University of Konstanz
Graduiertenkolleg / PhD Program
Computer and Information Science

Roman Byshko

Associated Doctoral Student in the PhD program since September 15, 2009.

advisors

1. Prof. Dr. Dietmar Saupe
2. Prof. Dr. Matthias O. Franz

organisational data

Room: Z 704
Tel.: +49 (0)7531 / 88-2882
Fax: +49 (0)7531 / 88-4715
E-mail: roman.byshko @ uni-konstanz.de
Other Resources: Workgroup Page
picture

project description

In the thesis a new method for generation of metameric colors will be implemented and compared with the state of the art methods. Metamerism is the phenomenon which causes different objects to have the same visual stimuli under a fixed illuminant. The problem of generation of the metamers has got a lot of attention in the literature. There are a lot of methods available which try to generate natural metamers. Most of these methods are capturing the properties of the spectral reflections in mathematical terms. Afterwards a wide range of approaches is applied to find spectral reflectances which a) satisfy these properties and b) deliver the desired colors under a fixed illuminant. These methods have drawbacks. The most important one is that their definition of naturalness is not necessarily natural. Our idea is to capture the properties of the natural spectral reflectances statistically. For this, we are building a system for the acquisition of multispectral images. This system will allow us to gather a huge database of natural spectral reflectances. The next step will be to estimate the probability density function that models this data. After that we will be able to generate spectral reflectances that have exactly the same statistical properties as the ones in the database, hence they will be natural. It is still to investigate the computational needs of the described approach and compare it to those of the existing methods. The other sub-project, that is the part of the thesis is the analysis of the properties of mobile displays. The goals of this sub-project are: Prior to the analysis a lot of measurements should be performed. A system was designed which allows to performed unattended measurements of mobile displays using a web server, a spectrometer and the control software which was developed by us. The system is agnostic to the programming environment on the mobile device. The only requirement is the availability of the web browser. Currently first batch of measurements is done and we are processing them.

publications

The following list of publications covers only those, which are or were published during participation at the Graduiertenkolleg / PhD program.

Articles in Journals

2011

Conference Papers

201220112009
2012
  • Byshko, R., Dahmen, T., Gratkowski, M., Gruber, M., Quintana, J., Saupe, D., Vieten, M., Woll, A., Sportinformatik 2012, 9. Symposium der Sektion Sportinformatik der Deutschen Vereinigung für Sportwissenschaft vom 12.-14. Sept., Konstanz, Germany, September 2012. Link abstract
  • Byshko, R., Dahmen, T., Gratkowski, M., Gruber, M., Quintana, J., Saupe, D., Vieten, M., Woll, A., Sportinformatik 2012 extended abstracts, 9. Symposium der Sektion Sportinformatik der Deutschen Vereinigung für Sportwissenschaft vom 12.-14. Sept., Konstanz, Germany, September 2012. Link abstract
  • Byshko, R., Li, S., Characterization of iPhone Displays: A Comparative Study, 18. Workshop Farbbildverarbeitung 2012, pp. 49-60, Darmstadt Germany, 2012. abstract
2011
2009