Patent ID: 6930729

Claim:
A deleting apparatus comprising: a detection unit for detecting a sawtooth wave component based on an area dispersion value and motion information in each frame in an input video signal; and a deleting unit for deleting the sawtooth wave component based on a direction detected from pixels of the sawtooth wave component detected by the detection unit, wherein the area dispersion value is obtained by the following equation: v ⁡ ( m , n ) = 1 9 ⁢ ∑ i = m - 1 i = m + 1 ⁢ ∑ j = n - 1 j = n + 1 ⁢ ( x ⁡ ( i , j ) - y ( m , n ) ) 2 where m and n are coordinates, x is a pixel value at the position (m,n), y is an average of nine pixel values centering around the position (m,n) and i and j are parameters indicating the position of a pixel surrounding the position (m,n).