Visual A)en,on and Emo,on: Measurement to Insight
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1 Visual A)en,on and Emo,on: Measurement to Insight Dr. Colin Swindells SENG June 2011
2 User Behaviour: Visual AGenHon 2
3 User Behaviour: Visual EmoHon hgp://selectstart.tv/gamer girls/need a wingman dont forget your video game buddies/ 3
4 Outline Visual A)en,on Visual Emo,on 1) Background 1) Background 2) Measurement 2) Measurement 3) Data Processing 3) Data Processing 4) Case Study 4) Case Study 4
5 Eye Tracking Equipment 5
6 Eye Tracking Variables: Gaze 6
7 Eye Tracking Variables: FixaHons Video of laparoscopic surgery 7
8 Meaning from Data Sta,s,cs Visualiza,ons # of fixahons Heatmaps % Hme of eye gaze Tag Sequences correlahons w/ intent Video collages 8
9 Visual FixaHon Stats Example Group Store A Store B Tag Count % Count % Clothing Item DescripHon Poster Price Tag Sales CondiHon Sales PromoHon Salesperson Total
10 Tag Sequence Example 10
11 Heatmap Example 11
12 Case Study 1: DJ Hero Video Game hgp:// 12
13 i) Eye gaze on green string gem c/o Think Eye Tracking 13
14 ii) Misses gem despite looking at the green string 14
15 iii) Gamer misses the beat 15
16 iv) Frustrated with physical game controls 16
17 v) Adjusts the controls for a beger mapping of bugons to guitar strings 17
18 vi) Gamer now looks further along the strings and can predict easier 18
19 User Behaviour: Visual EmoHon hgp://selectstart.tv/gamer girls/need a wingman dont forget your video game buddies/ 19
20 Visual EmoHon Image of seal 20
21 Visual EmoHon Image of injured body 21
22 Visual EmoHon Image of basket 22
23 Visual EmoHon Image of rock climber 23
24 EmoHon Dimensions 2 Rock climber 1 1 Injured body Basket 4 Seal 24
25 Common EmoHon Measurements EMG (electromyograph / muscle tension): Valence ECG (electrocardiograph / heart rate): Arousal Skin Conductance: Arousal MRI (magne,c resonance imaging / brain ac,vity): Valence, Arousal and Dominance EEG (electroencephalograph / brain ac,vity): Valence, Arousal and Dominance 25
26 EmoHon Equipment 1 26
27 EmoHon Equipment 2 27
28 Example Raw Data EMG & SC voltage (uv) EMG C EMG D SC voltage (uv) EMG C EMG D SC voltage (uv) time (s) EMG C D voltage (uv) time (s) EMG C D Mag. of Fourier transform Mag. of Fourier transform time (s) 100 EMG C EMG D SC Frequency (Hz) EMG C D Frequency (Hz) Mag. of Fourier transform Mag. of Fourier transform time (s) 100 EMG C EMG D SC Frequency (Hz) EMG C D Frequency (Hz) 28
29 Example Filtered Data EMG & SC M voltage (uv) Frequency (Hz) SC M voltage (uv) Frequency (Hz) SC voltage (uv) time (s) EMG C D 0 voltage (uv) time (s) EMG C D time (s) time (s) Typical approaches: Fourier transforms into frequency domain Time domain averages, curve fits and peaks Examples: Abs magnitude transformahons (e.g., abs[fft(emg C)] abs[fft(emg D)]) Low pass / Band pass / High pass filters (e.g., Low pass BuGerworth filter) 29
30 Case Study 2: Racing Video Game hgp://youtu.be/ursq3zelsdo c/o Think Eye Tracking 30
31 i) Eye gaze on car cockpit; arousal decreasing 31
32 ii) Crashed into Virgin Megastore sign; eye gaze on sign; arousal increasing 32
33 iii) Visually checking lap Hme; arousal calm; valence posihve 33
34 iv) About to hit wall; visual agenhon on wall; arousal high; valence negahve 34
35 v) Just hit wall; visual fixahon on car; arousal high; valence negahve 35
36 Take Home Points Visual A)en,on can be effechvely measured using eye gaze and visual fixahon tools. Visual Emo,on can be measured using queshonnaires and biometrics. These approaches are effechve Quan,ta,ve ways for measuring user responses to computer displays, and almost everything else a user interacts with. ExecuHon is very important Garbage In, Garbage Out Next steps: Cogni,on in response to visual agenhon and emohons 36
37 Example PublicaHons Mandryk, R. L. and K. M. Inkpen (2004). Physiological Indicators for the EvaluaHon of Co located CollaboraHve Play. ACM Conference on Computer Supported CollaboraHve Work (CSCW), Chicago, IL. Russell, J. A., A. Weiss, et al. (1989). "Affect Grid: A Single Item Scale of Pleasure and Arousal." Journal of Personality and Social Psychology 57(3): Tsang, H.Y., Tory, M., Swindells, C. (2010) eseetrack Visualizing SequenHal FixaHon PaGerns. In Proceedings of InfoVis, TransacHons on VisualizaHon and Computer Graphics 16(6), IEEE. 37
38 Example Companies Eye Tracking Think Eye Tracking Locarna Tobii Emo,on Measurement emsense Thought Technology 38
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