A high frequency component detector detects a high frequency component of an R signal. A high frequency component comparator outputs a flag indicating a threshold value division range having the highest threshold value including a value of a high frequency component in a specific period. A gain calculating unit calculates a ratio as a gain, the ratio set according to the threshold value division range indicated by the flag input. A multiplying unit multiplies the R signal and the gain to generate an object signal R′ wherein a concavity and convexity difference with adjacent pixels in a small region of an image is suppressed compared to the R signal.
Depth estimation data generating apparatus, depth estimation data generating method, and depth estimation data generating program, and pseudo three-dimensional image generating apparatus, pseudo three-dimensional image generating method, and pseudo three-dimensional image generating program