Point relocation for digital ink curve moderation
US9396566B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2015 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Oct 21, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/048
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
With some splines, such as cardinal splines, irregularly spaced data points may cause undesired bumps. Bump moderation makes a spline curve more visually appealing by reducing bumps, and by doing so even if the curve happens to be already smooth in a mathematical sense. Data points P1, P2, and P3 are not suitably spaced an outlier is present in a set of linear distances between the points. The bump is moderated by moving a point of the spline along a pathway to a position for which the data points P1, P2, and P3 are suitably spaced. The pathway may be a Bezier segment or a line segment. A point is moved on the pathway to its midpoint, or to a particular portion of the pathway such as its central third or central fifth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.