Method and apparatus for measuring similarity using matching pixel count
US7333651B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1999 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Apr 13, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stereo disparity between a reference image and a search image for a reference pixel in the reference image is determined by (a) calculating a similarity measure between a reference window including a set of pixels centering on the reference pixel and each of a group of search windows in the search image which is of a same shape with the reference window and displaced from the reference window within a predetermined search range, wherein a matching pixel count, which is the number of pixels in the reference window which are similar in intensity to corresponding pixels in a search window, is used as the similarity measure between the reference window and the search window; and (b) determining a displacement between the reference window and a search window which yields a largest similarity measure as the stereo disparity for the reference pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.