Pherogenic Drawings

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Presentation of the paper "Pherogenic Drawings: Generating Colored 2-Dimensional Abstract Representations of Sleep EEG with the KANTS Algorithm". ECTA 2012, Barcelona, Spain.

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Pherogenic Drawings

  1. 1. GENERATING COLORED 2-DIMENSIONAL ABSTRACTREPRESENTATIONS OF SLEEP EEG WITH THE KANTS ALGORITHM Carlos M. Fernandes1,2 Antonio M. Mora1 J.J. Merelo1 Agostinho C. Rosa21 Department of Computers Architecture and Technology, University of Granada, Spain 2 LaSEEB-ISR-IST, Technical Univ. of Lisbon (IST), Portugal
  2. 2. Swarm paintings by Leonel Moura  a subfield of generative art that uses swarm intelligence systems for creative purposes 2ECTA 2012, Barcelona, Spain
  3. 3. Basic concept: an ant-based stigmergy, commu algorithm for nication via the cluster analysis. environment. Main contribution: the swarm is the set of data samples 3ECTA 2012, Barcelona, Spain
  4. 4. o Swarm: data samples o Habitat: grid of cells o Each cell is a vector with the same cardinality as the data samples vectors. o Rule 1: ants move towards regions where environmental (grid) vectors are more similar to the vector they carry. o Rule 2: update grid vector. o Rule 3: evaporation. 4ECTA 2012, Barcelona, Spain
  5. 5. Rule 2: update vectorsRule 3: Evaporation Please note parameters β and δ. They define how the ants move.Rule 1: Move D. Chialvo and M. Millonas, How Swarms Build Cognitive Maps, 1995 5
  6. 6. Result: similar ants/data samples tend to cluster. Example: Iris data set (quantifies the red: Setosa morphologic variation of Iris flowers of green: Versicolor three related species) blue: Virginica t=0 t=50 t=100 t=150 6ECTA 2012, Barcelona, Spain
  7. 7. 1000 iterations 7ECTA 2012, Barcelona, Spain
  8. 8. Visualize the grid and see how the data samples have “shape” the grid/habitat. ? Translate to data grid of RGB samples KANTS vectors T iterations 8ECTA 2012, Barcelona, Spain
  9. 9. 9ECTA 2012, Barcelona, Spain
  10. 10. o Sleep data from Electroencephalogram (EEG) . o Hjorth parameters describe sleep EEG with three-variable vectors. o Translation to RGB is trivial and direct. o The images are representations of a person’s sleep. o Each person and each person’s night sleep generates a different image: fingerprints of sleep. 10ECTA 2012, Barcelona, Spain
  11. 11. EEG Hjorth K A N T S activity complexity mobility 11ECTA 2012, Barcelona, Spain
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  15. 15. 500 500 p01 p02 400 400 number of samples 300 300 200 200 100 100 0 0 1 2 3 4 5 6 1 2 3 4 5 6 classes classes 500 500 p03 p04 400 400 number of samples 300 300 200 200 100 100 0 0 1 2 3 4 5 6 1 2 3 4 5 6 classes classes 15ECTA 2012, Barcelona, Spain
  16. 16. [1] Ramos, V., Almeida, F. 2000. Artificial Ant Colonies in Digital Image Habitats: a Mass Behaviour Effect Study on Pattern Recognition. In Proceedings of the 2nd International Workshop on Ant Algorithms, M. Dorigo et al., Eds., 113-116. [2] Fernandes, C.M. 2010. Pherographia: Drawing by Ants. Leonardo 43(2), 107-112. 16ECTA 2012, Barcelona, Spain
  17. 17. 17ECTA 2012, Barcelona, Spain
  18. 18. Bern and Hilla Becher, FRAMEWORK HOUSES Carlos M. Fernandes, Pherographic synthesis of the Bechers’ Framework Houses 18ECTA 2012, Barcelona, Spain
  19. 19. Extract the data samples (three-variable RGB vectors) directly from a coloured image and then use these samples as KANTS output. Data samples= KANTS list of RGB vectors Grid 19ECTA 2012, Barcelona, Spain
  20. 20. A swarm art project
  21. 21. 21ECTA 2012, Barcelona, Spain
  22. 22. 22ECTA 2012, Barcelona, Spain
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  25. 25. 25ECTA 2012, Barcelona, Spain
  26. 26. Evolutionary Art, Design, and Creativity Competition Genetic and Evolutionary Computation Conference (GECCO) Philadelphia, USA, 2012 http://eadcc.sigevolution.org/ 26ECTA 2012, Barcelona, Spain
  27. 27. o The idea/concept. o The ants/samples that shape the environment (canvas). o The original data (paintings). o “Reinterpretation” of the original (abstract) works: ABSTRACTING THE ABSTRACT 27ECTA 2012, Barcelona, Spain
  28. 28. o The algorithm has a creative potential. o We have proposed two artworks with different characteristics. o Study other forms of representation when the cardinality of the vectors is >3 o 4-variables: maybe 3-dimensional representations. o Many variables. How to represent them? 28ECTA 2012, Barcelona, Spain
  29. 29. Questions? 29ECTA 2012, Barcelona, Spain

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