FAST RENDERING OF QUADRICS AND MARKING OF SILHOUETTES THEREOF

Japanese Patent JP2018106712

A

PROBLEM TO BE SOLVED: To provide rendering of quadrics.SOLUTION: Described embodiments include an apparatus that includes a display, including a screen, and a processor. The processor is configured to define a bounding region on the screen. The processor is further configured to render a quadric, which is defined in a parameter space, over a three-dimensional electroanatomical map of a surface of a heart that is displayed on the screen. This rendering is by, for each pixel in the bounding region, transforming, to the parameter space, a virtual ray that passes through the pixel, and ascertaining whether a point of intersection between the transformed virtual ray and the quadric exists in the parameter space, and, for each pixel in the bounding region for which the point of intersection exists, rendering the pixel on the screen, on the basis of properties of the point of intersection. Other embodiments are also described.SELECTED DRAWING: Figure 1

BENJAMIN COHEN
NATAN SHARON KATZ
LIOR ZAR

JP2017243629A

July 05, 2018

December 20, 2017

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BIOSENSE WEBSTER ISRAEL LTD

G06T15/06; A61B5/044; A61B18/12; A61B34/10

JP2018106711A

2018-07-05

SIGG, CHRISTIAN ET AL.: "GPU-Based Ray-Casting of Quadratic Surfaces", EUROGRAPHICS SYMPOSIUM ON POINT BASED GRAPHICS, JPN6021030168, 29 July 2006 (2006-07-29), pages 59 - 65, ISSN: 0004566507
"カテーテルアブレーションの適応と手技に関するガイドライン", 循環器病の診断と治療に関するガイドライン, JPN6021030167, 2012, ISSN: 0004566508

Konobu Kato
Takafumi Oshima

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