English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this paper, we present an interactive approach for intuitively editing colors and opacity values in transfer functionsfor volume visualization. We introduce the concept of a relative visibility histogram, which represents thedifference between the global visibility distribution across the full volume and the local visibility distributionwithin a user-selected region in the viewport. From this measure, we can infer what subset of the 3D volume theuser intends to select when they click on a region in the 2D rendered image of the data set, and use this to modifyrelevant parts of the transfer function. We use this selection mechanism for two alternative purposes. The first isto allow output-driven editing of the transfer function, whereby a user can change the opacity values and colorsof features without directly having to manipulate the transfer function itself. The second is to extract visuallydominant features in any user-selected region of interest, so that the user may individually edit their appearanceand then merge these to create new transfer functions. Our approach is lightweight compared to similar techniquesand performs in real-time.

Intuitive Transfer Function Editing Using Relative Visibility Histograms