Patent ID: 7949175

Claim:
A method for detection of configurations of miniature security marks (MSMs) within documents and images, wherein the MSMs are in a form of dispersed MSMs the method comprising: sub-sampling a received image, wherein said received image comprises a digital representation of at least one possible recipient of the dispersed MSMs, wherein said sub-sampling generates a reduced-resolution image of said received image, and wherein each of said dispersed MSMs is comprised of a plurality of scattered dots; detecting maximum/minimum points; grouping said maximum/minimum points into at least one cluster according to location distances between said maximum/minimum points; checking group configuration to match said at least one cluster with a pre-defined template configuration; and performing dot parameter verification to verify mark location and mark configuration between said received image and a pre-defined template dot specification, wherein said mark configuration comprises at least one dispersed MSM, wherein said pre-defined template dot specification comprises a description of said plurality of scattered dots, wherein said description includes at least one member selected from the group comprising dot size, the number of said dots in said MSM, and relative dot position.