my
experience as a Professor in this field where women are a small minority.
The analysis of the situation shows a lack of female professional computer
scientists and academics as well as an alarmingly decreasing number of
female students in the area. I will try to identify the reasons for this
situation, and discuss some solutions: Why did a rather new and so useful
tool, the computer, quickly build up a male image? How do male and female
reactions differ towards technology? Are there good reasons for excluding
females from Computer Science - or for them to auto-exclude? How could we
attract them back in and what would be the societal benefits?
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| 27/04 |
Presentation by: Phil McLeod
Title: 5th New Zealand Computer Science Research Student Conference
Phil attended The 5th New Zealand Computer Science Research Student Conference at Waikato University earlier this month. He will give us a short talk about it.
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Brendan McCane
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| 20/04 |
Presentation by: Stage 4 students
A few weeks ago, the postgraduate students each gave a short description of what they were doing for the benefit of the rest of the group. Now it is the turn of the Stage 4 students.
Four very short talks on projects just started, possibly with one demonstration.
Tea will follow.
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Mike Phillips
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| 05/04 |
No meeting, but afternoon tea at 3:00 and a graphics lab jam session.
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The Duck
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| 30/03 |
Presentation by: Dr. Carl Gutwin
Dr. Carl Gutwin is Canada Research Chair in Next Generation Groupware at the University of Saskatchewan.
see: http://www.usask.ca/crc/profiles/gutwin.php
He is visiting and giving the CS/IT seminar in Archway 2 at 1pm. This seminar, about fish-eye images, should be of interest to all graphics people.
After the seminar he will come to our Graphics Group meeting. He won't be giving another talk but Holger and Geoff plan to ask him some questions about his work and views on collaborative computing. We will then invite questions from everyone else.
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Geoff Wyvill
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| 23/03 |
No meeting, but afternoon tea at 3:00
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Nathan Roundtree
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| 17/03 |
Presentation by: Paul Campbell
Title: Making Stuff
In these days of mass production, it seems hardly worth making anything ordinary. Ballpoint pens under $1 seem to work very well. But there is a hard core of 'fun loving' souls who like to make things anyway. Paul will talk about some of the more extraordinary things people make that result in explosions or high flying rockets.
Paul is an Otago Graduate with years of experience in making real hardware including circuit and chip design. These days, he works from New Zealand for a US company making TV set-top boxes. So he knows about encryption and silicon. He also flies rockets.
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Chris Handley
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| 09/03 |
Special session: 'Meet the Gang'.
Our current postgraduates give a 5-10 minute talk on their projects as an introduction for the rest of the group.
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Departmental bbq
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| 02/03 |
After today's seminar by Marie-Paule Cani there is afternoon tea in the lab
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Feng Zhou (Joe)
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| 19/02 |
Presentation by: Dr. Andrew Glassner
Andrew has offered us three alternative presentations so we
will decide together on Monday. He is a very entertaining
presenter as well as a big name in computer graphics. Anyone
with an interest in Graphics, stories or computer games will find
this session rewarding.
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Damon Simpson
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| 09/02 |
Presentation by: Marie-Paule Cani
For this first research meeting of the year, our William Evans Fellow, Professor Marie-Paule
Cani will talk informally about her research group in Grenoble.
Professor Cani is an outstanding computer scientist with a specialization in computer graphics.
She is an expert in shape modelling, particularly using and developing the implicit surface
techniques pioneered by our Computer Graphics group here from 1986 to 1996. These methods are
particularly applicable to simulating the shapes found in nature where there may be holes and
twists and the flat surfaces and right angles of engineering are not found.
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Geoff Wyvill
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| 02/02 |
Lab meeting
Title: Welcome to Prof. Cani
A short meeting to welcome professor Marie-Paule Cani to the graphics lab.
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Phil McLeod
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