Patent ID: 6987893

Claim:
An image interpolating method comprising: a step (a) of searching an edge direction to be used for interpolation by a pixel matching using input pixels; and a step (b) of generating a pixel to be substantially interpolated by referring to pixels located on the searched edge direction, wherein the step (b) interpolates an input image twice in a vertical direction using the following formula: f ^ ⁡ ( m , n ′ ) = { f ⁡ ( m , n ′ 2 ) , when ⁢ ⁢ n ′ ⁢ ⁢ is ⁢ ⁢ even ⁢ ⁢ ⁢ number [ f ⁡ ( m + d x , n ′ - 1 2 ) + f ⁡ ( m - d x , n ′ + 1 2 ) ] / 2 , when ⁢ ⁢ n ′ ⁢ ⁢ is ⁢ ⁢ odd ⁢ ⁢ number , where n is an index representing a location of each pixel before interpolation, and n′ is an index representing a location of each pixel interpolated in a vertical direction.