| 摘要 |
PROBLEM TO BE SOLVED: To provide a video signal processing apparatus and a video signal processing method, capable of executing luminance control appropriate to practical use by applying frequency conversion processing to histogram data with a conversion parameter which can designate the histogram data, respectively to each of luminance levels so that the control range of gradation correction processing applied to the luminance can be varied flexibly. SOLUTION: The video signal processing apparatus includes a means 42c for acquiring histogram data of each luminance level from an input luminance signal for one frame; a means 42d for applying frequency conversion processing to the acquired histogram data, on the basis of the conversion parameter which can designate the histogram data to each luminance level; a means 42f for generating a table used for applying nonlinear correction processing to the input luminance signal, on the basis of the histogram data subjected to frequency conversion; and a means 42b for applying the nonlinear correction processing to the input luminance signal, on the basis of the generated table. COPYRIGHT: (C)2007,JPO&INPIT
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