| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique of enabling display fully using the dynamic range of display tones without collapse of high-frequency components, and avoiding the display of unnecessary pseudo-components. <P>SOLUTION: A third image signal is generated by multiplying a second image signal constituted by low-frequency components by K (S103). When a fourth image signal obtained by adding the third image signal to a first image signal constituted by high-frequency components falls within a predetermined range, the third image signal is outputted, whereas when the fourth image signal includes a portion exceeding the range, an image signal obtained by correcting the third image signal is outputted (S107). The composition signal of the outputted image signal and the first image signal is generated (S108). A fifth image signal is generated by multiplying the third image signal by a correction amount γ of the third image signal. As a sub-frame of interest, either the composition signal or the fifth image signal is outputted (S109). <P>COPYRIGHT: (C)2011,JPO&INPIT |
