Patent ID: 7489337
Filing Date: 2009-02-10
Classification: H04N

Abstract:
1. A method for adjusting a colorimetric rendering of a display surface, said display surface including at least one pair of adjacent display screens, each controlled by a video processing system through which a corresponding video stream passes for each pair of adjacent display screens, the method comprising: receiving image data of images in the video stream displayed on a separation area located between two screens of each pair of adjacent display screens, wherein the image data comprises colorimetric measurements for each screen in each pair of adjacent display screens, and wherein the colorimetric measurements are taken from measurement areas distributed symmetrically on each side of the separation area; periodically sampling the image data; analyzing the image data sampled in each period to determine a difference in colorimetric rendering between the two screens in the pair of adjacent display screens; and applying a correction law, based on the difference in colorimetric rendering, to the images in the video stream of one of two video processing systems controlling the pair of adjacent display screens.