| 摘要 |
<p>The correction consists in correcting the overall luminance, whilst retaining the original chromaticity of the analysed picture. For this purpose, the device according to the invention comprises a correcting circuit receiving the colour signals Ve1, Ve2 and Ve3 and supplying corrected colour signals, a matrixing circuit supplying the overall luminance signal Ve, and a control circuit calculating eight transfer parameters defining the transfer function F, which transforms the signal Ve into a signal F(Ve) covering the scale of luminances in accordance with an equal distribution in order to satisfy the optimum vision conditions. The control circuit processes the signal < IMG > and the correcting circuit supplies corrected colour signals respectively corresponding to the products Ve1 ? < IMG >, Ve2 ? < IMG > and Ve3 ? < IMG > ?</p> |
