Patent ID: 8150162
Filing Date: 2012-04-03
Classification: G06K

Abstract:
1. A handwriting recognition system, comprising: an input device including a three-dimensional (3D) motion detection sensor that is configured to generate 3D motion data in response to a 3D motion; and a recognition device, in communication with the input device, that is configured to receive the 3D motion data and derive corresponding two-dimensional (2D) images for handwriting recognition wherein a proper 2D projection plane is derived, using the 3D motion data, for each word or character; said proper 2D projection plane is where a sum of the distance square of each 3D sampling point is minimal, wherein the sum of the distance square is determined using a predetermined algorithm and a predetermined number of 3D sampling points and their respective distances to the 2D projection plane; and wherein the recognition device is further configured to dynamically adjust the sampling rate of the 3D motion data based on the speed of the 3D motion.