Patent ID: 8903130
Filing Date: 2014-12-02
Classification: G06K,H04N

Abstract:
1. A method of virtual camera operation, the method comprising: identifying a face of a participant in an input video stream; identifying a target region of the face in a first frame of the input video stream and in a second frame of the input video frame; generating speech motion data based on an inter-frame motion value determined from a first histogram, associated with a first frame, and a second histogram, associated with a second frame, the first histogram and the second histogram being based upon a gradient associated with each pixel, of a plurality of pixels, in the target region of the face in each of a first frame of the input video stream and a second frame of the input video stream; determining a speaking state of the participant in the input video stream based on the speech motion data; identifying a subject of the input video stream based on the speaking state; and generating, using a processor, an output video stream including a portion of the input video stream based on the subject.