Netherlands Institute for Conservation, Art and Science

NICAS Colloquium

22Nov2018 12:00 - 13:00


The next edition of the NICAS Colloquium takes place on Thursday, 22 November 2018, from 12:00 to 13:00 in conference room B of the Atelier Building (Hobbemastraat 22, Amsterdam).


The chair of this colloquium will be Paolo D’Imporzano (VU).


The following presentations are scheduled for this edition of the NICAS Colloquium:


Prof. dr. Robert van Liere

Imaging Ancient Chinese Ivory Puzzle Balls: Deducing the Make Process.

Art objects often contain many hidden traces that can relate the object to the tools and techniques used to make them. With the rise of sophisticated 3D imaging techniques, these traces can now be revealed, raising the question whether the operations applied by the maker, the tools and their parameters, can be reconstructed from the final object.

In this talk, we study the example of ancient Chinese ivory puzzle balls, which are known for their beauty, finesse and their ability to arouse the curiosity of the viewer.  In the 18th century, ivory balls were crafted starting from a single block of ivory using only a lathe and a collection of sharp knives and L-shaped scalpels. We have made 3D CT scans of various ivory puzzle balls and used advanced pattern recognition techniques to obtain their morphological properties. We show how these properties can be used to deduce the make process.

Robert van Liere is a senior scientist in the Computational Imaging group at Centrum Wiskunde & Informatica (CWI) in Amsterdam. He is also a full professor at the Eindhoven University of Technology in the field of virtual reality. Previously he earned his bachelor’s degree in Industrial Design at Eindhoven University of Technology.


Rutger Morelissen

From Rijksakademie to paints

Although a large number of wall paintings from different periods is present in the Netherlands, these paintings don’t get the attention that paintings on canvas get. Little is known about the materials used. The Rijksakademie is the oldest institute teaching artists how to paint wall paintings. What exactly were they taught about techniques and materials? And what modern paints where used for wall paintings? An RCE research project is looking into these matters.

Rutger Morelissen is a Researcher Conservation & Restoration at RCE, specializing in public art and monumental art. He and Bernice Crijns are now finishing a research project on conservation of modern wall paintings.

NICAS Colloquium

More information about the NICAS Colloquium can be found here.



Thursday, 22 November 2018


12:00 – 13:00 hrs


Conference Room B, Atelier Building
Hobbemastraat 22, Amsterdam

Published by  NICAS