Patent ID: 8111333

Claim:
A method for correcting Gamma characteristics of a video bit-stream in video communications, the method comprising: receiving, by a receiving terminal, a video bit-stream sent from a transmitting terminal, wherein the video bit-stream comprises video data generated according to a video image of the transmitting terminal, and comprises Gamma characteristic parameter information of the transmitting terminal; restoring the video image according to the video data; and performing Gamma correction for the video image according to Gamma characteristic parameter information of the receiving terminal and the Gamma characteristic parameter information of the transmitting terminal; wherein the Gamma characteristic parameter information of the transmitting terminal comprises Gamma characteristic parameters of each Gamma characteristic element passed by the video image in the transmitting terminal during processes of collecting and processing of the video image as well as forming the video bit-stream, and a cascading sequence of each Gamma characteristic element; or equivalent Gamma characteristic parameters determined by the transmitting terminal according to all the Gamma characteristic elements that are passed.