Multipoint tracking method and related device
US8135171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2008 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Jan 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2203/04808
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Multipoint tracking is performed by receiving raw data of an image, calculating line average values for a plurality of lines of the raw data, filtering the raw data according to the line average values to generate filtered data, performing a dilation algorithm on the filtered data to generate dilated data, performing an erosion algorithm on the dilated data to generate eroded data, performing edge detection on the eroded data for identifying touch regions of the raw data, performing a labeling algorithm on the touch regions, calculating centers of gravity for the touch regions, and generating a multipoint tracking result according to the centers of gravity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.