Akis (Chourmouzios) Tsiotsios
   Communications & Signal Processing Group, Imperial College London

   

  
 

 
Contact Details 

Akis Tsiotsios
 Room 809
Dpt. of Electrical & Electronic Engineering
Imperial College London
South Kensington campus
London SW7 2AZ, UK
 c.tsiotsios [at] imperial.ac.uk
 

I am a Research Assistant in CSP group, Imperial College London, working towards a PhD on Underwater Robotic Vision for the NOPTILUS project. My supervisors are Dr. T-K Kim and Prof. Andrew Davison. In the past, I worked with Prof. Maria Petrou.

In 2010, I received the Meng degree from the Deparment of Electrical and Computer Engineering in Aristotle University of Thessaloniki (AUTH), where I majored in Signal Processing and Computer Engineering. I completed my Master's thesis on denoising of seismic images and anisotropic diffusion filtering,  in collaboration with Informatics & Telematics Institute (ITI). I was also a visiting student in the Department of Electronics, University of Barcelona (EL-UB) in 2008.

My research interests lie in the field of Computer & Robotic Vision. Specifically, Underwater Vision, Light propagation in scattering media and Photometric Stereo consist my main research themes.

 

  

Journal Publications
 



 

 

 


On the Choice of the Parameters for Anisotropic Diffusion in Image Processing
C. Tsiotsios and M. Petrou, Pattern Recognition (2012), http://dx.doi.org/10.1016/j.patcog.2012.11.012

Anisotropic Diffusion filtering is highly dependent on some crucial parameters, such as the conductance function, the gradient threshold parameter and the stopping time of the iterative process. The various alternative options at each stage of the algorithm are examined and evaluated and the best choice is selected. An automatic stopping criterion is proposed, that takes into consideration the quality of the preserved edges as opposed to just the level of smoothing achieved. The proposed scheme is evaluated with the help of real and simulated images, and compared with other state of the art schemes using objective criteria

Download the paper's Anisotropic Diffusion MATLAB code here
     
         
  Conference Publications  
  M. Angelopoulou, C. Tsiotsios and M. Petrou, Limitations of Vision Guided Underwater Navigation, IFAC Workshop on Navigation, Guidance and Control of Underwater Vehicles (NGCUV), Apr 2012.