At this time, an output frame F0({right arrow over (x)}, n) is defined by the following equation 2: F 0 ( x ??? , n ) = { F ( x ??? , n ) , ( y mod 2 = n mod 2 ) F i ( x ??? , n ) , otherwise ( 2 ) Here, {right arrow over (x)} means a spatial location, and n is a field number.