Avizo and the Connex3

Afbeelding van Lemin ChenThis week we tried to use different software to build a 3D model from 2D images. The program is called Avizo and it is mainly used in hospitals and medical research facilities. It is easy to handle and gives us all the needed parameters to create a smooth 3D surface. The interface of monolith was way harder to work with so not a tear was shed when we said our goodbyes today.


When we filmed the reaction we wanted to amplify the contrast between the two colours of the oscillating reaction. We tried using red and blue paper as background, but this did not give good results. White paper gives a good contrast but the footage has some light pollution because of the environment. In Avizo we found a filter called channel 3 that eliminates most of the light pollution and that gives great contrast between red and blue. By using this filter we have more tolerance during filming and we have one less problem to worry about. In Avizo we start with uploading the set of images and choose a scaling for all the axes. Knowing that a bigger z-direction scaling makes the conical structures narrower, we create the wanted 3D model.We then choose a greyscale value that separates the model into two parts (above and below the given value). Avizo creates two STL files that we send to Rhino. Here we scale it correctly and cut out the wanted saddle shape. We assign different colour and material properties to the different STL files and from that point on, the Connex3 printer does the rest.


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