Method and device for automatic correction of geometry, to superpose colors and uniformity of the image for a television camera.

摘要

The device for implementing the method according to the invention comprises, on the one hand, a processor (2) connected by a data line (12) to a correction memory (3), a measuring circuit (9), and to a - analog digital converter (4), and on the other hand, to an adder circuit coupled to the output of the analog converter - (4) and to the output of the scanning circuit of the camera to add to the signal of the sawtooth signal delivered by the camera, the correction values supplied by the memory of the correction in synchronism with the scanning of the camera. The correction values are the result of an evaluation of the position error of the centers of the patterns of an optical pattern reproduced by the camera and their counterparts in a pattern electronic. The values of the intermediate corrections are calculated for each pattern by interpolation errors of the position of the centers of the patterns by means of an interpolation polynomial of the third order. & br / application: high definition television.