| 摘要 |
To obtain an interpolating operation apparatus which provides an interpolation image in which the sharpness in kept high and noise due to hue variations is kept small after the interpolating operation.For a primary image signal Sorg (R, G, B) which is inputted into an interpolating operation apparatus 30, R, G, and B color signal components, which represent each of picture elements in a color image represented by an orignal image signal, are converted into YCC luminance and color difference signal components through a first signal conversion means 31. With a cubic spline interpolating operation means 32, an interpolated luminance signal component Y' is obtained with respect to luminance signal components Y. With a B spline interpolating operation means 33, interpolated color difference signal components C1' and C2' are obtained with respect to color difference signal component C1 and C2. Then, the interpolated luminance signal component Y' and the interpolated color difference signal components C1' and C2' are converted into interpolated color signal components R', G', and B' through a second signal conversion means 34, whereby an interpolated image signal S' (R', G', B') is obtained.
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