Patent ID: 7336315

Claim:
An apparatus for performing intra-field interpolation for a de-interlacer, comprising: an intra-region inter-pixel variation calculation unit receiving image data and calculating variations between pixels included in upper, lower, left and right regions on previous and next lines of a pixel to be interpolated; an inter-region pixel correlation calculation unit receiving the image data and calculating correlations between certain regions around the pixel to be interpolated; a direction determination unit determining a direction in which interpolation is to be performed using the variations between pixels and the correlations calculated by the intra-region inter-pixel variation calculation unit and inter-region pixel correlation calculation unit, respectively; an interpolation unit determining values of the pixel to be interpolated using pixel values in regions having a maximum correlation calculated by the inter-region pixel correlation calculation unit; and an output unit receiving interpolated values that are output from the interpolation unit in the direction determined by the direction determination unit, and outputting interpolated image data.