Posts Tagged ‘Digital Art’

Radiology Art

April 4, 2009

The Radiology Art project was started by artist and medical student Satre Stuelke in the Summer of 2007. Stuelke uses a CT scanner to acquire DICOM images of various objects (e.g., electronic apparatuses, toys) and then processes them with OsiriX Imaging Software and Adobe Photoshop. Colors are assigned based on the varying densities of materials present throughout the object. The post-processed images are stunning.

For example, here’s a CT scan of a Teslovak KT88S vacuum tube:

CT scan of a Teslovak KT88S vacuum tube[ image courtesy of Satre Stuelke ]

Related:

Bust of Mystery

July 15, 2008

Ippolita Maria Sforza (1445-1488) lived in Italy during the Renaissance. She was a member of the powerful Sforza family from Milan.

[ the marble bust of Ippolita Maria Sforza, by Francesco Laurana ]

Ippolita was the mother of Isabella di Aragona (1470-1524), who is also known as “Isabella of Aragon” or “Isabella of Naples”. You may have never heard of Isabella di Aragona, but perhaps you have seen her portrait numerous times: it is argued that Isabella is the model for Leonardo da Vinci‘s immortal painting, the Mona Lisa.

[ Is she Isabella di Aragona? ]

I am more than happy to leave that speculation to the art historians.

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The bust of Ippolita Maria Sforza

In 1488, artist Francesco Laurana (1430–1502) sculpted a bust of Ippolita Maria Sforza. It is believed that Ippolita died in 1488, so the sculpture was probably crafted in Ippolita‘s last days.

Here’s the twist: it’s also argued that the bust is not of Ippolita Maria Sforza, but of Isabella di Aragona instead!!! It seems that Isabella was quite a mystery woman:

  • she may be the Mona Lisa.
  • she may also be the model for the bust believed to be of her mother’s.
  • she may even have been married to Leonardo da Vinci and given birth to his children.

Who knows?! Let’s take a look at the photo of the bust. Does it look like the model was 43-year-old Ippolita, or 18-year-old Isabella? Draw your own conclusions.

To make things even more confusing and uncertain, there’s also Ippolita Sforza (born in 1481), who was the daughter of a cousin of Isabella di Aragona! Don’t laugh: this younger Ippolita Sforza had a daughter who was also named Ippolita!! This is truly a biographer’s nightmare.

If the  bust was indeed crafted in 1488,  it’s practically impossible that the model is 7-year old Ippolita Sforza. Therefore, for the sake of clarity, when I say “Ippolita Sforza” I mean Ippolita Maria Sforza.

Some links:

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3-D model of the bust

Art History may be fascinating, but I am more interested in technology. What led me to write this post is that there’s a 3-D model of the bust of Ippolita Maria Sforza. The bust was scanned by the Visual Computing Lab of the ISTI – CNR. The original 3-D model has 500K faces (each face is a polygon, a triangle to be precise) and is available at this model gallery (it can also be found here). You can download the 500K model in two formats:

You can visualize and process these models using MeshLab, for example. There are other software tools, such as VRMesh Studio, but I like MeshLab because it is free, open source, and very user-friendly.

Visualizing the 500K model with MeshLab, we have:

[ 500K model rendered with smoothed mesh polygons ]

This model’s mesh is quite fine. A coarser model would allow us to see the triangle mesh on the model’s surface. MeshLab comes with a sample 50K model (in PLY format) of the bust of Ippolita (a decimation by a factor of 10 of the original 500K model). This 50K model looks like:

[ 50K model rendered with flat mesh polygons ]

Taking a closer look one can see the triangle mesh more clearly:

[ close-up of  Ippolita's face (50K model) ]

I really like meshed models. I don’t know why.

I used VRMesh Studio to export both these models in point cloud format (a ASCII text file where each row contains the 3 coordinates of each point in the cloud). This might come handy if I ever feel like processing the point cloud in MATLAB.

This blog as a graph

August 27, 2007

Websites as Graphs is a cool application that creates a graph from an URL to an HTML file. At the present time, this blog is represented by the following graph:

reasonable-deviations-blog-as-a-graph.pngI quite like the fact that the Java applet builds the graph in “real-time”; the dynamics of it is quite aesthetically pleasing.


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