Patent ID: 7194116
Filing Date: 2007-03-20
Classification: G06K

Abstract:
1. A method for acquiring biometric information, the method comprising: generating a plurality of frames representing image data for a finger, wherein each frame is associated with a matrix, the matrix having first and second dimensions, wherein the first dimension corresponds to a first direction, and the second dimension corresponds to a second direction; transferring a first of said plurality of frames to a reconstructed image buffer; for each of the remaining plurality of frames, determining new lines that have moved into each frame compared to lines in said reconstructed image buffer, wherein said determining comprises compensating for variations due to movement error by computing a correlation between a prior frame and a next frame and a correlation between the prior frame and an extracted frame, wherein at least one correlation is derived from an averaged delay from two or more functions computed in the second direction, and wherein said determining further comprises: