RIGHT-TO-SPEAK BASE ENCODING METHOD FOR A VIDEO CONFERENCING SYSTEM TO GUARANTEE THE IMAGE QUALITY OF A TERMINAL IMAGE WHICH ACQUIRES A RIGHT-TO-SPEAK PREFERENTIALLY

摘要

PURPOSE: A right-to-speak base encoding method can offer a weighted value on each macroblock differentially and perform encoding, guaranteeing quality of a terminal image.;CONSTITUTION: A video conference media server receives right to speak information and layout information from a video conference control server (S10) The video conference media server sets a weight value to a macroblock based on right-to-speak information and layout information and changes an encoding method (S20, S30, S40) The video conference media server encodes an image inputted from a terminal according to an encoding method and transmits it to a terminal (S60). An encoding method assigns different QP (quantization parameter) to a macroblock according to the fixed weight value. The video conference media server sets up a differential weight value on a macroblock to form a concentric circle based on the center of an image as a reference point.;COPYRIGHT KIPO 2013;[Reference numerals] (AA) Start; (BB) End; (S10) Receive information about a right to speak and information about a layout; (S20) Set a reference point with the image of a device with the right to speak being at the center; (S30) Set a weight vale of a macro block; (S40) Change an encoding method; (S50) Perform an encoding process; (S60) Transmit the encoded image