| 摘要 |
An image-processing unit ( 300 ) for transforming pixel values of a first video signal (Video 1 ) into respective pixel values of a second video signal (Video 2 ), on basis of the luminance-to-light transfer characteristic of a display device is disclosed. The image-processing unit ( 300 ) comprises: a band-split filter ( 302 ) for band-splitting the first video signal (Video 1 ) into a first high-frequent signal (HF 1 ) and a first low-frequent signal (LF 1 ); a first pixel value transformation unit ( 304 ) for transforming the first high-frequent signal (HF 1 ) into a second high-frequent signal (HF 2 ) on basis of a first transfer function; a second pixel value transformation unit for transforming the first low-frequent signal (LF 1 ) into a second low-frequent signal (LF 2 ) on basis of a second transfer function which is different from the first transfer function; and a combining unit ( 308 ) for combining the second high-frequent signal (HF 2 ) and the second low-frequent signal (LF 2 ) into the second video signal (Video 2 ).
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