Posted: February 26th, 2022

Mark Embellishments Paper Report

Guidelines of Visible Encoding

No unjus3fied 3D: Energy of the aircraft

•  high-ranked spa3al posi3on channels: planar spa3al posi3on – not depth!

No unjus3fied 3D: Hazard of depth •  we don’t actually dwell in 3D: we see in 2.05D •  purchase extra information on picture aircraft rapidly from eye actions –purchase extra information for depth slower, from head/physique mo3on

Occlusion hides informa3on

•  Occlusion •  interac3on complexity

[Distor(onViewingTechniques for 3D Data.Carpendale et al.InfoVis1996.]

Perspec3ve distor3on loses informa3on

•  perspec3ve distor3on – interferes with all measurement channel encodings – energy of the aircraft is misplaced!

[Visualizing the Results of Mul(mediaWeb Search Engines. Mukherjea, Hirata, and Hara. InfoVis 96]

Tilted textual content isn’t legible

•  textual content legibility •  far worse when 3lted from picture aircraft

[Visualizing the World- Wide Web with the Naviga(onal View Builder. Mukherjea and Foley. Computer Networks and ISDN Systems, 1995.]

No unjus3fied 3D instance : Timeseries knowledge

•  extruded curves: detailed comparisons unimaginable

[Cluster and Calendar based Visualiza(on of Time Series Data. van Wijk and van Selow, Proc. InfoVis 99.]

No unjus3fied 3D instance : Remodel for brand new knowledge abstrac3on

•  derived knowledge: cluster hierarchy •  juxtapose mul3ple views: calendar, superimposed 2D curves

Jus3fied 3D: form percep3on

•  advantages outweigh prices when process is form percep3on for 3D spa3al knowledge

•  interac3ve naviga3on helps synthesis throughout many viewpoints

[Image-Based Streamline Genera(on and Rendering. Li and Shen. IEEE Trans. Visualiza(on and Computer Graphics (TVCG) 13:3 (2007), 630–640.]

No unjus3fied 3D •  3D legi3mate for true 3D spa3al knowledge •  3D wants very cautious jus3fica3on for summary knowledge –  enthusiasm in 1990s, however now skep3cism –  be particularly cautious with 3D for level clouds or networks

[WEBPATH-a three dimensional Web history. Frecon and Smith. Proc. InfoVis 1999]

No unjus3fied 2D •  contemplate whether or not community knowledge requires 2D spa3al format –  particularly if studying textual content is central to process!

–  arranging as community means decrease informa3on density and more durable label lookup in comparison with textual content lists

•  advantages outweigh prices when topological construction/context essential for process –  be particularly cautious for search outcomes, doc collec3ons, ontologies

Eyes beat reminiscence •  precept: exterior cogni3on vs. inner reminiscence

–  straightforward to check by transferring eyes between side-by-side views –  more durable to check seen merchandise to reminiscence of what you noticed

•  implica3ons for anima3on –  nice for choreographed storytelling –  nice for transi3ons between two states –  poor for a lot of states with modifications all over the place

•  contemplate small mul3ples as a substitute

Eyes beat reminiscence instance: Cerebral

•  small mul3ples: one graph occasion per experimental condi3on –  similar spa3al format –  colour otherwise, by condi3on

[Cerebral:Visualizing Mul(ple Experimental Condi(ons on a Graph with Biological Context. Barsky, Munzner, Gardy, and Kincaid. IEEE Trans. Visualiza(on and Computer Graphics (Proc. InfoVis 2008) 14:6 (2008), 1253–1260.]

Why not anima3on? •  disparate frames and

areas: comparability tough –  vs con3guous frames –  vs small area –  vs coherent mo3on of group

•  change blindness –  even main modifications tough to no3ce if psychological buffer wiped

•  protected particular case –  animated transi3ons

Resolu3on beats immersion •  immersion usually not useful for summary knowledge

–  don’t want sense of presence or stereoscopic 3D •  resolu3on rather more essential

–  pixels are the scarcest useful resource –  desktop even be[er for workflow integra3on

•  virtual reality for abstract data very difficult to jus3fy

[Development of an informa(on visualiza(on tool using virtual reality. Kirner and Mar(ns. Proc. Symp.Applied Compu(ng 2000]

Overview first, zoom and filter, particulars on demand

•  influen3al mantra from Shneiderman [The Eyes HaveIt:ATask by DataTypeTaxonomy for Informa(onVisualiza(ons. Shneiderman. Proc. IEEE Visual Languages, pp. 336–343, 1996.]

•  overview = abstract – microcosm of full vis design drawback

•  Nuances – past simply two ranges: mul3-scale construction – tough when scale enormous: quit on overview and browse native neighborhoods?

[Search, Show Context, Expand on Demand: Suppor(ng Large Graph Explora(on with Degree-of-Interest. van Ham and Perer.IEEETrans.Visualiza(on and Computer Graphics (Proc.InfoVis 2009) 15:6 (2009), 953–960.]

Func3on first, kind subsequent

•  begin with give attention to func3onality – straigh`orward to enhance aesthe3cs in a while, as refinement

– if no exper3se in-house, discover good graphic designer to work with

•  harmful to start out with aesthe3cs – often unimaginable so as to add func3on retroac3vely

Artery Visualiza3ons for Coronary heart Illness Analysis

HemoViz: Design research + evalua3on

•  forma3ve research with consultants –  process taxonomy

•  HemoViz design •  deploy a[empt fails

–  experts balk: demand 3D and rainbows

•  quan3ta3ve user study –  med students, real data –  91% with 2D/diverging vs 39% with 3D/ rainbows

–  experts willing to use

[Fig 1. Borkin et al. Artery Visualiza(ons for Heart Disease Diagnosis. Proc InfoVis 2011.]]

Research Outcomes: Error

Research Outcomes: Time

Cri3que •  many strengths

–  cautious and properly jus3fied design, convincing human-subjects experiment • bringing visualiza3on greatest prac3ces to medical area

•  Limita3on –  paper doesn’t clearly talk why colormap is diverging not sequen3al

•  reply by electronic mail •  medical doctors care about extraordinarily excessive and intensely low ESS (scalar) values

–  excessive values (prime of scale, darkish gray): excessive blood stream pa[erns could relate to coronary heart malfunc3ons – however not imminently life threatening and do not point out plaque loca3ons

–  low values (bo[om of scale, darkish purple): very diseased areas with a number of plaque, docs care lots! – a lot debate from medical doctors on the place is boundary between “regular” and “low” ESS values •  most suppose under three Pa are indica3ve of illness however many argue different values within the 2-Four vary. •  all docs agree that values under 2 Pa are more and more harmful illness ranges. •  thus map has transi3on at three Pa for the diverging level and really purple under 2 Pa

•  why con3nuous not segmented? –  medical doctors acquire large perception by seeing the refined pa[erning of the ESS values –  par3cularly various values in purple area – pa[erns Help them perceive illness development

and severity •  particularly helpful for deciding what kinds of interven3ons to prescribe for the pa3ent

Additional Studying

•  Exploring and Decreasing the Results of Orienta(on on Textual content Readability in Volumetric Shows. Grossman et al. CHI 2007

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