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Recently a new version of Ubuntu went public. Ubuntu 10.04 Lucid introduces some improvements and some eye candy. Of course my linux machine was updated to run this version over the previously installed 9.10 Karmic build. Everything went well and I was happy as a little boy being handed a popsicle by his mother on a hot summer day in July. Until I found out..

Happy as I was after like a week or two I decided to run my python application which suddenly decided to crash bigtime. The application is created for Educational Software, a course at the TUDelft. It is nearly finished and running smoothly in 9.10 Karmic. It uses VTK (edited), PyQT and vtkTeem and produces some visualizations of structural connectivity in the brain. But suddenly, in ubuntu 10.04, creating a mask with as input an vtkTeem.NRRDReader() output and VTIReader output (casted to unsigned char) produces the following error:

*** glibc detected *** python: double free or corruption (out): 0x00007f0984000990 ***

My first guess is that this only produced a warning in the previous eglibc and in the new version is (correctly) handled by throwing an error. Since ubuntu relies heavily on eglibc a simple fix is out of the question. Seems we have to either dive into the VTK source and check what is wrong or really hope I made a stupid mistake somewhere in my code ).

ubuntu 1 – 0 bastijn

Stay tuned!

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Last friday I received a mail with the following contents:

“We are very pleased to inform you that your paper has been ACCEPTED
for the Eurographics Workshop on Visual Computing for Biology and
Medicine (EG VCBM) 2010.”

After a little celebration that our paper got accepted at the conference it was time to read the comments of the reviewers. Those weren’t that bad at all, of course we need to do some work but I think we can do a lot before the 1st of July. Lets hope

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Last year I have followed the course IN4307: Medical Visualization, which resulted in a final mark of 8 out of 10. The docent of the course, C.P. Botha, however, asked a fellow student, André van Dixhoorn, and me if we would like to combine our work in one paper and submit this to VCBM 2010 to see if we could get through.

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