| 摘要 |
The present invention relates to an image processing method intended for correcting the distortions created by the instability of the high-voltage supply circuit in a cathode-ray tube display device. The corrections are made to the video content of the images to be displayed. They consist in characterizing the image distortions created by the high-voltage supply circuit of the cathode-ray tube, then in determining, for each of the images to be displayed, the distortions affecting them, and finally in generating precorrected images having the reverse distortions. According to the invention, to characterize the distortions created by the high-voltage supply circuit, a model capable of delivering, as a function of the video signal of the images to be displayed, a signal representative of the variations in the output voltage of the high-voltage supply circuit while these images are being displayed.
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