Patent ID: 8723969

Claim:
A method of obtaining stable video images of a scene using a video camera, said method comprising: receiving a first source frame and a second source frame, wherein said first source frame and said second source frame respectively represent a first image and a second image of a scene captured at different time instances; generating a first subsampled frame from a first set of pixels in said first source frame and a second subsampled frame from a second set of pixels in said second source frame; computing a displacement of said second image relative to said first image; refining said displacement by searching a plurality of pixel locations within said first and second sets of pixels in said first and second source frames for a correspondence to said first and second subsampled frames; determining if said displacement is an intentional displacement by checking whether said sequence of displacements follows a uniform pattern; and shifting said second source frame by an opposite of said displacement when said sequence of displacements does not follow a uniform pattern.