Patent ID: 7356166
Filing Date: 2008-04-08
Classification: G06T

Abstract:
1. A method for detecting motion and filtering noise, said method comprising: (a) dividing an incoming image into a plurality of blocks; (b) comparing said plurality of blocks to corresponding blocks of a referred image and saving compared results into a declared data structure; (c) marking a compared result that exceeds a first predetermined threshold, whereby a changed block corresponding to said compared result is indicated; (d) grouping said compared result into an adjacent region thereof, whereby changed blocks are regionally grouped together; and (e) calculating a deviation value of said region by computing  and comparing said deviation value to a second predetermined threshold, whereby motion is detected and the noise caused from moire and interference resulted from an area brightness variation is filtered out, where i=0, to n, n represents a quantity of said compared result in said region, x