Patent Document ID: 9396393
Application ID: 14298261
Patent Status: 1

Claim One:
1. A method for interest point descriptor and signature generation used in a video sequence fingerprinting process, the method comprising: generating interest point parameter vectors for selected frames of a video sequence having a plurality of video frames, wherein each generated vector contains a set (s x , s y , x, y, pixel maximum value), wherein x, y are coordinates of interest point location, s x is a scale parameter in the x direction, and s y is a scale parameter in the y direction representing a scale pair (s xq , s yr ) at the interest point (x,y) location for a Q by R scale neighborhood, wherein Q and R are integers, xqε{x0,x1,. . .x(Q−1)}, yrε{y0,y1,. . .y(R−1), and the pixel maximum value is determined from a sorting of local pixel maximum vales according to their magnitudes; establishing for each generated vector a rectangular box encompassing a spatial extent, in pixels, of Ns x by Ms y and centered at the interest point (x, y) location assciated with the set (s x , s y , x, y, pixel maximum value), wherein N and M are multiplication factors which determine the size in pixel of a neighborhood around the interest point; and determining for each generated vector a multi-dimensional descriptor and a multi-dimensional signature based on pixels in the rectangular box, wherein a collection of multi-dimensional descriptors and multi-dimensional signatures for the generated vectors of each selected frame of the video sequence comprises a compact representation of the video sequence used in the video sequence fingerprinting process.