| 摘要 |
In a color-noise reduction circuit in which a color-difference signal of a target pixel is substituted in a random substitution circuit 104 by a color-difference signal of another pixel within an area including the target pixel, a pixel-substitution color-difference signal that is the substituted signal whose high-frequency components are removed in an LPF 106 and the color-difference signal of the target pixel are added together in a summation circuit 108 at a predetermined ratio obtained by a pixel-substitution utilization rate calculation circuit 107 , and is outputted as a noise-reduced color-difference signal of the target pixel. Therefore, efficient color-noise reduction and suppression of occurrence of color jitters can be realized.
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