Teaching:TUW - UE InfoVis WS 2005/06 - Gruppe G3 - Aufgabe 1 - Preattentive Processing: Difference between revisions
No edit summary |
No edit summary |
||
Line 6: | Line 6: | ||
= Preattentive Features = | = Preattentive Features = | ||
[[Image:Features.jpg]] | [[Image:Features.jpg]] | ||
Figure 1: A list of two-dimensional features that “pop out” during visual search, and a list of authors who describe preattentive tasks performed using the given feature. [Healey et al., 1996] | Figure 1: A list of two-dimensional features that “pop out” during visual search, and a list of authors who describe preattentive tasks performed using the given feature. [Healey et al., 1996] | ||
Line 15: | Line 15: | ||
{|style=width:75%" | {|style=width:75%" | ||
[[Image:Preattantive_1.jpg]] | [[Image:Preattantive_1.jpg]] <br> | ||
Figure 2: Detecting the Red Object preattentively. [Chipman, 1996] One visual variable is very easy to find it. | Figure 2: Detecting the Red Object preattentively. [Chipman, 1996] One visual variable is very easy to find it. |
Revision as of 16:14, 10 November 2009
Preattentive Processing
Preattentive Features
Figure 1: A list of two-dimensional features that “pop out” during visual search, and a list of authors who describe preattentive tasks performed using the given feature. [Healey et al., 1996]
Examples
Figure 2: Detecting the Red Object preattentively. [Chipman, 1996] One visual variable is very easy to find it. Figure 4: Examples of two target detection tasks: (a) target can be detected preattentively because it possess the feature “filled”; (b) target cannot be detected preattentively because it has no visual feature that is unique from its distractors. [Healey et al., 1996]
Figure 3: Detecting the Circle preattentively.[Chipman, 1996] It is more difficult but still preantentiv. |
Figure 5: Region segregation by form and hue: (a) hue boundary is identified preattentively, even though form varies randomly in the two regions; (b) random hue variations interfere with the identi- fication of a region boundary based on form. [Healey et al., 1996] |
Conclusion
Any visual processing of that item prior to the act of selection can be called “preattentive”.[Wolfe, Treisma, 2003] Preattentive processing can help to rapidly draw the focus of attention to a target with a unique visual feature (i.e., little or no searching is required in the preattentive case). [Healey, 2005]
Ressources
- [Kosara et al., 2002] Robert Kosara, Silvia Miksch, Helwig Hauser. Focus+Context Taken Literally IEEE Computer Graphics & Applications (CG&A), Special Issue on Information Visualization, 22(1), pages 22-29. Created at: January/February, 2002. http://www.kosara.net/papers/Kosara_CGA_2002.pdf .
- [Healey et al., 1996] Healey, C. G., Booth, K. S., and Enns, J. T.. High-Speed Visual Estimation Using Preattentive Processing. ACM Transactions on Human Computer Interaction 3(2), pages 107-135, Created at: 1996. http://www.csc.ncsu.edu/faculty/healey/download/tochi.96.pdf .
- [Wolfe, Treisma, 2003] Jeremy M Wolfe, Anne Treisma. What shall we do with the preattentive processing stage: Use it or lose it?, Todd S Horowitz poster presented at the Third Annual Meeting of the Vision Sciences Society. Sarasota. Created at: May, 2003. http://search.bwh.harvard.edu/links/talks/VSS03-JMW.pdf .
- [Healey, 2005] Christopher G. Healey. Perception in Visualization. Department of Computer Science, North Carolina State University. Created at: May, 2005. http://www.csc.ncsu.edu/faculty/healey/PP/index.html#Tri_Cog_Psych:80 .
- [Chipman, 1996] Gene Chipman. Review of High Speed Visual Estimation Using Preattantive Processing (Healy, Booth and Enns). Created at: 1996, Accessed at: November 05, 2009. http://www.cs.umd.edu/class/spring2002/cmsc838f/preattentive.ppt#267 .
- [Treisman, 1985] A. Treisman. Preattentive processing in vision. Computer Vision, Graphics, and Image Processing, 31:156–177, 1985.
- [Ware, 2000] C. Ware. Information Visualization: Perception for Design. Morgan Kaufmann Publishers, 2000.