IMAGE INTERPOLATION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an image interpolation device capable of obtaining the high definition one as an image after interpolation. SOLUTION: In the case that strongest correlation is present in a diagonal direction H3, at the time of defining the signs (+, - or 0) of differences A(-1)-A(-2) and B(1)-B(0) between two input pixels A(-1) and B(1) facing each other across an interpolation pixel X in the diagonal direction H3 and the input pixels A(-2) and B(0) adjacent in the left direction of the respective two pixels respectively as (a) and c and defining the signs of the differences A(-1)-A(0) and B(1)-B(2) between the input pixels A(-1) and B(1) and source pixels A(0) and B(2) adjacent in the right direction of the respective two pixels respectively as (b) and (d), when the condition of a=c or b=d is satisfied, the interpolation is performed in the diagonal direction H3 where the strongest correlation is present.