Patent ID: 8180171
Filing Date: 2012-05-15
Classification: G06T,H04N

Abstract:
1. A noise cancellation device for an image signal processing system comprising: a receiving end for receiving an image signal; a 3D (three-dimensional) filtering unit coupled to the receiving end for adjusting a filtering parameter according to a motion estimation value, and filtering the image signal and a former filtering result for generating a current filtering result; an motion detection unit coupled to the receiving end and the 3D filtering unit for comparing the former filtering result and the image signal received by the receiving end, so as to generate a current motion factor and the motion estimation value according to a former motion factor; an memory unit coupled to the 3D filtering unit and the motion detection unit for receiving and storing the current filtering result outputted from the 3D filtering unit and the current motion factor outputted from the motion detection unit, and outputting the stored current filtering result and the stored current motion factor to the 3D filtering unit and the motion detection unit as the former filtering result and the former motion factor for a next image signal; and an output end coupled to the 3D filtering unit and the memory unit for outputting the current filtering result provided by the 3D filtering unit.