GravitySpace – Digital Soiree

February 16th, 2012 by Tegan

Visiting Speaker Jossekin Beilharz
Object identification and Pose Recognition on a Pressure-Sensitive Multi-Touch Floor.

Date: Tuesday 21st Feburary 2012
Time: 13:15 – 14:00
Place: Digital Arts Convent Building, opposite Wits School of the Arts

” We propose a new approach to tracking users, objects, and activities in a smart room. Unlike traditional approaches that point cameras into the 3D volume of a room, we provide all horizontal surfaces with touch sensitivity, including chairs, tables, and the floor. Gravity pushes people and objects against these surfaces, causing them to leave imprints, i.e., pressure distributions across the surface. We demonstrate how to decompose these imprints into the object and pose that caused them. The particular “perspective” reduces occlusion issues faced by regular and depth cameras. It also limits the freedom of objects from rotation and translation in 3D to rotation and translation on a plane, which allows us to recognize objects using simpler and potentially more reliable matching algorithms. We present our 8m2  floor installation, a set of active and a set of passive touch-sensitive furniture, as well as the algorithms we created for recognizing objects and poses.”

About Jossekin Beilharz:
Currently working at SAP Research, Pretoria and a member of House4Hack, Centurion. A masters student of IT-Systems Engineering at Hasso-Platter-Institute at the University of Potsdam. He worked on gravitySpace with Prof. Patrick Baudisch, chair of the Human Computer Interaction Lab at HPI in 2010-2011 and initiated a Random Hacks of Kindness event in Pretoria.

Encircling the Land

December 5th, 2011 by christo

Encircling the land -  photographic exhibition at Substation Gallery

"Encircling the Land"  is a photographic investigation of the Tswaing meteorite impact site by Stanley Sher.

Imagery from space and research on craters like Vredefort and Tswaing have established that meteorite impacts were surprisingly frequent in earth’s history, having both cataclysmic as well as life-enabling consequences for our planet. Most of these effects are hidden from us by time and geological processes which have further altered the landscape, covering the past. The Tswaing impact crater being relatively well preserved, provides visible form to these embedded events from our deep past.
 
This exhibition of 360° panoramic photographs emerges out of a series of encounters over a period of 6 months in the Tswaing meteorite impact crater. Time of a different order, is also pivotal in the photographic process, which attempts to assemble fragmented moments within a single image. The inevitable inconsistencies of light and shifting viewpoint over the 360° rotation contribute to the complexity of actually apprehending this landscape. The images retain these disruptive elements, including the digital ‘noise’ which is an artefact of a digitised process.
 
In exploring the hermeneutic question of how to read and apprehend the landscape, the exhibition is the visual component of an investigation which establishes a dialogue, embracing understandings and perceptions from the arts and sciences. The geology and history of the Tswaing crater forms the backdrop to this dialogue which considers traditional and contemporary readings, representations and interactions with landscape.
 
 
 

Reconsidering the classic South African landscape – MJ Lourens

November 29th, 2011 by christo

MJ Lourens - En Route/Highveld II

MJ Lourens – En Route/Highveld II

Recently at Artspace Gallery in Rosebank,  a serious engagment with the tradition of South African landscape painting by MJ Lourens. Here, in an acrylic on board painting,  the monumental cloud architecture of Hendrik Pierneef is melded with a brooding industrial foreground that is entirely contemporary.

National Planning Commission Animation

November 21st, 2011 by mileta

Mileta Postic from Wits Digital Arts with Jurgen Meekel and Ann-Marie Tully form Wits Film and TV and three other collaborators produced an RSA animate type presentation of the new plan for 2030. by National Planning Commission, presented by Minister Trevor Manuel. The two clips can be seen on you tube and they were aired on 3 different channels in SA.

Robotic Orchestra

November 18th, 2011 by christo

The Robotic Orchestra,  a creative collaboration between Interactive Media students from Wits Digital Arts, Music students from Wits Music, and a student from the Wits School of Electrical Engineering, had its first public performance in the Wits Amphitheatre on the evening of 17 November.

Robotic Orchestra

In front of a capacity audience,  the Orchestra performed a recital of three pieces composed by Wits Music students.

Each of the instruments was "played" by a solenoid and  the output collected by a microphone. One of the challenges of the work was the limited functionality of the solenoids which were not able to play different dynamics.

Interactive Media student, Jans de Jager explains the backend of the system

Interactive Media Masters students, Jans de Jager and Pauline Theart, explain the system to the external examiners.

A screen showing the MAX MSP layout which operted the mechanical system

The screen of the iMac, running MAX MSP, which was at the heart of the system. The Interactive Media students translated the Music students' compositions through MAX MSP.  The data was fed into Arduino boards which, in turn, powered the solenoids operating the mechanical side of the system.

Interactive Media Masters student, Pauline Theart, operating the computer system.

Robotic Orchestra -  Placebo Robot

The vibraphone, with five notes operated by solenoids.  The limited musical range and tonal pallette of the orchestra was a compositional challenge for the Music students in the project.

The creative team behind the Robotic Orchestra

The creative student team behind the successful premier of the Wits Robotic Orchestra.