The haloed line effect for hidden line elimination.

Appel, Arthur; Rohlf, F. James; Stein, Arthur J.

doi:10.1145/800249.807437

Cited by 49 publications

(29 citation statements)

References 8 publications

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“…Such techniques include the use of visibility information [1,19] as well as the use of halos [2,11], the illustration method we also use in our own work. Halos, however, can not only be used in line rendering but have been applied in more traditional visualization techniques based, e. g., on line integral convolution [16] or volume rendering [5] to enhance depth perception.…”

Section: Illustrative Visualization and Rendering Techniquesmentioning

confidence: 99%

“…In the areas of non-photorealistic rendering (NPR) and illustrative visualization, however, abstraction and emphasis techniques have been investigated. Examples include the use of halos for simple line rendering [2,11] or shading [22,37] and volume rendering [5], the use of additional depth cueing by influencing line or shading parameters (e. g., [11]), interactive emphasis techniques (e. g., [27,35,41]), or focus+context techniques (e. g., [13,39]). …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Depth-Dependent Halos: Illustrative Rendering of Dense Line Data

Everts

Bekker

Roerdink

et al. 2009

IEEE Trans. Visual. Comput. Graphics

111

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Abstract-We present a technique for the illustrative rendering of 3D line data at interactive frame rates. We create depth-dependent halos around lines to emphasize tight line bundles while less structured lines are de-emphasized. Moreover, the depth-dependent halos combined with depth cueing via line width attenuation increase depth perception, extending techniques from sparse line rendering to the illustrative visualization of dense line data. We demonstrate how the technique can be used, in particular, for illustrating DTI fiber tracts but also show examples from gas and fluid flow simulations and mathematics as well as describe how the technique extends to point data. We report on an informal evaluation of the illustrative DTI fiber tract visualizations with domain experts in neurosurgery and tractography who commented positively about the results and suggested a number of directions for future work.

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Section: Illustrative Visualization and Rendering Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Depth-Dependent Halos: Illustrative Rendering of Dense Line Data

Everts

Bekker

Roerdink

et al. 2009

IEEE Trans. Visual. Comput. Graphics

111

View full text Add to dashboard Cite

show abstract

“…Burns et al presented a technique to extract contour lines from volumetric data [2005]. We incorporate this technique and extend it by introducing the haloed line effect presented by Appel et al [1979], as the halos emitted by the lines are expected to help solving the ambiguity of T and Xjunctions [Thompson et al 2011, p. 258].…”

Section: Evaluated Techniquesmentioning

confidence: 99%

Evaluating the perception of semi-transparent structures in direct volume rendering techniques

Englund

Ropinski²

2016

SIGGRAPH ASIA 2016 Symposium on Visualization

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Direct volume rendering (DVR) provides the possibility to visualize volumetric data sets as they occur in many scientific disciplines. A key benefit of DVR is that semi-transparency can be facilitated in order to convey the complexity of the visualized data. Unfortunately, semi-transparency introduces new challenges in spatial comprehension of the visualized data, as the ambiguities inherent to semi-transparent representations affect spatial comprehension. Accordingly, many visualization techniques have been introduced to enhance the spatial comprehension of DVR images. In this paper, we conduct a user evaluation in which we compare standard DVR with five visualization techniques which have been proposed to enhance the spatial comprehension of DVR images. In our study, we investigate the perceptual performance of these techniques and compare them against each other to find out which technique is most suitable for different types of data and purposes. In order to do this, a large-scale user study was conducted with 300 participants who completed a number of micro-tasks designed such that the aggregated feedback gives us insight on how well these techniques aid the end user to perceive depth and shape of objects. Within this paper we discuss the tested techniques, present the conducted study and analyze the retrieved results.

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“…In our implementation we taper the shadows down to a thickness of 0.0 near junctions so as the accommodate the rendering of branches very close together. Last, glowing halos [ARS79,IG98] can be created by changing the shadow color to a non-grayscale value; they provide an eye-catching visual effect.…”

Section: Silhouettes Shadows and Halosmentioning

confidence: 99%

Illustrative Parallel Coordinates

McDonnell

Mueller

2008

Computer Graphics Forum

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Illustrative parallel coordinates (IPC) is a suite of artistic rendering techniques for augmenting and improving parallel coordinate (PC) visualizations. IPC techniques can be used to convey a large amount of information about a multidimensional dataset in a small area of the screen through the following approaches: (a) edge-bundling through splines; (b) visualization of "branched " clusters to reveal the distribution of the data; (c) opacity-based hints to show cluster density; (d) opacity and shading effects to illustrate local line density on the parallel axes;and (e) silhouettes, shadows and halos to help the eye distinguish between overlapping clusters. Thus, the primary goal of this work is to convey as much information as possible in a manner that is aesthetically pleasing and easy to understand for non-experts.

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The haloed line effect for hidden line elimination.

Cited by 49 publications

References 8 publications

Depth-Dependent Halos: Illustrative Rendering of Dense Line Data

Depth-Dependent Halos: Illustrative Rendering of Dense Line Data

Evaluating the perception of semi-transparent structures in direct volume rendering techniques

Illustrative Parallel Coordinates

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