Detection of image spam
US7817861B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2006 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jul 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L51/212
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of detecting spam images in electronic objects such as emails includes compressing images extracted from the electronic object into a common representation using a lossy compression function and determining if the compressed forms of the extracted images are identical to the compressed form of any known spam image from a corpus of known spam images, which compressed forms are the known spam images compressed into the common representation using the lossy compression function. The electronic objects are signalled as embedding a spam image on the basis of a compressed form of an extracted image extracted from an electronic object being determined to be identical to the compressed form of a known spam image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.