| 摘要 |
<p>In the method and picture signal processor for processing a first picture to be reproduced on a color picture tube , the value eys (12) of luminance signal for a shadow S of a second picture, which has been obtained from a preceding scanning operation (11), is subtracted (13) from the value ey (10) of luminance signal for a desired pixel P out of video signals received, thereby determining the value ep of a base luminance signal. Luminance signal values es and eh (15) are set respectively for a shadow S and a highlight H among pixels of the first picture to be reproduced on the color picture tube (14). The value eq (13) of a luminance signal for a pixel Q, which corresponds to the pixel P and is to be reproduced, is determined from the signal values ep, es and eh in accordance with a particular correction formula. The luminance of each pixel, which is to be reproduced on the color picture tube, is adjusted (13) in accordance with the value eq of the corresponding luminance signal thus determined.</p> |
