Patent ID: 7142249
Filing Date: 2006-11-28
Classification: H04N

Abstract:
1. A method of interpolating a pixel from an intermediate line of a first field in a sequence of interlaced fields, comprising: selecting at least one first pixel to which a first image information value is allocated from an image line lying above the intermediate line in the first field, and at least one second pixel to which a second image information value is allocated from an image line lying below the intermediate line in the first field; selecting at least one third pixel to which a third image information value is allocated from an image line, the vertical position of which corresponds to the position of the image line of the pixel to be interpolated, from a second field; determining a limit provided by the first and second image information values; determining the position of the third image information value relative to the interval limits; mixing the image information values by multiplying the first image information value by a first weighting factor, the second image information value by a second weighting factor, and the third image information value by a third weighting factor, then adding the weighted image information values to obtain an image information value for the pixel of the intermediate line, where the value of the third weighting factor is a function of the mathematical distance of the third information value from the interval limits, and the weighting factors are selected such that the image information value of the pixel to be interpolated lies with the interval limits.