Patent ID: 8270491
Filing Date: 2012-09-18
Classification: G06T,H04N

Abstract:
1. Device for generating an interpolated frame from source frames temporarily surrounding it, comprising: a motion estimator for estimating a motion vector for at least one current pixel of the frame to interpolate from said source frames, a motion compensated interpolation device to generate a first motion compensated interpolated frame, the characteristics of the current pixel of the said first interpolated frame being determined from the characteristics of the pixels of the source frames determined by the motion vector estimated for the said current pixel, a linear interpolation device to generate a second interpolated frame by linear filtering between the pixels of same coordinates as the current pixel in the source frames, a mixer to mix, for each current pixel of the frame to interpolate, the characteristics of the pixels of same coordinates wherein said first and second frames interpolated in such a manner as to generate said interpolated frame, a mixing coefficient being assigned to each of said first and second interpolated frames for each current pixel, a calculation circuit for calculating, for each current pixel of the interpolated frame, a first frame difference value between the pixels of the source frames determined by the estimated motion vector for said current pixel and a second frame difference value between the pixels of same coordinates as the current pixel in the source frames, wherein the mixer determines the mixing coefficients, for each current pixel of the interpolated frame, according to the said first frame difference value and/or second frame difference value calculated for this pixel and/or the estimated motion vector, the mixing coefficient assigned to said second interpolated frame being equal to the ratio of the first frame difference value over the sum of the first and second frame difference values.